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Dr. Hyeok Choi

Name

[Choi, Dr. Hyeok]
  • Associate Professor

Biography

Dr.Hyeok Choi is an Associate Professor of Civil Engineering at the University of Texas-Arlington (UT-Arlington). Before joining UT-Arlington in August 2009, Dr. Choi was an ORISE (Oak Ridge Institute for Science and Education) Research Fellow working at the National Risk Management Research Laboratory of US Environmental Protection Agency. In 2007, Dr. Choi received his Ph.D. from University of Cincinnati, Cincinnati, OH, USA in Environmental Engineering and he obtained his BS and MS degrees in Civil Engineering from Sungkyunkwan University, South Korea in 1998 and 2000. His research interests include i) Physical and Chemical Processes for Water and Wastewater Treatment, ii) In Situ Remediation of Contaminated Groundwater, Soil, and Sediment, iii) In Situ Sensing System for Environmental Monitoring, iv) Destruction of Emerging Chemicals of Concerns, and v) Green Synthesis and Environmental Applications and Implications of Nanomaterials. Dr. Choi has published more than 47 journal articles and 13 book chapters and delivered more than 33 keynote and seminar presentations and 142 conference presentations worldwide. Since he joined UT-Arlington, his research studies have been funded by National Science Foundation, National Institutes of Health, Department of Defense, US Geological Survey, and Texas Higher Educational Coordinating Board.

Professional Preparation

    • 2009 PostDoc in Environmental EngineeringUS Environmental Protection Agency
    • 2007 Ph.D. in Environmental EngineeringUniversity of Cincinnati
    • 2000 M.S. in Environmental EngineeringSungkyunkwan University
    • 1998 B.S. in Civil EngineeringSungkyunkwan University

Appointments

    • Sept 2015 to Present Associate Professor
      The University of Texas Arlington
    • Aug 2009 to Aug 2015 Assistant Professor
      University of Texas at Arlington
    • Jan 2007 to Jan 2009 Postdoctoral Fellow
      US Environmental Protection Agency
    • Jan 2002 to Jan 2007 Resarch Assistant
      University of Cincinnati
    • Jan 2000 to Jan 2001 Field Manager
      Woo-Zoo Construction Company
    • Jan 1998 to Jan 2000 Resarch Assistant
      Sungkyunkwan University

Memberships

  • Membership
    • Aug 2011 to Present Korean-American Scientists and Engineers Association (KSEA)
    • Aug 2010 to Present American Society of Civil Engineers (ASCE)
    • Aug 2006 to Present American Water Works Association
    • Aug 2006 to Present Association of Environmental Engineering and Science Professors
    • Aug 2006 to Present International Water Association
    • Aug 2006 to Present Water Environment Federation
    • Aug 2004 to Present American Chemical Society (ACS)

Awards and Honors

    • Aug  2014 Human Rights Coalition’s Student Essay Competition 2014. First place sponsored by American Association for the Advancement of Science (AAAS)
      Description:

      2014 American Association for the Advancement of Science (AAAS) Science and Human Rights Coalition’s Student Essay Competition 2014. First place (graduate student category) awarded to Mr. Wasiu Lawal.

    • Jul  2014 Travel Fund sponsored by American Chemical Society (ACS)
      Description:

      2014 American Chemical Society (ACS), Summer School on Green Chemistry and Sustainable Energy (on July 15-22, 2014 at the Colorado School of Mines), Full Scale Travel Fund to Mr. Wasiu Lawal.

    • Jun  2014 Travel Grant sponsored by Royal Society of Chemistry (RSC), Environment, Sustainability & Energy Division
      Description:

      2014 Royal Society of Chemistry (RSC), Environment, Sustainability & Energy Division, Travel Grant, to Mr. Wasiu Lawal.

    • Jun  2014 American Chemical Society (ACS) Green Chemistry Institute/National Science Foundation (NSF) Scholarship sponsored by American Chemical Society (ACS) Green Chemistry Institute/National Science Foundation (NSF)
      Description:

      2014 American Chemical Society (ACS) Green Chemistry Institute/National Science Foundation (NSF) Scholarship for the 18th Annual Green Chemistry & Green Engineering Conference (June 17-19, 2014, in North Bethesda, MD), to Mr. Wasiu Lawal.

    • Jul  2013 Excellent Paper Award sponsored by The 2013 International Environmental Engineering Conference-Korean Society of Environmental Engineers (KSEE)
      Description:

      2013 Excellent Paper Award, The 2013 International Environmental Engineering Conference-Korean Society of Environmental Engineers (KSEE), to Hyeok Choi

    • Sep  2012 International-Domestic Student Summit 2012 sponsored by American Chemical Society (ACS)
      Description:

      2012     American Chemical Society (ACS), International-Domestic Student Summit 2012, Student Travel Award to Mr. Abolfazl Zakersalehi and Mr. Wasiu Lawal.

    • Aug  2012 Student Paper Award (First Place) sponsored by International Conference on Environmental Science and Technology
      Description:

      International Conference on Environmental Science and Technology, Student Paper Award (First Place), to Mr. Prince Nfodzo.

    • Jul  2012 Young Korean-Ethic Scientists and Engineers Award sponsored by The Korean Federation of Science and Technology Societies (KOFST)
      Description:

      2012 Young Korean-Ethic Scientists and Engineers Award, The Korean Federation of Science and Technology Societies (KOFST), to Hyeok Choi

    • Jun  2012 Graduate Student Awards in Environmental Chemistry sponsored by American Chemical Society (ACS), Devision of Environmental Chemistry
      Description:

      2012     American Chemical Society (ACS), Division of Environmental Chemistry, Graduate Student Awards in Environmental Chemistry, to Mr. Prince Nfodzo.

    • May  2012 External Graduate Funding Institute (EGFI) Award sponsored by UT-Arlington, Office of Graduate Studies
      Description:

      2012     UT-Arlington, Office of Graduate Studies, External Graduate Funding Institute (EGFI) Award, to Mr. Wasiu Lawal for his effort to secure graduate funding from external grant programs.

    • May  2012 The Graduate Dean’s Dissertation Fellowship sponsored by UT-Arlington, Office of Graduate Studies
      Description:

      2012  UT-Arlington, Office of Graduate Studies, The Graduate Dean’s Dissertation Fellowship, to Mr. Prince Nfodzo for his Outstanding Ph.D. Dissertation.

    • Mar  2012 Outstanding CE Graduate Student Award sponsored by UT-Arlington, Civil Engineering
      Description:

      2012     UT-Arlington, Civil Engineering, Outstanding CE Graduate Student Award to Mr. Prince Nfodzo for his Research, Education, and Service Accomplishment .

    • Jan  2012 Environmental Nanotechnology Scholarship sponsored by UT-Arlington, Civil Engineering
      Description:

      2012  UT-Arlington, Civil Engineering, Environmental Nanotechnology Scholarship for Ph.D. Students to Mr. Hesam Zamankhan for his Research Accomplishment.

    • Jan  2012 Water Treatment Scholarship sponsored by UT-Arlington, Civil Engineering
      Description:

      2012     UT-Arlington, Civil Engineering, Water Treatment Scholarship for M.S. Students to Mr. Abolfazl Zakersalehi for his Research Accomplishment.

    • Sep  2011 Arthur R. Poor Graduate Civil Engineering Scholarship sponsored by UT-Arlington, Civil Engineering
      Description:

      2011     UT-Arlington, Civil Engineering, Arthur R. Poor Graduate Civil Engineering Scholarship (Construction Research Center Scholarship Committee), to Mr. Prince Nfodzo for his academic performance and outstanding research in civil engineering at UT-Arlington.

    • Mar  2011 Science Coaches Program Grant sponsored by American Chemical Society (ACS)
      Description:

      2011  American Chemical Society (ACS), Science Coaches Program, A grant was given to Mr. Wasiu Lawal to participate in the 2011-2012 Program in order to share his research experience with students/teachers (Mr. Blake Wade) in Kennedale High School, Kennedale, TX.

    • Jan  2011 Graduate Student Grant sponsored by U.S. Geological Survey (USGS)/Texas Water Resources Institute (TWRI)
      Description:

      2011  U.S. Geological Survey (USGS)/Texas Water Resources Institute (TWRI) Graduate Student Grant Program, to Mr. Prince Nfodzo under supervision of Prof. Hyeok Choi for his study on PCB cleanup in the Trinity River in North Texas.

    • Jul  2010 Scientific and Technological Achievement Award sponsored by US Environmental Protection Agency
      Description:

      2010  Scientific and Technological Achievement Award: Level III, US Environmental Protection Agency.

    • Sep  2009 Outstanding Reviewer Award sponsored by American Society of Civil Engineers (ASCE)
      Description:

      2009     Outstanding Reviewer for the Journal of Environmental Engineering, American Society of Civil Engineers.

    • Aug  2008 Technical for the Best Papers sponsored by American Chemical Society (ACS)
      Description:

      2008  ES&T (Environmental Science and Technology) Second Runner-Up Award – Technical for the Best Papers, given to Environmental Science and Technology 43 (2009) 488-493.

    • Jun  2008 Outstanding Doctoral Dissertation Award sponsored by CH2M Hill/AEESP (Association of Environmental Engineering and Science Professors)
      Description:

      2008  CH2M Hill/AEESP (Association of Environmental Engineering and Science Professors) Outstanding Doctoral Dissertation Award.

    • Aug  2007 Oak Ridge Institute for Science and Education (ORISE) Postdoctoral Research Fellowship sponsored by US Environmental Protection Agency
      Description:

      2007  Oak Ridge Institute for Science and Education (ORISE) Postdoctoral Research Fellowship (sponsored by US Environmental Protection Agency.

    • Jul  2007 Undergraduate Student Award in Environmental Chemistry sponsored by Division of Environmental Chemistry, American Chemical Society, USA
      Description:

      2007  Undergraduate Student Award in Environmental Chemistry, to Mr. Daniel Breetz who was supervised by Hyeok Choi for his research experience on plants-assisted synthesis of nanoparticles during 2004–2006, Division of Environmental Chemistry, American Chemical Society, USA.

    • Mar  2007 Scarpino Award for Best Doctoral Dissertation sponsored by Environmental Engineering and Science Faculty of University of Cincinnati
      Description:

      2007  Scarpino Award for Best Doctoral Dissertation, Environmental Engineering and Science Faculty of University of Cincinnati, USA.

    • Sep  2006 Certificate of Merit Award for First Paper Presentation sponsored by Division of Environmental Chemistry, American Chemical Society
      Description:

      2006  Certificate of Merit Award for First Paper Presentation, Division of Environmental Chemistry, American Chemical Society, USA.

    • Sep  2006 Advanced Degree/Continuing Education Scholarship sponsored by Ohio SectionAmerican Water Works Association
      Description:

      2006     Advanced Degree/Continuing Education Scholarship, Ohio Section-American Water Works Association, USA.

    • Jul  2006 University Dean’s Distinguished Dissertation Fellowship sponsored by University of Cincinnati Research Council
      Description:

      2006  University Dean’s Distinguished Dissertation Fellowship, University of Cincinnati Research Council, USA.

    • Jun  2006 Jacob D. and Lillian Rindsberg Award sponsored by Graduate Research and Studies of University of Cincinnati
      Description:

      2006  Jacob D. and Lillian Rindsberg Award, Graduate Research and Studies of University of Cincinnati.

    • May  2006 Graduate Student Research Paper Award sponsored by Division of Environmental Chemistry, American Chemical Society
      Description:

      2006  Graduate Student Research Paper Award, Division of Environmental Chemistry, American Chemical Society, USA.

    • May  2006 Graduate Student Award for Exemplary Scholarship sponsored by Graduate Student Governance Association of University of Cincinnati
      Description:

      2006  Graduate Student Award for Exemplary Scholarship, Graduate Student Governance Association of University of Cincinnati, USA.

    • Mar  2006 John David Eye Scholarship sponsored by Environmental Engineering and Science Faculty of University of Cincinnati
      Description:

      2006  John David Eye Scholarship, Environmental Engineering and Science Faculty of University of Cincinnati, USA.

    • Jul  2005 Second Place Research Presentation Award sponsored by National Science Foundation
      Description:

      2005  Second Place Research Presentation Award, to Ms. Anna C. Sofranko from University of Virginia, who was mentored by Hyeok Choi for her research experience on inorganic membrane for water treatment during 2005 National Science Foundation Summer Research Experiences for Undergraduates Program for Membrane Science and Technology.

    • Jul  2005 Summer Graduate Student Research Fellowship sponsored by University of Cincinnati Research Council
      Description:

      2005  Summer Graduate Student Research Fellowship, University of Cincinnati Research Council, USA.

    • Mar  2005 Graduate Student Award for Excellence in Graduate Studies sponsored by Division of Environmental Chemistry, American Chemical Society
      Description:

      2005  Graduate Student Award for Excellence in Graduate Studies, Division of Environmental Chemistry, American Chemical Society, USA.

    • Jul  2004 Summer Graduate Student Research Fellowship sponsored by University of Cincinnati Research Council
      Description:

      2004  Summer Graduate Student Research Fellowship, University of Cincinnati Research Council, USA.

    • Jan  2004 Richard C. Wigger Scholarship sponsored by Environmental Engineering and Science Faculty of University of Cincinnati
      Description:

      2004  Richard C. Wigger Scholarship, Environmental Engineering and Science Faculty of University of Cincinnati, USA.

    • Jul  2003 Summer Graduate Student Research Fellowship sponsored by University of Cincinnati Research Council
      Description:

      2003  Summer Graduate Student Research Fellowship, University of Cincinnati Research Council, USA.

    • Sep  2002 University Graduate Scholarship sponsored by University of Cincinnati
      Description:

      2002  University Graduate Scholarship (2002-2007), University of Cincinnati, USA.

    • Mar  1999 Graduate Student Scholarship sponsored by Sungkyunkwan University
      Description:

      1999     Graduate Student Scholarship (1999-2000), Sungkyunkwan University, Korea.

    • Aug  1998 Graduate Student Teaching Assistantship sponsored by Sungkyunkwan University
      Description:

      1998  Graduate Student Teaching Assistantship (1998-1999), Sungkyunkwan University, Korea.

    • Aug  1996 Undergraduate Student Scholarship sponsored by Sungkyunkwan University
      Description:

      1996  Undergraduate Student Scholarship, Sungkyunkwan University, Korea.

News Articles

    • Aug 2014 News Highlights

      Nate Seltenrich, Keeping Tabs on HABs: New Tools for Detecting, Monitoring, and Preventing Harmful Algal Blooms, News Focus in Environmental Health Perspectives (Official NIEHS Publication) 122 (2014) A206-A213 (The news partly highlights my work on biological toxin monitoring supported by NIH and NSF).

    • Apr 2013 Star-Telegram

      Patrick M. Walker, UT Arlington environmental engineer wins federal grant to identify algae blooms in water sources, News in Star-Telegram, April 1, 2013

    • Nov 2009 Environmental News

      Naomi Lubick, Cap and degrade: a reactive nanomaterial barrier also serves as a cleanup tool, Environmental News in Environmental Science and Technology43 (2009) 235 (The article highlights our work published in Environmental Science and Technology 43 (2009) 488-493 and discussion with leading researchers in the research area.

    • Feb 2009 Environmental News

      Kellyn Betts, Top papers in environmental technology, second runner-up: Stars align for PCB cleanup technology, Environmental News in Environmental Science and Technology43 (2009) 2201 (The article introduces our work published in Environmental Science and Technology 43 (2009) 488-493, which was selected Second Runner-Up Award – Technical for the Best Papers in 2008

    • Mar 2006 Inside Cover Page of a Journal Issue

      Hyeok Choi, Anna C. Sofranko, and Dionysios D. Dionysiou, Nanocrystalline TiO2 photocatalytic membranes with a hierarchical mesoporous multilayer: Synthesis, characterization, and multifunction, Inside Cover Page of a Journal Issue, Advanced Functional Materials16 (2006) 2

Research and Expertise

  • Area of Expertise

    Physical and Chemical Processes for Water and Wastewater Treatment: Advanced Oxidation Technologies, Photocatalysis, Sorption, Membrane Separation

    In Situ Remediation of Contaminated Groundwater, Soil and Sediment

    In Situ Sensing System for Monitoring and Evaluating Contaminated Sites

    Destruction of Emerging Chemicals of Concern in the Environment: PCBs, PPCPs, Fire Retardants, Biological Toxins

    Green Synthesis and Environmental Applications and Implications of Nanostructured Functional Materials

Publications

      Book Chapter Forthcoming
      • Changseok Han, Endalkachew Sahle-Demessie, Afzal Shah, Saima Nawaz, Latif-ur-Rahman, Niall B. McGuinness, Suresh C. Pillai, Hyeok Choi, Dionysios D. Dionysiou, Mallikarjuna N. Nadagouda, Catalysis for Environmental Applications, in: Sustainable Catalysis: Energy efficient reactions and Applications (Ed. Lam and R. Luque), Wiley VCH, (Invited and Submitted).

        {Book Chapter} [Refereed/Juried]

      Conference Paper Forthcoming
      • W. Lawal, H. Choi, Decomposition of Perfluoroalkyl Compounds via Nanoscale Zerovalent Iron Mediated Advanced Oxidation (Oral Presentation) at Special Symposium on UV, AOP, and Ozone, Water Quality Technology Conference and Exposition (WQTCE), November 13-17, 2016, Indianapolis, IN, USA.

        {Conference Paper} [Refereed/Juried]

      Conference Proceeding Forthcoming
      • Burhanuddin Khuzema Zaveri, Mohammad Reza Eskandarian, Mostafa Fazli, Mohammad Hossein Rasoulifard, Hyeok Choi, Photolytic and Photocatalytic Decomposition of Pharmaceuticals in Water by Ultraviolet Light-Emitting Diode, (Oral Presentation) in: Proceedings of the 8th International Conference on Environmental Science and Technology, June 6-10, 2016, Houston, TX, in: Environmental Science and Technology, American Science Press, Houston, USA, 2016 (Accepted for Publication).

        {Conference Proceeding} [Refereed/Juried]
      Forthcoming
      • Hesam Zamankhan, Hyeok Choi, In-Situ Decomposition of Biological Toxins on Nitrogen-Doped Nanostructured TiO2 Films Under Solar Radiation, (Oral Presentation) in: Proceedings of the 8th International Conference on Environmental Science and Technology, June 6-10, 2016, Houston, TX, in: Environmental Science and Technology (Eds. ??), American Science Press, Houston, USA, 2016 (Accepted for Publication).

        {Conference Proceeding} [Refereed/Juried]

      Journal Article Forthcoming
      • Abolfazl Zakersalehi, Mallikarjuna Nadagouda, Hyeok Choi, Understanding of Size Exclusion Mechanism onto Porous TiO2: NOM and Target Chemicals (Submitted for Publication in Water Science and Technology: Water Supply).

        {Journal Article} [Refereed/Juried]
      Forthcoming
      • Siyang Wu, Hyeok Choi, Interpreting Unique Colloidal Response of TiO2 Nanomaterials to Controlled Sonication for Understanding their Assembly Configuration (Submitted for Publication in Water Science and Technology: Water Supply).

        {Journal Article} [Refereed/Juried]
      Forthcoming
      • Hesam Zamankhan, Steven Ruberg, Richard P. Stumpf, Mike Twardowski, James Sullivan, Timothy Moore, Hyeok Choi, Comparison of Various Observing Systems for Monitoring Harmful Algal Blooms: A Case Study on Western Lake Erie (Submitted for Publication in Environmental Science: Processes and Impacts).

        {Journal Article} [Refereed/Juried]
      Forthcoming
      • Changseok Han, Miguel Pelaez, Doris Betancourt, Hyeok Choi, Dionysios D. Dionysiou, Bellina Veronesi, Linking the Physicochemical Properties of Titania with its Biocidal Properties (Submitted for Publication in Nanofact).

        {Journal Article} [Refereed/Juried]
      Forthcoming
      • Mohammad Reza Eskandarian, Hyeok Choi, Mostafa Fazli, Mohammad Hossein Rasoulifard, Effect of UV-LED Wavelengths on Direct Photolytic and TiO2 Photocatalytic Degradation of Emerging Contaminants in Water (Accepted for Publication in Chemical Engineering Journal).

        {Journal Article} [Refereed/Juried]

      Book Chapter 2016
      • Maria Antoniou, Cen Zhao, Kevin E. O’Shea, Geshan Zhang, Dionysios D. Dionysiou, Chun Zhao, Changseok Han, Mallikarjuna N. Nadagouda, Hyeok Choi, Theodora Fotiou, Theodoros Triantis, Anastasia Hiskia, Photocatalytic Degradation of Organic Contaminants in Water: Process Optimization and Degradation Pathways, pp. 1–34, in: RSC Energy and Environment Series No. 15, Photocatalysis: Applications (Eds. Dionysios D. Dionysiou, Gianluca Li Puma, Jinhua Ye, Jenny Schneider, Detlef Bahnemann), Royal Society of Chemistry, UK, 2016.

        {Book Chapter} [Refereed/Juried]
      2016
      • Changseok Han, Bangxing Ren, Mallikarjuna N. Nadagouda, George Em. Romanos, Polycarpos Falaras, Teik Thye Lim, Virender K. Sharma, Natalie Johnson, Pilar Fernández-Ibanez, J. Anthony Byrne, Hyeok Choi, Rachel Fagan, Declan E. McCormack, Suresh C. Pillai, Cen Zhao, Kevin O’Shea, Dionysios D. Dionysiou, Nanotechnology Applications, pp. 105–143, in: Water Sustainability Handbook, Volume II: Technology (Ed. Daniel Chen), Taylor and Francis/CRC Press, Boca Raton, FL, 2016.

        {Book Chapter} [Refereed/Juried]
      2016
      • Hesam Zamankhan, Judy Westrick, Frank Anscombe, Richard Stumpf, Timothy T. Wynne, Mike Twardowski, James Sullivan, Timothy Moore, Hyeok Choi, Sustainable Monitoring of Algal Blooms, pp. 61–86, in: Water Sustainability Handbook, Volume I: Management (Ed. Daniel Chen), Taylor and Francis/CRC Press, Boca Raton, FL, 2016.

        {Book Chapter} [Refereed/Juried]

      Journal Article 2016
      • Mohammad Reza Eskandarial, Mostafa Fazli, Mohammad Hossein Rasoulifard, Hyeok Choi, Decomposition of Organic Chemicals by Zeolite-TiO2 Nanocomposite Supported onto LDPE Film under UV-LED Powered by Solar Radiation. Applied Catalysis B: Environment 183 (2016) 407-416.

        {Journal Article} [Refereed/Juried]
      2016
      • Celyna K. O. da Silva, Wasiu A. Lawal, Price A. Nfodzo, Marilda, M. G. R. Vianna, Claudio A. O. do Nascimento, Hyeok Choi, Degradation of PFOA by Hydrogen Peroxide and Persulfate Activated by Iron-Modified Diatomite. Applied Catalysis B: Environment 192 (2016) 253-259.

        {Journal Article} [Refereed/Juried]

      Conference Paper 2015
      • H. Zamankhan, S. Jung, S. Y. Cho, J. M. Park, H. Choi, Comparison between Various Observing Systems for Monitoring Harmful Algal Blooms and Preliminary Concept of Innovative Sensing Network for In-Situ Monitoring of Biological Toxins (Oral Presentation), at Special Symposium on Advances in Sensing Technologies for Real-Time and Remote Monitoring of Water Quality, The 250th ACS National Meeting and Exposition, August 16-20, 2015, Boston, MA.

        {Conference Paper} [Refereed/Juried]
      2015
      • H. Zamankhan, H. Choi, Monitoring of Biological Toxins in Harmful Algal Blooms: From Current Approaches to Future Strategies (Oral Presentation) at Special Symposium on Development of Nanodevices and Nanotechnologies for Environmental Monitoring and Remediation, The International Chemical Congress of Pacific Basin Societies (PACIFICHEM), December 15-20, 2015, Honolulu, HW, USA.

        {Conference Paper} [Refereed/Juried]

      Journal Article 2015
      • Hyeok Choi, Wasiu Lawal, Souhail R. Al-Abed, Desorption, Partitioning, and Dechlorination Characteristics of PCBs in Waukegan Harbor Sediment under Remediation with Reactive Activated Carbon. Journal of Hazardous Materials 287 (2015) 118-125.

        {Journal Article} [Refereed/Juried]

      Poster Abstract 2015
      • H. Zamankhan, S. Jung, S.-Y. Cho, J.-M. Park, H. Choi, Monitoring Harmful Algal Blooms: Current Observing Efforts and Future Needs (Poster Presentation), NSF Workshop on Cyonobacterial Blooms, April 13-14, 2015, Bowling Green, OH, USA.

        {Poster Abstract} [Refereed/Juried]
      2015
      • M. Eskandarian, M. Fazli, M. Rasoulifard, H. Choi, Photolytic and Photocatalytic Decomposition of Pharmaceuticals in Water: Introduction of UV-LEDs and Impact of Wavelengths (Poster Presentation), at Special Symposium on New Challenges in Water Quality, Treatment, Reuse and Sustainability: Chemistry and Application of Advanced Oxidation Processes for Removal of Contaminants of Concern and Transformation Products, The 250th ACS National Meeting and Exposition, August 16-20, 2015, Boston, MA.

        {Poster Abstract} [Refereed/Juried]
      2015
      • W. Lawal, H. Choi, Decomposition of Perfluorooctanoic Acid by Palladium Doped Nanoscale Iron Conjugated with Persulfate and Peroxymonosulfate (Poster Presentation), at Special Symposium on New Challenges in Water Quality, Treatment, Reuse and Sustainability: Chemistry and Application of Advanced Oxidation Processes for Removal of Contaminants of Concern and Transformation Products, The 250th ACS National Meeting and Exposition, August 16-20, 2015, Boston, MA.

        {Poster Abstract} [Refereed/Juried]
      2015
      • H. Zamankhan, A. Zakersalehi, M. Eskandarian, H. Choi, Photolytic and Photocatalytic Degradation of Microcystins: From Photochecmial Approaches To Engineering Considerations (Poster Presentation) at Special Symposium on UV Photochemistry for Water: Implications for Safe Water Disinfection and Oxidation Treatment Applications, The International Chemical Congress of Pacific Basin Societies (PACIFICHEM), December 15-20, 2015, Honolulu, HW, USA.

        {Poster Abstract} [Refereed/Juried]

      Book Chapter 2014
      • Changseok Han, Hyeok Choi, Dionysios D. Dionysiou, Green Chemistry for Environmental Remediation, pp: 148-166, in: An Introduction to Green Chemistry Method(Eds. Rafael Ruque, Juan Carlos Comenares), Future Science Group, London UK, 2014.

        {Book Chapter} [Refereed/Juried]
      2014
      • Hyeok Choi, Abolfazl Zakersalehi, Souhail R. Al-Abed, Changseok Han, and Dionysios D. Dionysiou, Nanostructured titanium oxide films and membranes-based photocatalysis for water treatment, pp. 123–132, in: Nanotechnology Applications for Clean Water (Eds. Nora Savage, Mamadou Diallo, Jeremiah Duncan, Anita Street, and Richard Sustich, ISBN: 978-0-8155-578-4), William Andrew Publishing, Norwich, NY, 2014 (2nd Edition).

        {Book Chapter} [Refereed/Juried]

      Conference Paper 2014
      • Abolfazl Zakersalehi and Hyeok Choi, How We Enhance the Photocatalytic Decomposition of Target Water Contaminants?: A Simple Size Exclusion of Natural Organic Matter, (Oral Presentation) at Special Symposium On Advances in Materials for Water and Energy, The 247thAmerican Chemical Society (ACS) National Meeting, March 16-20, 2014, Dallas, TX.

        {Conference Paper} [Refereed/Juried]
      2014
      • Wasiu Lawal and Hyeok Choi, Integrated Decomposition of Perfluorooctanoic Acid by Palladium Doped Nanoscale Iron and Common Oxidants, (Oral Presentation) at Special Symposium On Nanotechnology for Sustainable Resources and Environmental Science, The 247thAmerican Chemical Society (ACS) National Meeting, March 16-20, 2014, Dallas, TX.

        {Conference Paper} [Refereed/Juried]
      2014
      • B. Veronesi, C. Han, M. Pelaez, H. Zamankhan, H. Choi, L. Putvin, D. Betancourt, D. D. Dionysiou, Linking the Physicochemistry of Titania with its Biocidal Properties, (Oral Presentation) atThe 53th Society of Toxicology (SOT) National Meeting, Mar. 23-27, 2014, Phoenix, AZ.

        {Conference Paper} [Refereed/Juried]
      2014
      • H. Zamankhan, S. Jung, S. Cho, J. Park, H. Choi, In Situ Sensing System for the Selective and Sensitive Detection of Biological Toxins in HABs, (Oral Presentation) at The 2014 Oceans and Human Health Grantee Conference, Mar. 27-28, 2014, La Jolla, CA (Invited).

        {Conference Paper} [Refereed/Juried]
      2014
      • Wasiu Lawal, Hyeok  Choi, Integrated Decomposition of Perfluorooctanoic Acid by Palladium Doped Nanoscale Zerovalent Iron and Common Oxidants, (Oral Presentation) at Special Symposium on New Advances in the Chemistry and Application of Advanced Oxidation Processes for Removal of Contaminants of Emerging Concern, The 248th American Chemical Society (ACS) National Meeting, August 10-14, 2014, San Francisco, CA.

        {Conference Paper} [Refereed/Juried]

      Journal Article 2014
      • Jurate Virkutyte, Souhail R. Al-Abed, Hyeok Choi, Christina Bennett-Stamper, Distinct Structural Behavior and Transport of TiO2 Nano- and Nanostructured Particles in Sand. Colloids and Surfaces A: Physicochemical and Engineering Aspects 443 (2014) 188-194.

        {Journal Article} [Refereed/Juried]

      Poster Abstract 2014
      • C.K.O. Silva, M.M.G.R. Vianna, C.A.O. Nascimento, H. Choi, Application of Modified Diatomite for the Activation of Persulfate to Decompose PFOA, (Poster Presentation) Texas Water 2014, April 14-17, 2014, Dallas, TX, TX.

        {Poster Abstract} [Refereed/Juried]
      2014
      • H. Zamankhan, S. Jung, and H. Choi, In Situ Monitoring of Biological Toxins in Harmful Algal Blooms: Sensing Network Demonstration, (Poster Presentation) Texas Water 2014, April 14-17, 2014, Dallas, TX, TX.

        {Poster Abstract} [Refereed/Juried]
      2014
      • Hesam Zamankhan, Sungyong Jung, and Hyeok Choi, In Situ Monitoring of Microcystins for the Evaluation of Harmful Algal Blooms, (Poster Presentation) at Real-Time Water Monitoring of Surface Waters for Drinking Water Supplies, The 247th American Chemical Society (ACS) National Meeting, March 16-20, 2014, Dallas, TX.

        {Poster Abstract} [Refereed/Juried]
      2014
      • C.K.O. Silva, M.M.G.R. Vianna, C.A.O. Nascimento, H. Choi, PFOA Decomposition by Persulfate with Modified Diatomite, (Poster Presentation) at Emerging Micro-Pollutants in the Environment, The 247th American Chemical Society (ACS) National Meeting, March 16-20, 2014, Dallas, TX .

        {Poster Abstract} [Refereed/Juried]
      2014
      • Hesam Zamankhan, Sunyong Jung, Hyeok Choi, Innovative Sensing Network for In Situ Monitoring of Biological Toxins and Harmful Algal Blooms (Poster Presentation) at 2014 Annual Celebration of Excellence by Students Research Symposium, March 26, 2014, UT-Arlington, Arlington, TX.

        {Poster Abstract} [Refereed/Juried]
      2014
      • Wasiu Lawal, Hyeok Choi, Integrated Decomposition of Perfluorooctanoic Acid by Palladium Doped Nanoscale Zerovalent Iron and Persulfate (Poster Presentation) at 2014 Annual Celebration of Excellence by Students Research Symposium, March 26, 2014, UT-Arlington, Arlington, TX.

        {Poster Abstract} [Refereed/Juried]
      2014
      • H. Zamankhan, S. Jung, H. Choi, Comparison and Correlation of Current Federal Observing Systems for Monitoring Harmful Algal Blooms: A Case Study on Lake Erie, (Poster Presentation) at The 2014 Oceans and Human Health Grantee Conference, Mar. 27-28, 2014, La Jolla, CA.

        {Poster Abstract} [Refereed/Juried]
      2014
      • Wasiu Lawal, Hyeok  Choi, Energy Efficient Process for the Decomposition of Polyfluorinated Compounds Using Palladium Doped Nanoscale Zerovalent Iron and Common Oxidants, (Poster Presentation), The 18th Annual Green Chemistry and Engineering Conference of American Chemical Society, June 17-19, 2014, North Bethesda, MD.

        {Poster Abstract} [Refereed/Juried]
      2014
      • Celyna K.O. Silva, Wasiu Lawal, Marilda M.G.R. Vianna, Claudio A.O. Nascimento, Hyeok  Choi, Decomposition of PFOA by Hydrogen Peroxide Catalysed by Modified Diatomite, (Poster Presentation) at General Poster Session on Catalysis Science and Technology, The 248th American Chemical Society (ACS) National Meeting, August 10-14, 2014, San Francisco, CA.

        {Poster Abstract} [Refereed/Juried]
      2014
      • B. Veronesi, C. Han, M. Pelaez, H. Choi, D. Betancourt, D. Dionysiou, Liking the Physicochemical Properties of Modified Titania with its Biocidal Properties, (Poster Presentation) at Special Symposium on Assessing the Implications of Nanotechnology, The 248th American Chemical Society (ACS) National Meeting, August 10-14, 2014, San Francisco, CA.

        {Poster Abstract} [Refereed/Juried]

      Book Chapter 2013
      • Abolfazl Zakersalehi, Joel Anderson, Hyeok Choi, and Dionysios D. Dionysiou, Photocatalytic Ceramic Membranes, pp. 963-983, in: Encyclopedia of Membrane Science and Technology, Volume 2: Methods of Membrane Preparation and Characterization and Design of Membrane Modules(Eds. E. Hoek, V. Tarabara), John Wiley & Sons, Hoboken, NJ, 2013.

        {Book Chapter} [Refereed/Juried]
      2013
      • Hyeok Choi, Prince Nfodzo, Souhail R. Al-Abed, Shirish Agarwal, Dionysios D. Dionysiou, Activated Carbon-Supported Palladized Iron Nanoparticles: Applications to Contaminated Site Remediation, pp. 231-258, in: Nanotechnology for Water and Wastewater Treatment(Eds. P. Lens, J. Virkutyte, V. Jegatheesan, Seung Hyun Kim, S. Al-Abed, ISBN: 9781780404585), International Water Association, United Kingdom, 2013.

        {Book Chapter} [Refereed/Juried]
      2013
      • Changseok Han, Joel Andersen, Suresh C. Pillai, Rachel Fagan,  Polycarpos Falaras, Anthony Byrne, Patrick S.M. Dunlop, Hyeok Choi, Wenjun Jiang, Kevin O’Shea, and Dionysios D. Dionysiou, Green Nanotechnology: Development of Nanomaterials for Environmental and Energy Applications, pp. 201-229, in: Sustainable Nanotechnology and the Environment: Advances and Achievements(Ed. Virender Sharma and Najm Shamin), American Chemical Society, Washington, DC, 2013.

        {Book Chapter} [Refereed/Juried]
      2013
      • Changseok Han, Miguel Pelaez, Mallikarjuna Nadagouda, Sherine Obare, Ploycarpos Falaras, Patrick Dunlop, Anthony Byrne, Hyeok Choi, Dionysios D. Dionysiou, The Green Synthesis and Environmental Applications of Nanomaterials, pp. 106-143, in: Sustainable Preparation of Metal Nanoparticles: Methods and Applications(Eds. Rafael Luque and Rajenda Varma), RSC Green Chemistry No. 9, Royal Society of Chemistry, UK, 2013.

        {Book Chapter} [Refereed/Juried]
      2013
      • Miguel Pelaez, Changseok Han, Hyeok Choi, Virender Sharma, Anthony Byrne, Patrick Dunlop, George Romanos, Polycarpos Falaras, Dionysios Dionysiou, Nanotechnology: Environmental Applications, pp. 1712-1726, in: Encyclopedia of Environmetrics Second Edition(Eds. Abdel H. El-Shaarawi and Walter W. Piegorsch), John Wiley & Sons, Chickester, UK, 2013.

        {Book Chapter} [Refereed/Juried]
      2013
      • Prince Nfodzo, Dionysios D. Dionysiou, Hyeok Choi, Water Supply and Treatment, pp. 1712-1726, in: Encyclopedia of Environmetrics Second Edition (Eds. Abdel H. El-Shaarawi and Walter W. Piegorsch), John Wiley & Sons, Chichester, UK, 2013.

        {Book Chapter} [Refereed/Juried]

      Conference Paper 2013
      • Abolfazl Zakersalehi and Hyeok Choi, Size Exclusion of Different NOM Fractions for Enhancing the Oxidation of Target Contaminants on Engineered TiO2, (Oral Presentation) at Special Symposium On Chemistry and Applications of Advanced Oxidation Processes for Removal of Contaminants of Emerging Concern, The 245thAmerican Chemical Society (ACS) National Meeting, April 7-11, 2013, New Orleans, LA.

        {Conference Paper} [Refereed/Juried]
      2013
      • Abolfazl Zakersalehi, Mallikarjuna Nadagouda, and Hyeok Choi, Controlling Porous Structure of TiO2 Photocatalysts for Preferential Decomposition of Ibuprofen, (Oral Presentation) atThe 46thAmerican Chemical Society (ACS) Dallas-Fort Worth Meeting in Miniature (MiM), April 27, 2013, Commerce, TX.

        {Conference Paper} [Refereed/Juried]
      2013
      • Abolfazl Zakersalehi and Hyeok Choi, Restraining the Physical Access of NOM into Nanostructured TiO2 Photocatalysts for Enhancing the Decomposition of Target Water Contaminants, (Oral Presentation) at Special Symposium On Heterogeneous Catalysis for Environmental and Energy Applications, The 246thAmerican Chemical Society (ACS) National Meeting, Sept. 8-12, 2013, Indianapolis, IN.

        {Conference Paper} [Refereed/Juried]

      Conference Proceeding 2013
      • Abolfazl Zakersalehi, Mallikarjuna Nadagouda, Hyeok Choi, Inhibiting NOM access to porous TiO2 for enhancing decomposition of target water contaminants, (Oral Presentation) in: Extended Abstracts of the 2013 International Environmental Engineering Conference, June 11-13, 2013, Seoul, South Korea

        {Conference Proceeding} [Refereed/Juried]

      Journal Article 2013
      • Cecile Raillard, Valerie Hequet, Bifen Gao, Heyok Choi, Dionysios D. Dionysiou, Arnaud Marvilliers, Bertrand Illien, Correlations between Molecular Descriptors from Various Volatile Organic Compounds and Photocatalytic Oxidation Kinetic Constants. International Journal of Chemical Reactor Engineering 11 (2013) 799-813.

        {Journal Article} [Refereed/Juried]
      2013
      • Abolfazl Zakersalehi, Mallikarjuna Nadagouda, Hyeok Choi, Suppressing NOM Access to Controlled Porous TiO2 Particles Enhances the Decomposition of Target Water Contaminants. Catalysis Communications 41 (2013) 79-82.

        {Journal Article} [Refereed/Juried]

      Lecture/Speech 2013
      • Hyeok Choi, Nanotechnology in Environmental Engineering: Case Studies on Innovative Materials Development and Environmental Contaminant Cleanup (Seminar Presentation), in Environmental Engineering, Kangneung-Wonju National University, May 20-21, 2013, Gangneung, South Korea.

        {Lecture/Speech} [Non-refereed/non-juried]
      2013
      • Hyeok Choi, Nanotechnology in Environmental Engineering: Case Studies on Innovative Materials Development and Environmental Contaminant Cleanup (Seminar Presentation), in Environmental Engineering, Pusan National University, May 23, 2013, Pusan, South Korea.

        {Lecture/Speech} [Non-refereed/non-juried]
      2013
      • Hyeok Choi, From Sustainable Water Treatment to Reliable Quality Monitoring (Invited Lecture) in: Water and Energy Workshop at the 2013 International Environmental Engineering Conference, June 11, 2013, Seoul, South Korea.

        {Lecture/Speech} [Refereed/Juried]
      2013
      • Abolfazl Zakersalehi, Mallikarjuna Nadagouda, Hyeok Choi, Selectivity Enhancement of TiO2–Based AOTs: NOM vs. Target Contaminants in Water (Invited Lecture) at The 19th International Conference on Advanced Oxidation Technologies for Water, Air and Soil, November 17-21, 2013, San Diego, CA, USA.

        {Lecture/Speech} [Refereed/Juried]

      Poster Abstract 2013
      • Wasiu Lawal, Hyeok Choi, Selective Oxidation of Target Contaminants on Engineered Porous TiO2 Photocatalysts: Size Exclusion of NOM (Poster Presentation) at 2013 Annual Celebration of Excellence by Students Research Symposium, March 27, 2013, UT-Arlington, Arlington, TX.

        {Poster Abstract} [Non-refereed/non-juried]
      2013
      • Prince Nfodzo and Hyeok Choi, Comparison between Sulfate Radicals and Hydroxyl Radicals for the Decomposition of Pharmaceuticals and Personal Care Products, (Poster Presentation) at Special Symposium On Occurrence, Detection, and Removal of Pharmaceutical and Personal Care Productsin Potable Water Sources, The 245thAmerican Chemical Society (ACS) National Meeting, April 7-11, 2013, New Orleans, LA.

        {Poster Abstract} [Refereed/Juried]
      2013
      • Wasiu Lawal and Hyeok Choi, Integrated Decomposition of Perfluorooctanoic Acid by Nanoscale Zerovalent Iron Activated Oxidation (Poster Presentation) at The 246thAmerican Chemical Society (ACS) National Meeting, Sept. 8-12, 2013, Indianapolis, IN.

        {Poster Abstract} [Refereed/Juried]
      2013
      • Hesam Zamankhan and Hyeok Choi, Aggregation and Segregation Behavior of TiO2 Particles under Controlled Sonication (Poster Presentation) at The 246thAmerican Chemical Society (ACS) National Meeting, Sept. 8-12, 2013, Indianapolis, IN.

        {Poster Abstract} [Refereed/Juried]
      2013
      • Hesam Zamankhan, Sungyong Jung, and Hyeok Choi, In Situ Monitoring Microcystins for the Evaluation of Harmful Algal Blooms, (Poster Presentation) at Real-Time Water Monitoring of Surface Waters for Drinking Water Supplies, The 247thAmerican Chemical Society (ACS) National Meeting, March 16-20, 2014, Dallas, TX.

        {Poster Abstract} [Refereed/Juried]

      Conference Paper 2012
      • Prince Nfodzo and Hyeok Choi, Sulfate Radicals-Based Degradation of Triclosan, (Oral Presentation) at Special Symposium in Honor of Professor Paul Bishop, Division of Environmental Chemistry, The 244thAmerican Chemical Society (ACS) National Meeting, August 19-23, 2012, Philadelphia, PA.
        {Conference Paper} [Refereed/Juried]
      2012
      • C. Raillard, V. Hequet, B. Gao, H. Choi, D. D. Dionysiou, and B. Illien, Correlations Between Molecular Descriptors from Various VOCs and Photocatalytic Oxidation Kinetic Constants, (Oral Presentation) at the 7th European Meeting on Solar Chemistry and Photocatalysis: Environmental Applications-SPEA7, June 17-20, 2012, Oporto, Portugal.
        {Conference Paper} [Refereed/Juried]
      2012
      • Abolfazl Zakersalehi, Dionysios Dionysiou, and Hyeok Choi, Beneficial Effects of Controlled Porous Structure of TiO2 Photocatalysts for Environmental Applications (Oral Presentation),The First International Conference on Photocatalysis and Solar Energy Conversion: Development of Materials and Nanomaterials, May 29-31, 2012, Daejeon, South Korea (Invited).
        {Conference Paper} [Refereed/Juried]
      2012
      • Prince Nfodzo and Hyeok Choi, Sulfate Radicals-Based Advanced Oxidation Technologies for the Decomposition of Triclosan, (Oral Presentation) Texas Water 2012, April 10-13, 2012, San Antonio, TX.
        {Conference Paper} [Refereed/Juried]
      2012
      • Prince Nfodzo, Hyeok Choi, Reaction Intermediates and Pathways of Triclosan Decomposition by Sulfate Radicals, (Oral Presentation) at Symposium on Emerging Environmental Contaminants: Chemistry and Toxicology, Division of Environmental Chemistry, The 243rdAmerican Chemical Society (ACS) National Meeting, March 25-29, 2012, San Diego, CA.
        {Conference Paper} [Refereed/Juried]

      Conference Proceeding 2012
      • Wasiu Lawal, Hyeok Choi, Reductive/Oxidative Decomposition of Perfluorooctane Sulfonate Using nZVI Conjugated With Oxidants, (Oral Presentation) in: Proceedings of the 6th International Conference on Environmental Science and Technology, July 12-16, 2012, Houston, TX
        {Conference Proceeding} [Refereed/Juried]
      2012
      • Prince Nfodzo, Hyeok Choi, Sulfate Radical-Based Advanced Oxidation Technologies for the Decomposition of Triclosan, (Oral Presentation) in: Proceedings of the 6th International Conference on Environmental Science and Technology, July 12-16, 2012, Houston, TX
        {Conference Proceeding} [Refereed/Juried]
      2012
      • Abolfazl Zakersalehi, Hyeok Choi, Enhancing Selective Oxidation of TiO2 Photocatalysts for Decomposition of Target Pollutants, (Poster Presentation) in: Proceedings of the 6th International Conference on Environmental Science and Technology, July 12-16, 2012, Houston, TX
        {Conference Proceeding} [Refereed/Juried]

      Journal Article 2012
      • Christopher M. Hessler, Mau-Yi Wu, Zheng Xue, Hyeok Choi, Youngwoo Seo, The Influence of Capsular Extracellular Polymeric Substances on the Toxicological Interaction Between TiO2 Nanoparticles and Planktonic Bacteria Water Research 46 (2012) 4687-4696.
        {Journal Article} [Refereed/Juried]
      2012
      • Prince Nfodzo, Qinhong Hu, Hyeok Choi, Impacts of pH-Dependent Metal Speciation on the Decomposition of Triclosan by Sulfate Radicals. Water Science and Technology: Water Supply 12 (2012) 837-843.
        {Journal Article} [Refereed/Juried]
      2012
      • Hyeok Choi, Prince Nfodzo, Wasiu Lawal, Souhail R. Al-Abed, Young-Woo Seo, Phenomenological and Spectroscopic Analysis on the Effects of Sediment Ageing and Organic Carbon on the Fate of a PCB Congener Spiked to Sediment Journal of Hazardous Materials 239 (2012) 325-332.
        {Journal Article} [Refereed/Juried]

      Lecture/Speech 2012
      • Hyeok Choi, Nanotechnologies for Environmental Applications (Invited Lecture) at The 2012 Korean-ethic Scientists and Engineers Academic Conference (KSEAC 2012), July 4-6, 2012, Seoul, South Korea.

        {Exhibition Catalog} [Refereed/Juried]
      2012
      • Prince Nfodzo, Hyeok Choi, Effectiveness of Sulfate Radicals. (Invited Lecture) at The 18th International Conference on Advanced Oxidation Technologies for Treatment of Water, Air, and Soil, November 12-15, 2012, Jacksonville, FL.

        {Lecture/Speech} [Refereed/Juried]

      Poster Abstract 2012
      • Abolfazl Zakersalehi, Hyeok Choi, Selective Oxidation on Controlled Porous TiO2 Photocatalysts: Micro-Target Compound vs. Macro-NOM. (Poster Presentation) at The 17th Semiconductor Photocatalysis and Solar Energy Conversion, November 12-15, 2012, Jacksonville, FL.
        {Poster Abstract} [Refereed/Juried]
      2012
      • Wasiu Lawal, Hyeok Choi, Decomposition of Perfluorooctane Sulfonate by Nanoscale Zerovalent Iron in the Presence of Oxidants. (Poster Presentation) at The 18th International Conference on Advanced Oxidation Technologies for Treatment of Water, Air, and Soil, November 12-15, 2012, Jacksonville, FL.
        {Poster Abstract} [Refereed/Juried]
      2012
      • Wasiu Lawal and Hyeok Choi, Integrated Decomposition of Perfluorooctane Sulfonate on Nanoscale Zerovalent Iron, (Poster Presentation) at Symposium on General Poster, Division of Environmental Chemistry, The 244thAmerican Chemical Society (ACS) National Meeting, August 19-23, 2012, Philadelphia, PA.
        {Poster Abstract} [Refereed/Juried]
      2012
      • Abolfazl Zakersalehi and Hyeok Choi, Selective Oxidation of Target Contaminants onto Engineered Porous TiO2 Structure: Size-Exclusion of NOM, (Poster Presentation) at Symposium on General Poster, Division of Environmental Chemistry, The 244thAmerican Chemical Society (ACS) National Meeting, August 19-23, 2012, Philadelphia, PA.
        {Poster Abstract} [Refereed/Juried]
      2012
      • Prince Nfodzo, Hyeok Choi, Effects of pH on Metal Speciation for the Sulfate Radicals–Based Decomposition and Mineralization of Triclosan, (Poster Presentation) at Symposium on General Poster, Division of Environmental Chemistry, The 243rdAmerican Chemical Society (ACS) National Meeting, March 25-29, 2012, San Diego, CA.
        {Poster Abstract} [Refereed/Juried]
      2012
      • Wasiu Lawal, Hyeok Choi, Integrated Heterogeneous Decomposition of Perfluorooctanoic Acid by Nanoscale Zerovalent Iron at The 18th Southeastern Regional Meeting of American Chemical Society, November 14-17, 2012, Raleigh, NC.
        {Poster Abstract} [Refereed/Juried]

      Conference Paper 2011
      • Prince Nfodzo, Hyeok Choi, Sulfate Radicals are Effective for the Decomposition of PPCPs: Case Study on Triclosan. (Invited Lecture) at The 17th International Conference on Advanced Oxidation Technologies for Treatment of Water, Air, and Soil, November 7-10, 2011, San Diego, CA.
        {Conference Paper} [Refereed/Juried]
      2011
      • Hyeok Choi, Smart TiO2 Photocatalysts for Environmental Applications: Engineering Considerations (Invited Lecture) at the Korean Society of Photoscience, Sogang University, June 9-10, 2011, Seoul, Korea.
        {Conference Paper} [Refereed/Juried]
      2011
      • Hyeok Choi, Smart TiO2 Photocatalysts for Environmental Applications: Engineering Considerations (Invited Lecture) at the Korean Society of Photoscience, Sogang University, June 9-10, 2011, Seoul, Korea.
        {Conference Paper} [Refereed/Juried]

      Journal Article 2011
      • Prince Nfodzo, Hyeok Choi, Triclosan Decomposition by Sulfate Radicals: Effects of Oxidant and Metal Doses. Chemical Engineering Journal 174 (2011) 629-634.
        {Journal Article} [Refereed/Juried]
      2011
      • Prince Nfodzo, Hyeok Choi, Sulfate radicals destroy pharmaceuticals and personal care products. Submitted for publication in Environmental Engineering Science 28 (2011) 605-609.
        {Journal Article} [Refereed/Juried]

      Lecture/Speech 2011
      • Hyeok Choi, TiO2-Based Advanced Oxidation Nanotechnologies for Environmental Applications (Seminar Presentation), in Chemical Engineering, Kyung Hee University, June 16, 2011, Suwon, South Korea.
        {Lecture/Speech} [Non-refereed/non-juried]
      2011
      • Hyeok Choi, TiO2-Based Advanced Oxidation Nanotechnologies for Environmental Applications (Seminar Presentation), in Civil and Environmental Engineering, Sungkyunkwan University, June 8, 2011, Suwon, South Korea.
        {Lecture/Speech} [Non-refereed/non-juried]

      Poster Abstract 2011
      • Hyeok Choi, Particle Aggregation and Agglomeration: A Key to Understanding TiO2 Nanoparticles, (Poster Presentation) at Symposium on General Poster, Division of Environmental Chemistry, The 242ndAmerican Chemical Society (ACS) National Meeting, August 28-September 1, 2011, Denver, CO.
        {Poster Abstract} [Refereed/Juried]
      2011
      • Prince Nfodzo and Hyeok Choi, Preliminary Studies on Sulfate Radical-Based Decomposition of Triclosan, (Poster Presentation) at Symposium on General Poster, Division of Environmental Chemistry, The 242ndAmerican Chemical Society (ACS) National Meeting, August 28-September 1, 2011, Denver, CO.
        {Poster Abstract} [Refereed/Juried]
      2011
      • Prince Nfodzo and Hyeok Choi, Sulfate Radical-Based Degradation of Pharmaceuticals and Personal Care Products Using Aqueous Ferrous-Peroxymonosulfate/Persulfate Systems, (Poster Presentation) at Symposium on Occurrence, Detection, and Removal of Pharmaceuticals and Personal Care Products, Division of Environmental Chemistry, The 241st American Chemical Society (ACS) National Meeting, March 27-31, 2011, Anaheim, CA.
        {Poster Abstract} [Refereed/Juried]
      2011
      • Tushar Patil and Hyeok Choi, Fundamental Difference Between Nanoparticles and Nanostructured Particles: An Efforts to Harmonize Submicron Particle Nomenclature, (Poster Presentation) at Symposium on Environmental Applications and Implications of Nanotechnology, Division of Environmental Chemistry, The 241stAmerican Chemical Society (ACS) National Meeting, March 27-31, 2011, Anaheim, CA.
        {Poster Abstract} [Refereed/Juried]

      Book Chapter 2010
      • Hyeok Choi, Souhail R. Al-Abed, and Dionysios D. Dionysiou, Elias Stathatos, and Panagiotis Lianos, TiO2-based advanced oxidation nanotechnologies for water purification and reuse, pp. 229–254, in: Sustainability Science and Engineering, Volume 2: Sustainable Water for the Future(Eds. Isabel I. Escobar and Andrea I. Schafer, ISSN 1871-2711), Elsevier Science, Netherlands, 2010.
        {Book Chapter} [Refereed/Juried]

      Conference Paper 2010
      • Souhail R. Al-Abed and Hyeok Choi, Evaluating Chemical Reactivity and Mechanical Stability of Nano Palladized Iron Embedded in Activated Carbon on Dechlorination of PCBs, (Oral Presentation) at Symposium on Redox Processes on Nanoparticles, Nanomaterials, and Nanostructured Systems in the Environment, The PACIFICHEM2010, December 15-20, 2010, Honolulu, HW
        {Conference Paper} [Refereed/Juried]
      2010
      • Hyeok Choi and Souhail R. Al-Abed, Reactive activated carbon impregnated with Fe/Pd nanoparticles: Innovative material development and PCB cleanup strategy, (Oral Presentation) at Symposium on Environmental Applications and Implications of Nanotechnology, Division of Environmental Chemistry, The 240thAmerican Chemical Society (ACS) National Meeting, August 22-26, 2010, Boston, MA.
        {Conference Paper} [Refereed/Juried]
      2010
      • Hyeok Choi and Dionysiou, Nanostructured titanium oxide photocatalytic films and membranes: Concept and materials development, (Oral Presentation) at 18th International Conference on Photochemical Conversion and Storage of Solar Energy, July 25-30, 2010, Seoul, Korea.
        {Conference Paper} [Refereed/Juried]
      2010
      • Hyeok Choi and Dionysios D. Dionysiou, Nanostructured TiO2 photocatalytic particles, films, and membranes for environmental applications, (Oral Presentation) at Symposium on Nanoporous Materials for Environmental Applications, Division of Environmental Chemistry, The 239thAmerican Chemical Society (ACS) National Meeting, March 21-25, 2010, San Francisco, CA.
        {Conference Paper} [Refereed/Juried]

      Journal Article 2010
      • Hyeok Choi, Souhail R. Al-Abed, Effect of reaction environments on PCB reactivity with activated carbon impregnated with palladized iron. Journal of Hazardous Materials 179 (2010) 869-874.
        {Journal Article} [Refereed/Juried]
      2010
      • Natalia Quici, Maria L. Vera, Hyeok Choi, D. D. Dionysiou, Maria I. Litter, H. Destaillats, Effects of key parameters on the photocatalytic oxidation of toluene in air under UVC irradiation at 254+185 nm. Applied Catalysis B: Environmental 95 (2010) 3121-319.
        {Journal Article} [Refereed/Juried]
      2010
      • Gautham Jegadeesan, Souhail R. Al-Abed, Vijayakumar Sundaram, Hyeok Choi, Kirk G. Scheckel, Dionysios D. Dionysiou, Arsenic sorption on TiO2 nanoparticles: Kinetics, equilibrium and spectroscopic investigation. Water Research 44 (2010) 965-973.
        {Journal Article} [Refereed/Juried]
      2010
      • Valeria Puddu, Hyeok Choi, Dionysios D. Dionysiou, Gianluca Li Puma, TiO2 Photocatalyst for indoor air remediation: Influence of crystallinity, crystal phase, and UV radiation intensity on trichloroethylene degradation. Applied Catalysis B: Environmental 94 (2010) 211-218.
        {Journal Article} [Refereed/Juried]

      Lecture/Speech 2010
      • Hyeok Choi, Nanotechnology in Environmental Engineering: Some Case Studies on Innovative Materials Development and Environmental Contaminants Cleanup (Seminar Presentation) at the Graduate Materials Seminar in Materials Science and Engineering, The University of Texas at Arlington, October 8, 2010, Arlington, TX.
        {Lecture/Speech} [Non-refereed/non-juried]

      Poster Abstract 2010
      • Hyeok Choi and Souhail R. Al-Abed, Reactive activated carbon impregnated with iron nanoparticles as a new environmental risk management option for contaminated sites, (Poster Presentation) at Symposium on Black Carbon as Geosorbent and Beyond: Contaminant Sorption, Soil Fertilization, and Carbon-Negative Strategy, Division of Environmental Chemistry, The 240thAmerican Chemical Society (ACS) National Meeting, August 22-26, 2010, Boston, MA.
        {Poster Abstract} [Refereed/Juried]
      2010
      • Hyeok Choi and Souhail R. Al-Abed, Implementation of pallidized iron-impregnated reactive activated carbon system for PCB clean-up: Effects of PCB loading, reaction pH, and co-existing NOM and ionic species, (Poster Presentation) at Division of Environmental Chemistry, The 239thAmerican Chemical Society (ACS) National Meeting, March 21-25, 2010, San Francisco, CA.
        {Poster Abstract} [Refereed/Juried]

      Book Chapter 2009
      • Hyeok Choi, Souhail R. Al-Abed, and Dionysios D. Dionysiou, Nanostructured titanium oxide films and membranes-based photocatalysis for water treatment, pp. 39–46, in: Nanotechnology Applications for Clean Water (Eds. Nora Savage, Mamadou Diallo, Jeremiah Duncan, Anita Street, and Richard Sustich, ISBN: 978-0-8155-1578-4), William Andrew Publishing, Norwich, NY, 2009.
        {Book Chapter} [Refereed/Juried]

      Conference Paper 2009
      • Elias Stathatos, Hyeok Choi, and Dionysios D. Dionysiou, Porous nanocrystalline TiO2 fibers for the destruction of organic contaminants in water (in Greek), 4th Pan-Hellenic Conference on Porous Materials, The University of Patras Conference Center, October 22-23, 2009, Patras, Greece.   
        {Conference Paper} [Refereed/Juried]
      2009
      • Natalia Quici, Maria L. Vera, Hyeok Choi, D. D. Dionysiou, Maria I. Litter, H. Destaillats, Effects of key parameters on the photocatalytic oxidation of toluene at low concentrations in air under 254+185 nm-UV irradiation, 2nd European Conference on Environmental Applications of Advanced Oxidation Processes (EAAOP2), September 9-11, 2009, Cyprus.
        {Conference Paper} [Refereed/Juried]
      2009
      • Souhail R. Al-Abed, Gautham Jegadeesan, Hyeok Choi, Dionysios D. Dionysiou, Arsenic removal using titanium dioxide nanoparticles: Macroscopic and spectroscopic evaluation, (Oral Presentation) Division of Environmental Chemistry, The 238thAmerican Chemical Society (ACS) National Meeting, August 16-20, 2009, Washington, DC.
        {Conference Paper} [Refereed/Juried]
      2009
      • Maria G. Antoniou, Persoulla A. Nicolaou, Jody A. Shoemaker, Hyeok Choi, Elias, Stathatos, Armah A. de la Cluz, Dionysios D. Dionysiou, Detoxification of water contaminated with the cyanotoxin, microcystin-LR by utilizing thin TiO2 photocatalytic films, (Oral Presentation) International Environmental Education and Research Session, The Association of Environmental Engineering and Science Professors 2009 Conference, July 26-29, 2009, University of Iowa, Iowa City, IA.
        {Conference Paper} [Refereed/Juried]
      2009
      • Hyeok Choi, Current Issues in TiO2-Based Advanced Oxidation Technologies and Development of New TiO2 Materials. (Keynote Presentation) at The 15th International Conference on Advanced Oxidation Technologies for Treatment of Water, Air, and Soil, October 5-8, 2009, Niagara Fall, NY.
        {Conference Paper} [Refereed/Juried]

      Conference Proceeding 2009
      • Maria G. Antoniou, Hyeok Choi, Elias Stathatos, Armah Delacruz, Jody Shoemaker, Soulla Nicolaou, and Dionysios D. Dionysiou, The detoxification of MC-LR with thin photocatalytic films, (Oral Presentation) in: Proceedings of the International Environmental Education and Research Grand Challenge Session of the Association of Environmental Engineering and Science Professors 2009 Conference, July 26-29, 2009, Iowa City, IA. 
        {Conference Proceeding} [Refereed/Juried]

      Journal Article 2009
      • Hyeok Choi, Souhail R. Al-Abed, Shirish Agarwal, Catalytic role of palladium and relative reactivity of substituted chlorines during adsorption and treatment of PCBs on reactive activated carbon. Environmental Science and Technology 43 (2009) 7510-7515.
        {Journal Article} [Refereed/Juried]
      2009
      • Hyeok Choi, Souhail R. Al-Abed, Shirish Agarwal, Effects of ageing and oxidation of palladized iron embedded in activated carbon on the dechlorination of 2-chlorobiphenyl, Environmental Science and Technology 43 (2009) 4137-4142.
        {Journal Article} [Refereed/Juried]
      2009
      • Hyeok Choi, Shirish Agarwal, Souhail R. Al-Abed, Adsorption and simultaneous dechlorination of PCBs by GAC impregnated with ZVI/Pd bimetallic particles: Mechanistic aspects and reactive capping barrier concept, Environmental Science and Technology 43 (2009) 488-493.
        {Journal Article} [Refereed/Juried]
      2009
      • Hyeok Choi, Souhail R. Al-Abed, PCB congener sorption to carbonaceous sediment components: macroscopic comparison and characterization of sorption kinetics and mechanism, Journal of Hazardous Materials 165 (2009) 860-866.
        {Journal Article} [Refereed/Juried]
      2009
      • Qiujing Yang, Hyeok Choi, Souhail R. Al-Abed, Dionysios D. Dionysiou, Iron-cobalt nanocomposite catalysts: Heterogeneous peroxymonosulfate activation, cobalt leaching, and ferromagnetic properties for environmental applications, Applied Catalysis B: Environment 88 (2009) 462-469.
        {Journal Article} [Refereed/Juried]

      Lecture/Speech 2009
      • Hyeok Choi, Research Overview on Environmental Nanotechnology for Physicochemical Treatment Processes, (Seminar Presentation) in Civil and Environmental Engineering, Northeastern University, February 12, 2009, Boston, MA.
        {Lecture/Speech} [Non-refereed/non-juried]

      Poster Abstract 2009
      • Hyeok Choi, Souhail R. Al-Abed, Shirish Agarwal, Eric Graybill, Reactive activated carbon impregnated with Fe/Pd: PCBs dechlorination reactivity and capacity, ageing, and oxidation, (Poster Presentation) Division of Environmental Chemistry, The 237thAmerican Chemical Society (ACS) National Meeting, March 22-26, 2009, Salt Lake City, UT.
        {Poster Abstract} [Refereed/Juried]

      Conference Paper 2008
      • Hyeok Choi, Souhail R. Al-Abed, Shirish Agarwal, Eric Graybill, and Dionysios D. Dionysiou, Activated carbon incorporated with Fe/Pd bimetallic nanoparticles: From material development to PCBs clean up, (Oral presentation) at the first International Conference on “In-Situ and Ex-Situ Remediation of Soil, Sediment and Groundwater – Biological, Chemical and Physical Technologies: Where Are We Now and Where Are We Going?, September 22-25, 2008, San Diego, California.
        {Conference Paper} [Refereed/Juried]
      2008
      • Qiujing Yang, Aditya Rastogi, Hyeok Choi, Souhail R. Al-Abed, and Dionysios D. Dionysiou, Generation of sulfate radicals by homogeneous and heterogeneous activation of peroxymonosulfate with iron-based catalysts. (Oral presentation) at the 14th International Conference on “Advanced Oxidation Technologies for Treatment of Water, Air, and Soil (AOTs-14), September 22-25, 2008, San Diego, California.
        {Conference Paper} [Refereed/Juried]
      2008
      • Hugo Destaillats, Natalia Quici, Daria Kibanova, Maria L. Vera, Hyeok Choi, Javiera Cervini-Silvea, Dionysios D. Dionysiou, and Marta I. Litter, Elimination of indoor air pollutants by photocatalytic oxidation: Key parameters and challenges. (Oral presentation) at the 13rd International Conference on “TiO2 Photocatalysis: Fundamentals and Applications, September 22-25, 2008, San Diego, California.
        {Conference Paper} [Refereed/Juried]
      2008
      • Dionysios D. Dionysiou, Maria G. Antoniou, Miguel Pelaez, Hyeok Choi, Armah, A de la Cruz, and, Jody A. Shoemaker, Application of UV and visible-light activated nanostructured TiO2 catalysts for the destruction of emerging organic contaminants in water, (Oral Presentation) at the Symposium on Environmental, Health, and Safety Aspects of Engineered Nanomaterials, Division of Analytical Chemistry, The 236thAmerican Chemical Society National Meeting (ACS), August 17-21, 2008, Philadelphia, PA.
        {Conference Paper} [Refereed/Juried]
      2008
      • Qiujing Yang, Hyeok Choi, Souhail R. Al-Abed, Dionysios D. Dionysiou, Heterogeneous Activation of Peroxymonosulfate with iron-cobalt bimetallic nanocatalysts, (Oral Presentation) at the Symposium on Environmental Applications, Implications, and Ethics of Nanoparticles, Nanomaterials, Nanodevices, and Nanosystems, 1st International Conference from Nanoparticles and Nanomaterials to Nanodevices and Nanosystems (IC4N-2008), June 16-18, 2008, Chalkidiki, Greece.
        {Conference Paper} [Refereed/Juried]
      2008
      • Souhail R. Al-Abed, Hyeok Choi, Shirish Agarwal, Dionysios D. Dionysiou, Applications of nanomaterials in risk management of environmental pollutants: The use of bimetallic systems, (Oral Presentation) at the Symposium on Environmental Applications, Implications, and Ethics of Nanoparticles, Nanomaterials, Nanodevices, and Nanosystems, 1st International Conference from Nanoparticles and Nanomaterials to Nanodevices and Nanosystems (IC4N), June 16-18, 2008, Chalkidiki, Greece.
        {Conference Paper} [Refereed/Juried]
      2008
      • Valeria Puddu, Gianluca Li Puma, Hyeok Choi, and Dionysios D. Dionysiou, Photocatalytic decomposition of trichloroethylene in air by nanostructured TiO2 films: Effect of TiO2 properties and UV light intensity, (Oral Presentation) at the Symposium on Chemical Processing of Nanostructured Materials, 2008 American Institute of Chemical Engineers (AICHE) Spring Meeting, April 6-10, 2008, New Orleans, LA.
        {Conference Paper} [Refereed/Juried]
      2008
      • Maria G. Antoniou, Hyeok Choi, Jody A. Shoemaker, Armah A. de la Cruz, and Dionysios D. Dionysiou, Intermediates of cyanobacterial toxins with hydroxyl-radical based advanced oxidation technologies (HT-AOTs), (Oral Presentation) at the 2008 Annual Conference and Exposition (ACE) of American Water Works Association (AWWA), June 8-12, 2008, Atlanta, GA.
        {Conference Paper} [Refereed/Juried]
      2008
      • Miguel Pelaez, Maria G. Antoniou, Hyeok Choi, Armah A. de la Cruz, Jody A. Shoemaker, Dionysios D. Dionysiou, Effects of water parameters on the degradation of microcystin-LR under solar light-activated TiO2 photocatalysts, (Oral Presentation) in: Extended Abstract of Advances in Abiotic Transformation Processes for Micropollutants in Drinking Water and for Sourcewater Protection, Division of Environmental Chemistry, 235thAmerican Chemical Society (ACS) National Meeting, April 6-10, 2008, New Orleans, LA.
        {Conference Paper} [Refereed/Juried]

      Conference Proceeding 2008
      • Kai Zhang, Hyeok Choi, Dionysios D. Dionysiou and Daniel B. Oerther, Influence of loading patterns on sludge properties and membrane fouling in membrane bioreactors treating synthetic early planetary base wastewater, (Oral Presentation) in: Proceedings of the Membrane Technology 2008 Conference Jointed with Water Environment Federation Conference and Exposition (WEFTEC), October 18-22, 2008, Chicago, IL.
        {Conference Proceeding} [Refereed/Juried]
      2008
      • Souhail R. Al-Abed and Hyeok Choi, Implications of Fe/Pd bimetallic nanoparticles immobilized on adsorptive activated carbon for the remediation of groundwater and sediment contaminated with PCBs, (Oral Presentation) in: Proceedings of the 2008 International Environmental Nanotechnology Conference: Applications and Implications, Oct. 7-9, 2008, Chicago, IL.
        {Conference Proceeding} [Refereed/Juried]
      2008
      • Natalia Quici, Daria Kibanova, Maria Laura Vera, Hyeok Choi, Dionysios. D. Dionysiou, Maria I. Litter, Javiera Cervini-Silva, Alfred T. Hodgson, Hugo Destailates, Investigation of Key Parameters Influencing the Efficient Photocatalytic Oxidation of Indoor Volatile Organic Compounds (VOCs), (Oral Presentation) in: Proceedings of the 11th International Conferences on Indoor Air Quality and Climate, Aug. 17-22, 2008, Copenhagen, Denmark.
        {Conference Proceeding} [Refereed/Juried]

      Journal Article 2008
      • Kai Zhang, Hyeok Choi, Dionysios D. Dionysiou, and Daniel B. Oerther, Application of membrane bioreactors in the preliminary treatment of early planetary base wastewater for long term space missions, Water Environment Research80 (2008) 2209-2218.
        {Journal Article} [Refereed/Juried]
      2008
      • Qiujing Yang, Hyeok Choi, Yongjun Chen, Dionysios D. Dionysiou, Heterogeneous activation of peroxymonosulfate by supported cobalt catalysts for the degradation of organic contaminants in water: The effects of support, cobalt precursor and UV irradiation, Applied Catalysis B: Environmental 77 (2008) 300-307.
        {Journal Article} [Refereed/Juried]
      2008
      • Suzanne K. Lunsford, Nicole Speelman, Jelynn Stinson, Amber Yeary, Justyna Widera, Hyeok Choi, Dionysios D. Dionysiou, Electroanalytical and spectroscopic studies of poly(2,2’-bithiophene) modified platinum electrode to detect catechol in the presence of common interferent ascorbic acid, Journal of Chemical Education 85 (2008) 128-129.
        {Journal Article} [Refereed/Juried]
      2008
      • Hyeok Choi, Souhail R. Al-Abed, Shirish Agarwal, Dionysios D. Dionysiou, Synthesis of reactive nano Fe/Pd bimetallic system-impregnated activated carbon for the simultaneous adsorption and dechlorination of PCBs, Chemistry of Materials 20 (2008) 3649-3655.
        {Journal Article} [Refereed/Juried]

      Poster Abstract 2008
      • M. I. Litter, N. Quici, M. L. Vera, Hyeok Choi, D. D. Dionysiou, H. Destaillats, Parameter optimization for the photocatalytic oxidation of toluene in the gas phase, (Poster Presentation), in the 5th European Meeting on Solar Chemistry and Photocatalysis: Environmental Application, (SPEA 5), October 4-8 2008, Sicily, Italy.
        {Poster Abstract} [Refereed/Juried]
      2008
      • Hyeok Choi, Shirish Agarwal, Dionysios D. Dionysiou, and Souhail R. Al-Abed, Reactive Fe/Pd bimetallic systems-impregnated adsorptive activated carbon for the environmental risk management of contaminated sites, (Poster Presentation) in: Extended Abstract of the General Papers, Division of Environmental Chemistry, 235thAmerican Chemical Society (ACS) National Meeting, April 6-10, 2008, New Orleans, LA.
        {Poster Abstract} [Refereed/Juried]

      Conference Paper 2007
      • Hyeok Choi, Dionysios D. Dionysiou, Surfactant templated-based sol-gel synthesis of mesoporous nanocrystalline TiO2 photocatalytic materials immobilized on supports for environmental applications, (Oral Presentation) at the Symposium on Nanoscience Fostered Advances in Sustainability, Division of Colloid and Surface Chemistry, The 233rd American Chemical Society National Meeting (ACS), March 25-29, 2007, Chicago, IL. (Invited)
        {Conference Paper} [Refereed/Juried]
      2007
      • Dionysios D. Dionysiou, Hyeok Choi, Yongjun Chen, Novel methods for the synthesis of nanostructured materials and evaluation for the removal of emerging environmental contaminants from water. (Plenary Presentation) at 3rd International Symposium on Environmental Nanotechnology (ISENT), KIST, October 18, 2007, Seoul, South Korea.
        {Conference Paper} [Refereed/Juried]
      2007
      • Dionysios D. Dionysiou, Maria G. Antoniou, Hyeok Choi, Armah. A. de la Cruz, and Jody A. Shoemaker, Advanced oxidation technologies and nanotechnologies for water treatment: fundamentals, development and application in the destruction of microcystin LR. (Oral Presentation) at the U.S. EPA Workshop on Innovative Approaches for Detecting Microorganisms in Water, June 18-20, 2007, Cincinnati, Ohio
        {Conference Paper} [Non-refereed/non-juried]
      2007
      • Michelle Richter, Suzanne K. Lunsford, Amber Yearly, Jelynn Stinson, Hyeok Choi, Miguel Pelaez and Dionysios D. Dionysiou, Sonogel-carbon electrode sensor developed for detection of environmental pollutants such as PBT (persistent, bioaccumulative and toxic) chemicals, (Oral Presentation) in: Extended Abstract of the Symposium on Recent Developments in Sensors and Sensor Networks for Contaminants in Environmental Systems, Division of Environmental Chemistry, 234thAmerican Chemical Society (ACS) National Meeting, August 19-23, 2007, Boston, MA.
        {Conference Paper} [Refereed/Juried]
      2007
      • Dionysios D. Dionysiou, Maria G. Antoniou, Hyeok Choi, Armah A. de la Cruz, and Jody A. Shoemaker, Ultraviolet- and solar light-activated nanostructured TiO2 photocatalysts: Application in the destruction of cyanotoxins, a group of emerging drinking water contaminants, (Keynote Presentation) at the Symposium on Catalytic Control of Emerging Micropollutants, Division of Environmental Chemistry, 233rd American Chemical Society National Meeting (ACS), March 25-29, 2007, Chicago, IL.
        {Conference Paper} [Refereed/Juried]
      2007
      • Hyeok Choi Maria G. Antoniou, and Dionysios D. Dionysiou, Visible light-activated mesoporous titanium dioxide photocatalysts synthesized via sol-gel method employing nitrogen-containing surfactant templates, (Oral Presentation) at the Symposium on Nanotechnology and the Environment: Focus on Green Nanotechnology, Division of Industrial and Engineering Chemistry, The 233rdAmerican Chemical Society National Meeting (ACS), March 25-29, 2007, Chicago, IL.
        {Conference Paper} [Refereed/Juried]
      2007
      • Dionysios D. Dionysiou, Maria G. Antoniou, Hyeok Choi, Yongjun Chen, Miguel Pelaez, Armah A. de la Cruz, and Jody A. Shoemaker, Destruction of cyanobacterial toxins by UV/TiO2 photocatalysis–synthesis of TiO2 films and reaction intermediates. (Keynote Presentation) at The 12th International Conference on TiO2 Photocatalysis: Fundamentals and Applications, September 24-27, 2007, Niagara Fall, NY.
        {Conference Paper} [Refereed/Juried]
      2007
      • Souhail Al-Abed, Shirish Agarwal, Hyeok Choi, Yuanxiang Fang, Nanoscale Fe/Pd and Mg/Pd bimetals and Fe/Pd-immobilized GAC system for the adsorption and dechlorination of PCBs, (Plenary Presentation) at 3rd International Symposium on Environmental Nanotechnology (ISENT), KIST, October 18, 2007, Seoul, South Korea.
        {Conference Paper} [Refereed/Juried]

      Journal Article 2007
      • Suzanne K. Lunsford, Amber Yeary, Jelynn Stinson, Hyeok Choi, Dionysios D. Dionysiou, Synthesis of a sonogel-carbon modified sensor electrode with titanium oxide (TiO2) to detect catechol in the presence of common inteferent by voltammetric studies, Analytical Science Digital Library (ASDL) e-Labware Online Articles, May 2007. Online Educational Journal at http://www.asdlib.org/onlineArticles/elabware.
        {Journal Article} [Refereed/Juried]
      2007
      • Hyeok Choi, Maria G. Antoniou, Miguel Pelaez, Armah A. de la Cruz, Jody A. Shoemaker, Dionysios D. Dionysiou, Mesoporous nitrogen-doped TiO2 for the photocatalytic destruction of the cyanobacterial toxin microcystin-LR under  visible light, Environmental Science and Technology 41 (2007) 7530-7535.
        {Journal Article} [Refereed/Juried]
      2007
      • Hyeok Choi, Elias Stathatos and Dionysios D. Dionysiou, Effect of surfactant in a modified sol on the physicochemical properties and photocatalytic activity of crystalline TiO2 nanoparticles, Topics in Catalysis 44 (2007) 513-521.
        {Journal Article} [Refereed/Juried]
      2007
      • Hyeok Choi, Maria G. Antoniou, Armah A. de la Cruz, Elias Stathatos and Dionysios D. Dionysiou, Photocatalytic TiO2 films and membranes for the development of efficient wastewater treatment and reuse systems, Desalination 202 (2007) 199-206.
        {Journal Article} [Refereed/Juried]
      2007
      • Elias Stathatos, Hyeok Choi and Dionysios D. Dionysiou, A simple procedure of making room temperature mesoporous TiO2 films with high purity and enhanced photocatalytic activity, Environmental Engineering Science 24 (2007) 13-20.
        {Journal Article} [Refereed/Juried]
      2007
      • Qiujing Yang, Hyeok Choi, Dionysios D. Dionysiou, Nanocrystalline cobalt oxide immobilized onto titanium dioxide nanoparticles for the heterogeneous activation of peroxymonosulfate, Applied Catalysis B: Environmental 74 (2007) 170-178.
        {Journal Article} [Refereed/Juried]
      2007
      • Kai Zhang, Hyeok Choi, Mauyi Wu, George A. Sorial, Dionysios D. Dionysiou, and Daniel B. Oerther, An ecology-based analysis of irreversible membrane biofouling in MBRs, Water Science and Technology 55 (2007) 395-402.
        {Journal Article} [Refereed/Juried]
      2007
      • Suzanne K. Lunsford, Hyeok Choi, Jelynn Stinson, Amber Yeary, Dionysios D. Dionysiou, Voltammetric determination of catechol using a sonogel carbon electrode modified with nanostructured titanium dioxide, Talanta 73 (2007) 172-178.
        {Journal Article} [Refereed/Juried]

      Lecture/Speech 2007
      • Dionysios D. Dionysiou, Maria G. Antoniou, Hyeok Choi, Armah A. de la Cruz, and Jody A. Shoemaker, Environmental engineering aspects for chemical engineers: Case study for the destruction of cyanotoxins using advanced oxidation nanotechnologies. (Invited lecture) at AIChE StudentChapter, University of Cincinnati, April 25, 2007, Cincinnati, OH.
        {Lecture/Speech} [Non-refereed/non-juried]
      2007
      • Dionysios D. Dionysiou, Maria G. Antoniou, Hyeok Choi, Armah A. de la Cruz, and Jody A. Shoemaker, Destruction of cyanotoxins using ultraviolet- and solar light-activated nanostructured TiO2 photocatalysts, (Invited Web-cast Presentation) at US Environmental Protection Agency (US EPA), April 5, 2007, Cincinnati, OH.
        {Lecture/Speech} [Refereed/Juried]
      2007
      • Hyeok Choi, Advanced Oxidation Nanotechnologies for Environmental Applications, (Seminar Presentation) in Civil and Environmental Engineering, University of Massachusetts, March 2, 2007, Amherst, MA.
        {Lecture/Speech} [Non-refereed/non-juried]
      2007
      • Maria G. Antoniou, Hyeok Choi, Armah A. de la Cruz, Jody A. Shoemaker and Dionysios D. Dionysiou, Application of Thin Nano-TiO2 Photocatalytic Films for the Degradation of the Cyanobacterial Toxin Microcystin-LR: Reaction Intermediates, (Seminar Presentation) in the Advanced Graduate Seminar in Environmental Science and Engineering, University of Cincinnati, February 23, 2007, Cincinnati, OH.
        {Lecture/Speech} [Non-refereed/non-juried]
      2007
      • Dionysios D. Dionysiou, Hyeok Choi, Environmental Catalysis and Chemistry in Water Remediation, (Invited Lecture) at University of North Carolina, December 6, 2007, Charlotte, NC.
        {Lecture/Speech} [Non-refereed/non-juried]
      2007
      • Dionysios D. Dionysiou, Maria G. Antoniou, Hyeok Choi, Armah A. de la Cruz, Jody A. Shoemaker, and Suzanne Lunsford, Advanced oxidation technologies and nanotechnologies for water treatment: Fundamentals, development and application in the destruction of cyanobacterial toxins. (Seminar Presentation) at Patras Technological University, June 27, 2007, Patras, Greece.
        {Lecture/Speech} [Non-refereed/non-juried]
      2007
      • Dionysios D. Dionysiou, Maria G. Antoniou, Hyeok Choi, Armah A. de la Cruz, Jody A. Shoemaker, and Suzanne Lunsford, Advanced oxidation technologies and nanotechnologies for water treatment: Fundamentals, development and application in the destruction of cyanobacterial toxins. (Seminar Presentation) at University of Patras, June 29, 2007, Patras, Greece.
        {Lecture/Speech} [Non-refereed/non-juried]
      2007
      • Dionysios D. Dionysiou, Maria G. Antoniou, Hyeok Choi, Armah A. de la Cruz, Jody A. Shoemaker, and Suzanne Lunsford, Advanced oxidation technologies and nanotechnologies for water treatment: Fundamentals, development and application in the destruction of cyanobacterial toxins. (Seminar Presentation) at University of Cyprus, July 3, 2007, Nicosia, Cyprus.
        {Lecture/Speech} [Non-refereed/non-juried]
      2007
      • Dionysios D. Dionysiou, Maria G. Antoniou, Hyeok Choi, Armah A. de la Cruz, Jody A. Shoemaker, and Suzanne Lunsford, Advanced oxidation technologies and nanotechnologies for water treatment: Fundamentals, development and application in the destruction of cyanobacterial toxins. (Seminar Presentation) at Ecole des Mines de Nantes, July 12, 2007, Nantes, France.
        {Lecture/Speech} [Non-refereed/non-juried]
      2007
      • Hyeok Choi, Advanced Oxidation Nanotechnologies for Environmental Remediation, (Seminar Presentation) in Civil and Environmental Engineering, University of Hawaii, April 30, 2007, Honolulu, HI.
        {Lecture/Speech} [Non-refereed/non-juried]

      Poster Abstract 2007
      • Hyeok Choi, Maria G. Antoniou, Miguel Pelaez, Armah A. de la Cruz, and Dionysios D. Dionysiou, Synthesis of N-TiO2 using surfactant and evaluation for the destruction of microcystin-LR, (Poster Presentation) at the 12th International Conference on TiO2 Photocatalysis: Fundamental and Applications, Sept. 24-27, 2007, Niagara Falls, NY.
        {Poster Abstract} [Refereed/Juried]
      2007
      • Valeria Puddu, Hyeok Choi, Gianluca Li Puma, and Dionysios D. Dionysiou, Gas phase photocatalytic decomposition of trichloroethylene by immobilized TiO2 film reactor: Effect of TiO2 properties and UV light intensity, (Poster Presentation) at the 12th International Conference on TiO2 Photocatalysis: Fundamental and Applications, Sept. 24-27, 2007, Niagara Falls, NY.
        {Poster Abstract} [Refereed/Juried]
      2007
      • Kai Zhang, Hyeok Choi, Dionysios D. Dionysiou, Daniel B. Oerther, Influence of loading modes on sludge properties in membrane bioreactors treating a synthetic Early Planetary Base Wastewater, (Poster Presentation) in: Extended Abstract of the 37th Mid-Atlantic Industrial and Hazardous Waste Conference, March 21-23, 2007, Cincinnati, OH.
        {Poster Abstract} [Refereed/Juried]
      2007
      • Maria G. Antoniou, Hyeok Choi, Miguel Pelaez, Armah. A. de la Cruz, Jody A. Shoemaker and Dionysios D. Dionysiou, Visible light activated nitrogen-doped TiO2 nanostructured photocatalysts: Destruction of microcystin-LR, an emerging drinking water contaminant, (Poster Presentation) at the Second International Conference on Semiconductor Photochemistry (SP-2), July 23-25, 2007, Aberdeen, UK.
        {Poster Abstract} [Refereed/Juried]
      2007
      • Hyeok Choi, Maria G. Antoniou, Miguel Pelaez, Armah A. de la Cruz, and Dionysios D. Dionysiou, Visible light activated nitrogen-doped TiO2 nanostructured photocatalysts: Synthesis and Environmental Applications, (Poster Presentation) at the Ohio Nanotechnology Summit, April 24-25, 2007, Akron, OH.
        {Poster Abstract} [Refereed/Juried]
      2007
      • Jelynn Stinson, Suzanne Lunsford, Justyna Widera, Hyeok Choi, and Dionysios D. Dionysiou, Electrocatalytic oxidation of beta-nicotinamide adenine dinucleotide at a poly(2,2-bithiophene)-coated glassy carbon electrode, (Poster Presentation) in: Extended Abstract of the General Papers, Division of Environmental Chemistry, 233rd American Chemical Society (ACS) National Meeting, March 25-29, 2007, Chicago, IL.
        {Poster Abstract} [Refereed/Juried]
      2007
      • Maria G. Antoniou, Hyeok Choi, Armah A. de la Cruz, Jody A. Shoemaker and Dionysios D. Dionysiou, Degradation of the cyanobacterial toxin microcystin-LR with thin nano-TiO2 photocatalytic films: Reaction intermediates, (Poster Presentation) at the 2007 Annual Conference and Exposition (ACE) of American Water Works Association (AWWA), June 24-28, 2007, Toronto, Canada (Invited).
        {Poster Abstract} [Refereed/Juried]
      2007
      • Maria G. Antoniou, Hyeok Choi, Armah.A. de la Cruz, Jody Shoemaker, and Dionysios D. Dionysiou, Detoxification of cyanobacterial toxin-contaminated water using titanium dioxide photocatalytic films, (Poster Presentation) at the 2007 Ohio Nanotechnology Summit, April 24-25, 2007, Akron, OH.
        {Poster Abstract} [Refereed/Juried]
      2007
      • Amber Yearly, Jelynn Stinson, Hyeok Choi, Suzanne K. Lunsford, and Dionysios D. Dionysiou, Voltammetric determination of catechol at a sonogel-carbon electrodes in the presence of common interferents, (Poster Presentation) in: Extended Abstract of the General Papers, Division of Environmental Chemistry, 233rd American Chemical Society (ACS) National Meeting, March 25-29, 2007, Chicago, IL.
        {Poster Abstract} [Refereed/Juried]

      Conference Paper 2006
      • Maria G. Antoniou, Hyeok Choi, Armah. A. de la Cruz, Jody Shoemaker, and Dionysios D. Dionysiou, Degradation of the cyanobacterial toxin microcystin-LR with thin nano-TiO2 photocatalytic films: Reaction intermediates, (Oral Presentation) at the 68th Ohio Section American Water Works Association (AWWA) Annual Meeting, Oct. 10-13, 2006, Cleveland, OH.
        {Conference Paper} [Refereed/Juried]
      2006
      • Maria G. Antoniou, Hyeok Choi Armah. A. de la Cruz, Jody Shoemaker, and Dionysios D. Dionysiou, Application of photocatalytic films for the destruction of the cyanotoxin microcystin-LR: Reaction intermediates, (Oral Presentation) at the 11th International Conference on TiO2 Photocatalysis: Fundamental and Applications, Sept. 25-28, 2006, Pittsburgh, PA.
        {Conference Paper} [Refereed/Juried]
      2006
      • Hyeok Choi, Yong Jin Kim, Rajender S. Varma and Dionysios D. Dionysiou, Thermally stable porous anatase TiO2 prepared by sol-gel method modified with water immiscible room temperature ionic liquid and surfactant templates: synthesis, characterization, and photocatalytic evaluation, (Oral Presentation) at the 1st European Conference on Environmental Applications of Advanced Oxidation Processes (EAAOP), September 7-9, 2006, Chania, Greece.
        {Conference Paper} [Refereed/Juried]
      2006
      • Suzanne K. Lunsford, Jelynn Stinson, Hyeok Choi, Dionysios D. Dionysiou, Voltammetric determination of catechol in the presence of a common interferent ascorbic acid at a sonogel-carbon electrode modified with titanium dioxide (TiO2), in: the 210th Electrochemical Society (ECS) Meeting, October 29-November 3, 2006, Cancun, Mexico.
        {Conference Paper} [Refereed/Juried]
      2006
      • Kai Zhang, Hyeok Choi, Dionysios D. Dionysiou, and Daniel B. Oerther, Application of membrane bioreactors in the preliminary treatment of early planetary base wastewater for long term space missions, (Oral Presentation) in: Proceedings of the 79thAnnual Water Environment Federation Conference and Exposition (WEFTEC), October 21- 25, 2006, Dallas, TX.
        {Conference Paper} [Refereed/Juried]
      2006
      • Kai Zhang, Hyeok Choi, Mauyi Wu, George A. Sorial, Dionysios D. Dionysiou, and Daniel B. Oerther, An ecology-based analysis of irreversible membrane biofouling in MBRs, (Oral Presentation) in: Proceedings of the International Water Association (IWA) Specialty Conference on Biofilm Systems VI, September 24-27, 2006, Amsterdam, Netherlands.
        {Conference Paper} [Refereed/Juried]
      2006
      • Hyeok Choi and Dionysios D. Dionysiou, Thermally stable porous nanocrystalline TiO­­2 photocatalysts prepared by sol-gel method modified with water immiscible room temperature ionic liquid: synthesis, properties and environmental applications, (Oral Presentation) in: Extended Abstract of the Environmental Chemistry Awards Presentation, Division of Environmental Chemistry, 232ndAmerican Chemical Society (ACS) National Meeting, September 10-14, 2006, San Francisco, CA.
        {Conference Paper} [Refereed/Juried]
      2006
      • Hyeok Choi, Maria G. Antoniou, Armah. A. de la Cruz, Jody A. Shoemaker, and Dionysios D. Dionysiou, Surfactant templated sol-gel synthesis of mesoporous TiO2 photocatalysts and their application in the destruction of cyanobacterial toxins, (Oral Presentation) in: Extended Abstract of the Symposium on Catalysis for Water Purification and Remediation, Division of Environmental Chemistry, 232ndAmerican Chemical Society (ACS) National Meeting, September 10-14, 2006, San Francisco, CA.
        {Conference Paper} [Refereed/Juried]
      2006
      • Kai Zhang, Hyeok Choi, Mauyi Wu, Ting Lu, George A. Sorial, Dionysios D. Dionysiou, and Daniel B. Oerther, Ecology-based analysis of irreversible biofouling in membrane bioreactors, (Oral Presentation) in: Extended Abstract of the Symposium on Structure, Interactions, and Reactivity at Microbial Surfaces, Division of Colloid and Surface Chemistry, 232ndAmerican Chemical Society (ACS) National Meeting, September 10-14, 2006, San Francisco, CA.
        {Conference Paper} [Refereed/Juried]
      2006
      • Maria G. Antoniou, Hyeok Choi, Armah. A. de la Cruz, Jody Shoemaker, and Dionysios D. Dionysiou, Application of mesoporous TiO2 photocatalysts for the degradation of microcystin-LR: The degradation pathway, (Oral Presentation) in: Extended Abstract of the Symposium on Catalysis for Water Purification and Remediation, Division of Environmental Chemistry, 232ndAmerican Chemical Society (ACS) National Meeting, September 10-14, 2006, San Francisco, CA.
        {Conference Paper} [Refereed/Juried]
      2006
      • Dionysios D. Dionysiou, Maria G. Antoniou, Hyeok Choi, Armah A. de la Cruz, Jody A. Shoemaker and Suzanne Lunsford, Advanced oxidation technologies and nanotechnologies for water treatment: Development and application in the destruction of cyanobacterial toxins, (Keynote Presentation) at the 2nd International Symposium on Environmental Nanotechnology (ISENT), Gwanju Institute of Science and Technology, Nov. 3, 2006, Gwangju, Korea.
        {Conference Paper} [Refereed/Juried]

      Journal Article 2006
      • Suzanne K. Lunsford, Jelynn Stinson, Hyeok Choi, Dionysios D. Dionysiou, Voltammetric determination of catechol in the presence of a common interferent ascorbic acid at a sonogel-carbon electrode modified with titanium dioxide (TiO2), the Electrochemical Society (ECS) Transactions 3 (2006), 257-262.
        {Journal Article} [Refereed/Juried]
      2006
      • Hyeok Choi, Elias Stathatos and Dionysios D. Dionysiou, Sol-gel preparation of mesoporous photocatalytic TiO2 films and TiO2/Al2O3 composite membranes for environmental applications, Applied Catalysis B: Environmental 63 (2006) 60-67.
        {Journal Article} [Refereed/Juried]
      2006
      • Hyeok Choi, Kai Zhang, Dionysios D. Dionysiou, Daniel B. Oerther and George A. Sorial, Effect of activated sludge properties and membrane operation conditions on fouling characteristics in membrane bioreactors, Chemosphere 63 (2006) 1699-1708.
        {Journal Article} [Refereed/Juried]
      2006
      • Hyeok Choi, Elias Stathatos and Dionysios D. Dionysiou, Synthesis of nanocrystalline photocatalytic TiO2 thin films and particles using sol-gel method modified with nonionic surfactants, Thin Solid Films 510 (2006) 107-114.
        {Journal Article} [Refereed/Juried]
      2006
      • Kai Zhang, Hyeok Choi, Dionysios D. Dionysiou, George A. Sorial, and Daniel B. Oerther, Identifying pioneer bacterial species responsible for biofouling membrane bioreactors, EnvironmentalMicrobiology 8 (2006) 433-440.
        {Journal Article} [Refereed/Juried]
      2006
      • Hyeok Choi, Anna C. Sofranko, and Dionysios D. Dionysiou, Nanocrystalline TiO2 photocatalytic membranes with a hierarchical mesoporous multilayer: Synthesis, characterization, and multifunction, Advanced Functional Materials16 (2006) 1067-1074.
        {Journal Article} [Refereed/Juried]
      2006
      • Hyeok Choi, Yong-Jin Kim, Rajender S. Varma and Dionysios D. Dionysiou, Thermally stable nanocrystalline TiO2 photocatalysts synthesized via sol-gel methods modified with ionic liquid and surfactant molecules, Chemistry of Materials 18 (2006) 5377-5384.
        {Journal Article} [Refereed/Juried]

      Lecture/Speech 2006
      • Hyeok Choi, Synthesis, characterization, and environmental applications of nanostructured TiO2 photocatalytic particles, films and membranes, (Seminar Presentation) in Earth and Environmental Engineering at the Columbia University, May 8, 2006, New York, NY.
        {Lecture/Speech} [Non-refereed/non-juried]
      2006
      • Dionysios D. Dionysiou, Hyeok Choi, and Maria G. Antoniou, Advanced oxidation technologies and nanotechnologies for water purification, (Seminar Presentation) in Environmental Engineering Science at the Washington University, April 14, 2006, St. Louis, MO.
        {Lecture/Speech} [Non-refereed/non-juried]
      2006
      • Hyeok Choi, Synthesis, characterization, and environmental applications of nanostructured TiO2 photocatalytic materials, (Seminar Presentation) in Chemical, Materials, and Biomolecular Engineering at the University of Connecticut, April 11, 2006, Storrs, CT.
        {Lecture/Speech} [Non-refereed/non-juried]
      2006
      • Dionysios D. Dionysiou, Hyeok Choi, and Maria G. Antoniou, Advanced oxidation nanotechnologies for water treatment: Development and application in the destruction of cyanobacterial toxins, (Seminar Presentation) in School of Public and Environmental Affairs at the Indiana University, March 23, 2006, Bloomington, IN.
        {Lecture/Speech} [Non-refereed/non-juried]

      Poster Abstract 2006
      • Hyeok Choi, Maria G. Antoniou, Armah. A. de la Cruz, Jody Shoemaker, and Dionysios D. Dionysiou, Mesoporous TiO2 thin films: Photocatalytic destruction of microcystin-LR, (Poster Presentation) at the 11th International Conference on TiO2 Photocatalysis: Fundamental and Applications, Sept. 25-28, 2006, Pittsburgh, PA.
        {Poster Abstract} [Refereed/Juried]
      2006
      • Maria G. Antoniou, Hyeok Choi, Armah A. de la Cruz and Dionysios D. Dionysiou, Photocatalytic degradation of the hepatotoxin microcystin-LR with mesoporous TiO2 thin films, (Poster Presentation) in: Proceedings of the 1st European Conference on Environmental Applications of Advanced Oxidation Processes (EAAOP), September 7-9, 2006, Chania, Greece.
        {Poster Abstract} [Refereed/Juried]
      2006
      • Maria G. Antoniou, Hyeok Choi, Armah.A. de la Cruz, Jody Shoemaker, and Dionysios D. Dionysiou, Detoxification of cyanobacterial toxin-contaminated water using titanium dioxide photocatalytic films, (Poster Presentation) at the30thInternational Symposium on High Performance Liquid Phase Separations and Related Techniques (HPLC), June 17-23, 2006, San Francisco, CA.
        {Poster Abstract} [Refereed/Juried]
      2006
      • Hyeok Choi, Maria G. Antoniou, Armah. A. de la Cruz, and Dionysios D. Dionysiou, Nanostructured TiO2 photocatalytic films and membranes with hierarchical properties for the destruction of cyanobacterial toxins, (Poster Presentation) at the 2nd International Nanotechnology Conference on Communication and Cooperation (INC2), May 15-18, 2006, Arlington, VA.
        {Poster Abstract} [Refereed/Juried]
      2006
      • Hyeok Choi, Dionysios D. Dionysiou, Degradation of cyanobacterial toxins with immobilized TiO2 photocatalysts, (Poster Presentation) at the University of Cincinnati Showcase, April 21 – 22, 2006, Cincinnati, OH.
        {Poster Abstract} [Non-refereed/non-juried]
      2006
      • Hyeok Choi, Maria G. Antoniou, Dionysios D. Dionysiou, Photocatalytic destruction of microcystin-LR using N-doped mesoporous TiO2 under visible light irradiation, (Poster Presentation) at the 2006 Ohio Nanotechnology Summit, April 4 – 5, 2006, Columbus, OH.
        {Poster Abstract} [Refereed/Juried]
      2006
      • Gauthan Jegadeesan, Vijayakumar Sundaram, Hyeok Choi, Dionysios D. Dionysiou, and Souhail R. Al-Abed, Arsenic removal using sol-gel synthesized titanium dioxide nanoparticles, (Poster Presentation) in: Extended Abstract of the General Papers, Division of Environmental Chemistry, 232ndAmerican Chemical Society (ACS) National Meeting, September 10-14, 2006, San Francisco, CA.
        {Poster Abstract} [Refereed/Juried]
      2006
      • C. Raillard, V. Hêquet, Hyeok Choi, D.D. Dionysiou, P. Le Cloirec, Photocatalytic oxidation of VOCs: Influence of structural properties and humidity, (Poster Presentation) in: Proceedings of the 1st European Conference on Environmental Applications of Advanced Oxidation Processes (EAAOP), September 7-9, 2006, Chania, Greece.
        {Poster Abstract} [Refereed/Juried]

      Conference Paper 2005
      • Hyeok Choi, Dionysios D. Dionysiou, Ionic liquid-assisted sol-gel methods modified with surfactant molecules for the synthesis of highly porous nanostructured TiO2 photocatalyst, (Oral Presentation) at the 10th International Conference on TiO2 Photocatalysis: Fundamental and Applications, Oct. 23-27, 2005, Chicago, IL.
        {Conference Paper} [Refereed/Juried]
      2005
      • Hyeok Choi, Anna C. Sofranko, Dionysios D. Dionysiou, Self-assembling and template-based sol-gel methods for the synthesis of nanocrystalline TiO2: particles, films and membranes, (Oral Presentation) at the 10th International Conference on TiO2 Photocatalysis: Fundamental and Applications, Oct. 23-27, 2005, Chicago, IL.
        {Conference Paper} [Refereed/Juried]
      2005
      • Daniel B. Oerther, Kai Zhang, Hyeok Choi, Dionysios D. Dionysiou, George A. Sorial, Interdisciplinary research on membrane biofouling connecting engineering and microbiology, (Oral Presentation) at the 2005 Research and Educational Conference, Association of Environmental Engineering and Science Professors (AEESP), July 23-27, 2005, Potsdam, NY.
        {Conference Paper} [Refereed/Juried]
      2005
      • Hyeok Choi and Dionysios D. Dionysiou, Preparation of nanocrystalline TiO2 particles, films and membranes using ionic liquids and surfactant-assisted sol-gel methods, (Oral Presentation) at the Symposium on Nanotechnology and the Environment: Treatment/Remediation Using Nanotechnology, Division of Industrial and Engineering Chemistry, The 229thAmerican Chemical Society National Meeting (ACS), March 13-17, 2005, San Diego, CA.
        {Conference Paper} [Refereed/Juried]
      2005
      • Hyeok Choi, Anna C. Sofranko, Dionysios D. Dionysiou, Self-assembled nanostructured crystalline TiO2 thin films and TiO2/Al2O3 composite membranes with simultaneous photocatalytic, disinfection, separation, and anti-biofouling properties, (Oral Presentation) at the Symposium on Nanomaterials and the Environment, 2005 Materials Research Society (MRS) Fall Meeting, Nov. 28 – Dec. 2, 2005, Boston, MA.
        {Conference Paper} [Refereed/Juried]
      2005
      • Kai Zhang, Daniel B. Oerther, Hyeok Choi, Dionysios D. Dionysiou, and George A. Sorial, Examining the initiation of biofouling in membrane bioreactors treating pulp and paper wastewater, (Oral Presentation) in: Proceedings of the 78thAnnual Water Environment Federation Conference and Exposition (WEFTEC), October 29- November 2, 2005, Washington, D.C.
        {Conference Paper} [Refereed/Juried]
      2005
      • Hyeok Choi and Dionysios D. Dionysiou, Self-assembling and template-based sol-gel methods for the synthesis of nanocrystalline TiO2, (Oral Presentation) in: Extended Abstract of the Symposium on Environmental Nanotechnology, Environmental Chemistry Division of the 230th American Chemical Society National Meeting (ACS), August 28-September 1, 2005, Washington, DC.
        {Conference Paper} [Refereed/Juried]
      2005
      • Yueqiang Liu, Hyeok Choi, Dionysios D. Dionysiou and Gregory V. Lowry, Particle-scale understanding of TCE hydrodechlorination in water by poorly ordered nanoiron, (Oral Presentation) in: Extended Abstract of the Symposium on Environmental Nanotechnology, Environmental Chemistry Division of the 230th American Chemical Society National Meeting (ACS), August 28-September 1, 2005, Washington, DC.
        {Conference Paper} [Refereed/Juried]
      2005
      • Kai Zhang, Hyeok Choi, George A. Sorial, Dionysios D. Dionysiou and Daniel B. Oerther, Identifying bacterial populations highly correlated with irreversible membrane biofouling in MBR systems, (Oral Presentation) in: Proceedings of the 4th Activated Sludge Population Dynamic Meeting of the International Water Association (IWA), July 17-20, 2005, Gold Coast, Australia.
        {Conference Paper} [Refereed/Juried]
      2005
      • Hyeok Choi, Elias Stathatos and Dionysios D. Dionysiou, Preparation of nanostructured photocatalytic TiO2 films and membranes using sol-gel methods modified with surfactant micelles for wastewater treatment and reuse in space, (Oral Presentation) in: Proceedings of the 35th International Conference on Environmental System (ICES) and the 8th European Symposium on Space Environmental Control Systems (ESSECS), July 11-14, 2005, Rome, Italy.
        {Conference Paper} [Refereed/Juried]

      Conference Proceeding 2005
      • Hyung-Soo Kim, Hyeok Choi, Ick-Tae Yeom, Dionysios D. Dionysiou, Pilot plant study of ultrafiltration membrane system operated by feed-and-bleed mode for drinking water treatment, (Oral Presentation) in: Proceedings of the Conference of the Membrane Society of Korea, pp 41-52, May, 2005, Suwon, Korea.
        {Conference Proceeding} [Refereed/Juried]
      2005
      • Hyeok Choi, Elias Stathatos, and Dionysios D. Dionysiou, Photocatalytic TiO2 films and membranes for the development of efficient wastewater treatment and reuse systems, (Oral Presentation) in: Proceedings of the5thInternational Water Association (IWA) Specialty Conference on Wastewater Reclamation and Reuse for Sustainability (WRRS), November 8-11, 2005, Jeju, Korea.
        {Conference Proceeding} [Refereed/Juried]
      2005
      • Hyeok Choi, Elias Stathatos and Dionysios D. Dionysiou, Preparation of nanostructured TiO2 photocatalytic films and membranes using sol-gel methods modified with surfactants, (Oral Presentation) in: Extended Abstract of the 19th North American Catalysis Society Meeting (NACS), May 22-27, 2005, Philadelphia, PA.
        {Conference Proceeding} [Refereed/Juried]
      2005
      • Hyeok Choi and Dionysios D. Dionysiou, Preparation of nanostructured TiO2 photocatalysts using surfactant-assisted sol-gel method for environmental applications, pp. 112–118, in: Photocatalytic and Advanced Oxidation Technologies for Treatment of Air, Water, Soil, and Surface(Eds. David Ollis and Hussain Al-Ekabi, ISBN 0-9738746-0-0), Redox Technologies, Inc., London, Canada, 2005.
        {Conference Proceeding} [Refereed/Juried]

      Journal Article 2005
      • Hyeok Choi, Kai Zhang, Dionysios D. Dionysiou, Daniel B. Oerther and George A. Sorial, Influence of cross-flow velocity on membrane performance during filtration of biological suspension, Journal of Membrane Science 248(2005) 189-199.
        {Journal Article} [Refereed/Juried]
      2005
      • Yueqiang Liu, Hyeok Choi, Dionysios D. Dionysiou and Gregory V. Lowry, Trichloroethene hydrodechlorination in water by highly disordered monometallic nanoiron, Chemistry of Materials 17 (2005) 5315-5322.
        {Journal Article} [Refereed/Juried]
      2005
      • Hyeok Choi, Kai Zhang, Dionysios D. Dionysiou, Daniel B. Oerther and George A. Sorial, Effect of permeate flux and tangential shear on membrane fouling for wastewater treatment, Separation and Purification Technology45 (2005) 68-78.
        {Journal Article} [Refereed/Juried]
      2005
      • Kyesang Yoo, HyeoK Choi, Dionysios D. Dionysiou, Synthesis of anatase nanostructured TiO2 particles at low temperature using ionic liquid for photocatalysis, Catalysis Communications 6 (2005) 259-262.
        {Journal Article} [Refereed/Juried]
      2005
      • Hyeok Choi, Hyung-Soo Kim, Ick-Tae Yeam and Dionysios D. Dionysiou, Pilot plant study of ultrafiltration membrane system operated by feed-and-bleed mode for drinking water treatment, Desalination 172 (2005) 281-291.
        {Journal Article} [Refereed/Juried]

      Poster Abstract 2005
      • Hyeok Choi, Maria G. Antoniou, Armah A. de la Cruz, Dionysios D. Dionysiou, Development and environmental applications of TiO2 photocatalytic membranes and films, (Poster Presentation) at the 10th International Conference on TiO2 Photocatalysis: Fundamental and Applications, Oct. 23-27, 2005, Chicago, IL.
        {Poster Abstract} [Refereed/Juried]
      2005
      • Hyeok Choi, Anna C. Sofranko, Dionysios D. Dionysiou, Environmental applications of photocatalytic TiO2 films and membranes, (Poster Presentation) at the 2005 Oesper Symposium, Department of Chemistry of the University of Cincinnati and Cincinnati Section of the American Chemical Society (CINTACS ), Oct. 14, 2005, Cincinnati, OH.
        {Poster Abstract} [Non-refereed/non-juried]
      2005
      • Anna C. Sorfranko, Hyeok Choi, Dionysios D. Dionysiou, Self-assembly of nanocrystalline TiO2 thin films for the development of supported ceramic membranes with simultaneous photocatalytic, disinfection, separation, and anti-fouling functions, (Poster Presentation) at the Forum on Summer 2005 National Science Foundation (NSF) Research Experiences forUndergraduates (REU) Program for Membrane Science and Technology, Aug. 18, 2005, Cincinnati, OH
        {Poster Abstract} [Non-refereed/non-juried]
      2005
      • Hyeok Choi and Dionysios D. Dionysiou, A new approach to mesoporous nanocrystalline titania from sol-gel method modified with surfactant and ionic liquid, (Poster Presentation) at the 2005 Graduate Student Research/Scholarship Forum of the University of Cincinnati, March 4, 2005, Cincinnati, OH.
        {Poster Abstract} [Non-refereed/non-juried]
      2005
      • Kai Zhang, Hyeok Choi, George A. Sorial, Dionysios D. Dionysiou, Daniel B. Oerther, Identifying the pioneer bacterial species responsible for irreversible biofouling in membrane bioreactors, (Poster Presentation) at the 2005 Graduate Student Research/Scholarship Forum of the University of Cincinnati, March 4, 2005, Cincinnati, OH.
        {Poster Abstract} [Non-refereed/non-juried]
      2005
      • Hyeok Choi, Dionysios D. Dionysiou, Environmental applications of photocatalytic TiO2 films and membranes, (Poster Presentation) at the 2005 Annual Meeting, American Institute of Chemical Engineers (AICHE), Oct. 30 – Nov. 4, 2005, Cincinnati, OH.
        {Poster Abstract} [Refereed/Juried]
      2005
      • Kyesang Yoo, Hyeok Choi, Jin-Soo Kim, TiO2 particles for the preparation of photocatalytic membranes using ionic liquid self-assembling sol-gel methods, (Poster Presentation) in: Proceedings of the Conference of the Membrane Society of Korea, pp 122-126, May, 2005, Suwon, Korea.
        {Poster Abstract} [Refereed/Juried]

      Conference Paper 2004
      • Kyesang Yoo, Hyeok Choi, Yongjun Chen and Dionysios D. Dionysiou, Environmental implications of TiO2 nanostructured materials prepared by sol-gel methods and other wet chemistry procedures, (Oral Presentation) at the Symposium Nanotechnology and the Environment: Nano-Catalysis for Environmental Technologies, Division of Industrial and Engineering Chemistry, The 227thAmerican Chemical Society  National Meeting (ACS),March 28-April 1, 2004, Anaheim, CA.
        {Conference Paper} [Refereed/Juried]
      2004
      • Kai Zhang, Hyeok Choi, George A. Sorial, Dionysios D. Dionysiou and Daniel B. Oerther, Examining the initiation of biofouling in membrane bioreactors treating pulp and paper wastewater, (Oral Presentation) in: Proceedings of the 77thAnnual Water Environment Federation Conference and Exposition (WEFTEC), October 2-6, 2004, New Orleans, LA.
        {Conference Paper} [Refereed/Juried]
      2004
      • Hyeok Choi and Dionysios D. Dionysiou, Preparation of anatase nanostructured TiO2 particles using surfactant-assisted sol-gel method, (Oral Presentation) in: Extended Abstract of the Environmental Chemistry Division of the 228thAmerican Chemical Society National Meeting (ACS), August 22-26, 2004, Philadelphia, PA.
        {Conference Paper} [Refereed/Juried]

      Conference Proceeding 2004
      • Hyeok Choi, Kai Zhang, Dionysios D. Dionysiou, Daniel B. Oerther and George A. Sorial, Membrane filtration performance with activated sludge of continuous stirred-tank reactor and plug flow reactor for the treatment of paper mill wastewater: membrane fouling, (Oral Presentation) in: Proceedings of the International Water Association (IWA) Specialty Conference on Water Environment-Membrane Technology (WEMT), pp 809-816, June 7-10, 2004, Seoul, Korea.
        {Conference Proceeding} [Refereed/Juried]
      2004
      • Hyeok Choi and Dionysios D. Dionysiou, Preparation of nanostructured TiO2 photocatalysts using surfactant-assisted sol-gel method for environmental applications, (Oral Presentation) in: Proceedings of the 9thInternational Conference on TiO2 Photocatalysis: Fundamentals and Applications (TiO2-9), October 24-28, 2004, San Diego, CA.
        {Conference Proceeding} [Refereed/Juried]

      Journal Article 2004
      • Kyesang Yoo, Hyeok Choi, and Dionysios D. Dionysiou, Ionic liquid assisted preparation of nanostructured TiO2 particles, Chemical Communications(2004) 2000-2001.
        {Journal Article} [Refereed/Juried]

      Poster Abstract 2004
      • Hyeok Choi and Dionysios D. Dionysiou, Fabrication of nanoporous and ultra-thin TiO2 photocatalytic membranes using surfactant-based self-assembling sol-gel method, (Poster Presentation) at the 2004 Graduate Student Research/Scholarship Forum of the University of Cincinnati, March 12, 2004, Cincinnati, OH.
        {Poster Abstract} [Non-refereed/non-juried]
      2004
      • Kai Zhang, Hyeok Choi, Dionysios D. Dionysiou, George A. Sorial and Daniel B. Oerther, Examining the initiation of biofouling in membrane bioreactors for wastewater treatment, (Poster Presentation) at the 2004 Graduate Student Research/Scholarship Forum of the University of Cincinnati, March 12, 2004, Cincinnati, OH.
        {Poster Abstract} [Non-refereed/non-juried]
      2004
      • Hyeok Choi, Kyesang Yoo and Dionysios D. Dionysiou, TiO2 nanoparticles and films for the fabrication of photocatalytic membranes using ionic liquid- and surfactant-based self assembling sol-gel method, (Poster Presentation) in: Proceedings of the 8thInternational Conference on Inorganic Membranes (ICIM), pp 630-634, July 18-21, 2004, Cincinnati, OH.
        {Poster Abstract} [Refereed/Juried]

      Journal Article 2003
      • Ji Hoon Kim, Hyeok Choi, Hyung-Soo Kim, Ick Tae Yeom and Gee Bong Han, Effect of PACs coagulant on permeate flux in pilot scale microfiltration system for water treatment, Journal of Korean Society on Water Quality19 (2003) 225-231.
        {Journal Article} [Refereed/Juried]

      Lecture/Speech 2003
      • Hyeok Choi, Influence of shear force on the membrane filtration performance of biological suspension, (Seminar Presentation) at the Advanced Seminar on Environmental Science and Engineering, the University of Cincinnati, November 13, 2003, Cincinnati, OH.
        {Lecture/Speech} [Non-refereed/non-juried]

      Poster Abstract 2003
      • Hyeok Choi, Maria Antoniou and Dionysios D. Dionysiou, The potential of UV/TiO2 photocatalysis for the destruction of toxins in air and water and its implication as a “green” remediation technology, (Poster Presentation) at the International Ultraviolet Association Specialty Conference on Ultraviolet Air Treatment (IUVA), November 5-6, 2003, Chicago, IL.
        {Poster Abstract} [Refereed/Juried]

      Journal Article 2002
      • Ji Hoon Kim, Hyeok Choi , Kwan Yeop Kim, Hyung-Soo Kim and Jin Mo Kim, Reservoir water treatment by membrane separation, Journal of Korean Society on Water Quality18 (2002) 95-101.
        {Journal Article} [Refereed/Juried]

      Conference Proceeding 2001
      • Ji Hoon Kim, Hyeok Choi, Kwan Yeop Kim and Hyung-Soo Kim, Study on the relation between permeate flux and concentration in membrane separation system, (Oral Presentation) in: Proceedings of the Conference of Korean Society of Civil Engineers (KSCE), pp 139-142, 2001, Seoul, Korea.
        {Conference Proceeding} [Refereed/Juried]

      Journal Article 2000
      • Hyeok Choi, Young Woo Seo, Hyung Soo Kim, Jong Seong Im and Sun Jin Hwang, Evaluation of system operated by feed-and-discontinuous mode using tubular type ultrafiltration membrane for water treatment, Journal of Korean Society of Environmental Engineers22 (2000) 2187-2195.
        {Journal Article} [Refereed/Juried]

      Conference Proceeding 1999
      • Hoon Kim, Jong Hwan Lee, Hyeok Choi, and Hyung-Soo Kim, Joon Yong Sung and Seong Hoon Yoon, Study on operation parameters in biological nitrogen removal using anoxic/aerobic process conjugated submerged membrane, (Oral Presentation) in: Proceedings of the Conference of Korean Society of water and wastewater (KSWW), pp 94-101, 1999, Seoul, Korea.
        {Conference Proceeding} [Refereed/Juried]
      1999
      • Hyeok Choi, Hoon Kim, Jong Hwan Lee, Hyung-Soo Kim, Jong Seong Im, Variation of permeate flux according to concentration and estimation of degree of concentration of retained materials in UF tubular membrane system operated by feed-and-bleed mode for water treatment, (Oral Presentation) in: Proceedings of the Conference of Korean Society of water and wastewater (KSWW), pp 82-88, 1999, Seoul, Korea.
        {Conference Proceeding} [Refereed/Juried]

Projects

  • 2014
    • Sept 2014 to Aug 2016 Solar-Driven Photocatalytic Decomposition of Lethal Algal Toxins in Texas Water Resources
      Solar-Driven Photocatalytic Decomposition of Lethal Algal Toxins in Texas Water Resources (Texas Higher Education Coordinating Board, Norman Hackerman Advanced Research Program; 9/1/2014-8/31/2016; $140,847 including UTA costshare; PI: Dr. Choi): The increasing occurrence of harmful algal blooms (HABs) alarms water and health authorities and general public in Texas. Some algae produce and release lethal biological toxins such as microcystins, the most powerful poisons. Consequently, removal of biological toxins in water resources is important, if feasible, on-site and in real-time with minimal efforts, less chemicals, and low energy inputs. Such an on-site treatment strategy also provides a systematic tool to protect living creatures and ecosystem in HAB sites. The goal of this project is to pioneer a high efficiency visible light-activated TiO2 photocatalytic process to decompose biological toxins in water resources on-site under solar radiation.
      Role: Principal Investigator PI: Hyeok Choi
  • 2013
    • Mar 2013 to Feb 2016 In Situ Sensing System for the Selective and Sensitive Detection of Biological Toxins in HABs
      In Situ Sensing System for the Selective and Sensitive Detection of Biological Toxins in HABs (NSF/GEO/OCE;3/15/2013-2/29/2016)  The increasing occurrence of harmful algal blooms (HABs) in water resources worldwide is alarming the environmental and health authorities because of their potential to release lethal biological toxins, in particular,microcystins (MCs) produced from cyanobacterial HABs. Current monitoring methods employing on-site sampling followed by in-lab analysis of HAB toxins (direct micro-observation) are neither sustainable nor practical to meet the vast spatial and temporal measuring need. Alternatively, remote sensing approaches based on identifying standard color products from satellite images (indirect macro-observation) are useful for monitoring general algal bloom activities. However, such color products are neither specific to HABs nor necessarily indicative of toxin release. As a result, it is important to determine the toxic/non-toxic nature of algal blooms and even identify the species of HAB toxins in a more effective, sustainable, and responsive manner. In our efforts to find a complementary approach to the two different observing methods, the overall goal of this proposed study is to real-time monitor the level of MCs in situ using an innovative wireless sensor network.  
      Role: Principal Investigator PI: Hyeok Choi
  • 2012
    • Sept 2012 to July 2015 In Situ Sensing System for the Selective and Sensitive Detection of Biological Toxins in HABs
      In Situ Sensing System for the Selective and Sensitive Detection of Biological Toxins in HABs (NIH/NIEHS;09/24/2012-7/31/2015) The increasing occurrence of harmful algal blooms (HABs) in water resources worldwide is alarming the environmental and health authorities because of their potential to release biological toxins, in particular, microcystins produced from cyanobacterial HABs. Microcystins are among the most powerful natural poisons known. Exposure to microcystins can affect the number and diversity of wild animal populations, cause bioaccumulation of toxins in the tissues of fish and shellfish, and indirectly affect other organisms through the food chain and eventually humans. Methodologies for early detection or in-situ/remote sensing of outbreaks of the toxins would provide a major mechanism for reducing/preventing exposures to the toxins released by HABs. In this project, we propose to real-time monitor the level of microcystins in-situ using an innovative wireless sensor network.
      Role: Principal Investigator PI: Hyeok Choi
  • 2011
    • June 2011 to Present Integrated Treatment of Perfluoroalkyl Compounds in Groundwater
      Integrated Treatment of Perfluoroalkyl Compounds in Groundwater (The University of Texas at Arlington/Startup Fund, June. 1, 2011-N.A.) Due to their toxicity, prevalence, and persistence in the environment, perfluoroalkyl compounds (PFACs) widely used in fire retardants have attracted significant scientific, regulatory, and public interest. There is a fundamental and applied research need to develop cost-effective and practical in situ remediation technologies for groundwater contaminated with PFACs, keeping an important motto in mind, ‘flexibility and implementation of the technologies’. This study proposes an innovative idea for the integration of in situ sequestration of PFACs and their chemical decomposition. The idea is implemented by introducing, so called, reactive activated carbon (RAC) impregnated with various customized Fe nanoparticles (Fe oxides, zerovalent Fe (ZVI), palladized Fe (ZVI/Pd)). PFACs in groundwater are promptly adsorbed onto RAC and then simultaneously decomposed via various kinetics and pathways in the presence of various oxidants (oxygen (O2), hydrogen peroxide ((H2O2), persulfate (S2O82-), peroxymonosulfate (HSO5-)).
      Role: Principal Investigator PI: Hyeok Choi
    • June 2011 to May 2012 In Situ Remediation of the Trinity River in North Texas Contaminated with Polychlorinated Biphenyls
      In Situ Remediation of the Trinity River in North Texas Contaminated with Polychlorinated Biphenyls (Texas Water Resources Institute/US Geological Survey, June 1, 2011-May 31, 2012). We explore the treatment capability of the reactive activated carbon towards polychlorinated biphenyls in the Trinity river, TX.
      Role: Principal Investigator PI: Hyeok Choi
  • 2010
    • June 2010 to May 2011 Transport Characteristics of Engineered Titanium Oxide Nanoparticles in the Environment
      Transport Characteristics of Engineered Titanium Oxide Nanoparticles in the Environment (Research Enhancement Program Grant of the University of Texas at Arlington, June 1, 2010-May 31, 2011). We investigate the transport and fate of TiO2 NPs in the environment, particularly focusing on their mobility in the water-soil interphase under various reaction environments relevant in natural systems. 
      Role: Principal Investigator PI: Hyeok Choi
  • 2009
    • Sept 2009 to Present Decomposition of Pharmaceuticals and Personal Care Products Using Advanced Oxidation Technologies
      Decomposition of Pharmaceuticals and Personal Care Products Using Advanced Oxidation Technologies (The University of Texas at Arlington/Startup Fund, Sep. 1, 2009-N.A.) The presence of persistent and toxic pharmaceuticals and personal care products (PPCPs) in water resources has generated considerable scientific, regulatory, and public interests, requiring the development of cost-effective technologies for PPCP treatment. Among many treatment technologies, special attention has been given to advanced oxidation technologies (AOTs) where extremely strong and transitional radical species such as hydroxyl radicals (HRs) and sulfate radicals (SRs) are generated to attack organic contaminants. In this study, we investigate destruction of various PPCPs, including triclosan, sulfamethoxazole, and acetaminophen, using HRs and SRs-based AOTs.
      Role: Principal Investigator PI: Hyeok Choi
    • Sept 2009 to Aug 2010 A Carbon Extraction Process for Converting Southwestern Lignite to JP-8
      A Carbon Extraction Process for Converting Southwestern Lignite to JP-8 (Advanced Research Projects Agency of US Department of Defense, September 1, 2009-August 31, 2010). We propose the use of a unique direct liquefaction technique that uses a hydrogenated solvent to produce heavy crude from lignite coal.
      Role: Co-PI PI: Richard Billo

Support & Funding

This data is entered manually by the author of the profile and may duplicate data in the Sponsored Projects section.
    • May 2017 to Present Concept Development of Chemical Treatment Strategy for PFOS-Contaminated Water sponsored by  - $125168
    • Sept 2014 to Aug 2016 Solar-Driven Photocatalytic Decomposition of Lethal Algal Toxins in Texas Water Resources sponsored by  - $140874
    • Mar 2013 to Feb 2016 In Situ Sensing System for the Selective and Sensitive Detection of Biological Toxins in HABs sponsored by  - $386189
    • Sept 2012 to July 2015 In Situ Sensing System for the Selective and Sensitive Detection of Biological Toxins in HABs sponsored by  - $175541
    • June 2011 to May 2012 In Situ Remediation of the Trinity River in North Texas Contaminated with Polychlorinated Biphenyls sponsored by  - $5000
    • June 2010 to May 2011 Transport Characteristics of Engineered Titanium Oxide Nanoparticles in the Environment sponsored by  - $3971
    • Sept 2009 to Aug 2010 A Carbon Extraction Process for Converting Southwestern Lignite to JP-8 sponsored by  - $545837

Students Supervised

  • Doctoral
    • Aug 2012
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      Prince Nfodzo

      Dissertation Title: Decomposition of Triclosan with Sulfate Radicals Generated by the Interaction of Transition Metals with Common Oxidants

      Selected for The Graduate Dean’s Dissertation Fellowship

      Graduation: August 2012

    • Present
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      Research Topic: Integrating Adsorptive, Oxidative, and Reductive Pathways for the Versatile Treatment of Recalcitrant Organic Contaminants

      Status: Joined in August 2011, passed comprehensive exam (proposal defense) on May 12, 2016, and expected to graduate in 2017. 

    • Present
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      Research Topic: In Situ Sensing of Biological Toxins in Harmful Algal Blooms & Sonication-Assisted Understanding of Aggregation and Segregation Behaviors of TiO2 Nanomaterials

      Status: Joined in August 2012, passed comprehensive exam (proposal defense) on November 8, 2014, and expected to graduate in 2016. 

    • Present

      Joined in August 2015.

    • Present

      Research Topic: Enhancing the Selective Oxidation of Target Chemicals on Novel TiO2 Photocatalysts

      Status: Joined in June 2013, Passed Comprehensive Exam (Proposal Defense) on May 11, 2016, and Expected to Graduate in 2016

  • Master's
    • Dec 2015
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      Thesis Topic: Interpreting Unique Colloidal Response of TiO2 Nanomaterials to Controlled Sonication for Understanding their Assembly Configuration

      Graduation: December 2015.

    • Dec 2014
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      Thesis Topic: Adsorption of Metals in Flu-Gas Desulfurization Wastewater by Iron-Impregnated Activated Carbon

      Graduation: December, 2014

    • May 2013
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      Thesis Title: Enhancing Selective Decomposition of Ibuprofen onto Porous TiO2 Nanoparticle

      Graduation: May 2013

    • May 2014
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      Masters Project: Understanding Advanced Oxidation Combined with Chemical Reduction for the Accelerated Decomposition of Recalcitrant Organic Chemicals in Water

      Graduation: May 2014 

    • Dec 2011
      thumbnail
    • Present

      Joined in January 2015

    • Present

      Joined in August 2015.

    • Present

      Joined in January 2015

    • Present

      Joined in November 2012.

Courses

      • CE 5322-001 ADVANCED PHYSICAL-CHEMICAL PROCESSES

        The course represents the fundamentals and applications of various advanced physical and chemical unit operations and processes for controlling drinking water quality. The course will cover i) general overview on the standard, regulations, and goals of drinking water quality, ii) general discussion on organic chemistry for environmental studies, and iii) detailed discussion of the theory, design, and operation of advanced physical and chemical unit processes which have not been discussed in the previous courses (CE 5318 and CE 5319, Physical-Chemical Processes I and II), including but not limited to, sorption, centrifugation, osmotic pressure, membrane separation, chemical oxidation and advanced oxidation, UV technology, and disinfection.

        Spring - Regular Academic Session - 2017 Download Syllabus Contact info & Office Hours
      • CE 5322-101 ADVANCED PHYSICAL-CHEMICAL PROCESSES

        The course represents the fundamentals and applications of various advanced physical and chemical unit operations and processes for controlling drinking water quality. The course will cover i) general overview on the standard, regulations, and goals of drinking water quality, ii) general discussion on organic chemistry for environmental studies, and iii) detailed discussion of the theory, design, and operation of advanced physical and chemical unit processes which have not been discussed in the previous courses (CE 5318 and CE 5319, Physical-Chemical Processes I and II), including but not limited to, sorption, centrifugation, osmotic pressure, membrane separation, chemical oxidation and advanced oxidation, UV technology, and disinfection.

        Spring - Regular Academic Session - 2017 Download Syllabus Contact info & Office Hours
      • CE 5318-001 PHYSICAL-CHEMICAL PROCESSES I

        This course covers the basics of water quality modeling that will be used in subsequent environmental engineering courses and the physical processes used in water and air quality control including a discussion of the theory, design, and operation of physical unit processes.

        Fall - Regular Academic Session - 2016 Download Syllabus Contact info & Office Hours
      • CE 5318-002 PHYSICAL-CHEMICAL PROCESSES I

        This course covers the basics of water quality modeling that will be used in subsequent environmental engineering courses and the physical processes used in water and air quality control including a discussion of the theory, design, and operation of physical unit processes.

        Fall - Regular Academic Session - 2016 Download Syllabus Contact info & Office Hours
      • CE 4351-001 PHYSICAL UNIT PROCESSES

        This course covers the basics of water quality modeling that will be used in subsequent environmental engineering courses and the physical processes used in water and air quality control including a discussion of the theory, design, and operation of physical unit processes.

        Fall - Regular Academic Session - 2016 Download Syllabus Contact info & Office Hours
      • CE 4351-002 Unit Physical Processes

        This course covers the basics of water quality modeling that will be used in subsequent environmental engineering courses and the physical processes used in water and air quality control including a discussion of the theory, design, and operation of physical unit processes.

        Fall - Regular Academic Session - 2016 Download Syllabus Contact info & Office Hours
      • CE 5317-001 Environmental Engineering Process and Analysis Lab

        The course meets for 2 hours of lecture and 3 hours of lab each week. Lectures will cover advanced analytical procedures for the analyses of air, liquid, and other wastes, including optical, chromatographic, electrical, and other instrumental methods of analysis. Lectures will also review the basics of physical/chemical processes. In the laboratory, students will demonstrate and analyze basic reactor types (CSTR, plug flow, and reactors in series) and kinetics, as well as environmental engineering processes (physical/chemical) for treatment of contaminants, including gas transfer, adsorption, advanced oxidation processes, and membrane separation. 

        Fall - Regular Academic Session - 2016 Download Syllabus Contact info & Office Hours
      • CE 5317-101 ENVIRONMENTAL ENGINEERING PROCESS AND ANALYSIS LAB

        The course meets for 2 hours of lecture and 3 hours of lab each week. Lectures will cover advanced analytical procedures for the analyses of air, liquid, and other wastes, including optical, chromatographic, electrical, and other instrumental methods of analysis. Lectures will also review the basics of physical/chemical processes. In the laboratory, students will demonstrate and analyze basic reactor types (CSTR, plug flow, and reactors in series) and kinetics, as well as environmental engineering processes (physical/chemical) for treatment of contaminants, including gas transfer, adsorption, advanced oxidation processes, and membrane separation. 

        Fall - Regular Academic Session - 2016 Download Syllabus Contact info & Office Hours
      • CE 5322-001 Advanced Physical-Chemical Processes

        The course represents the fundamentals and applications of various advanced physical and chemical unit operations and processes for controlling drinking water quality. The course will cover i) general overview on the standard, regulations, and goals of drinking water quality, ii) general discussion on organic chemistry for environmental studies, and iii) detailed discussion of the theory, design, and operation of advanced physical and chemical unit processes which have not been discussed in the previous courses (CE 5318 and CE 5319, Physical-Chemical Processes I and II), including but not limited to, sorption, centrifugation, osmotic pressure, membrane separation, chemical oxidation and advanced oxidation, UV technology, and disinfection.

        Spring - Regular Academic Session - 2016 Download Syllabus Contact info & Office Hours
      • CE 5322-002 Advanced Physical-Chemical Processes

        The course represents the fundamentals and applications of various advanced physical and chemical unit operations and processes for controlling drinking water quality. The course will cover i) general overview on the standard, regulations, and goals of drinking water quality, ii) general discussion on organic chemistry for environmental studies, and iii) detailed discussion of the theory, design, and operation of advanced physical and chemical unit processes which have not been discussed in the previous courses (CE 5318 and CE 5319, Physical-Chemical Processes I and II), including but not limited to, sorption, centrifugation, osmotic pressure, membrane separation, chemical oxidation and advanced oxidation, UV technology, and disinfection.

        Spring - Regular Academic Session - 2016 Download Syllabus Contact info & Office Hours
      • CE 5317-001 Environmental Engineering Process and Analysis Lab

        The course meets for 2 hours of lecture and 3 hours of lab each week. Lectures will cover advanced analytical procedures for the analyses of air, liquid, and other wastes, including optical, chromatographic, electrical, and other instrumental methods of analysis. Lectures will also review the basics of physical/chemical processes. In the laboratory, students will demonstrate and analyze basic reactor types (CSTR, plug flow, and reactors in series) and kinetics, as well as environmental engineering processes (physical/chemical) for treatment of contaminants, including gas transfer, adsorption, advanced oxidation processes, and membrane separation. 

        Fall - Regular Academic Session - 2015 Download Syllabus Contact info & Office Hours
      • CE 5317-101 Environmental Engineering Process and Anlaysis Lab

        The course meets for 2 hours of lecture and 3 hours of lab each week. Lectures will cover advanced analytical procedures for the analyses of air, liquid, and other wastes, including optical, chromatographic, electrical, and other instrumental methods of analysis. Lectures will also review the basics of physical/chemical processes. In the laboratory, students will demonstrate and analyze basic reactor types (CSTR, plug flow, and reactors in series) and kinetics, as well as environmental engineering processes (physical/chemical) for treatment of contaminants, including gas transfer, adsorption, advanced oxidation processes, and membrane separation. 

        Fall - Regular Academic Session - 2015 Download Syllabus Contact info & Office Hours
      • CE 4351-001 PHYSICAL UNIT PROCESSES

        This course covers the basics of water quality modeling that will be used in subsequent environmental engineering courses and the physical processes used in water and air quality control including a discussion of the theory, design, and operation of physical unit processes.

        Fall - Regular Academic Session - 2015 Download Syllabus Contact info & Office Hours
      • CE 4351-002 Physical Unit Processes

        This course covers the basics of water quality modeling that will be used in subsequent environmental engineering courses and the physical processes used in water and air quality control including a discussion of the theory, design, and operation of physical unit processes.

        Fall - Regular Academic Session - 2015 Download Syllabus Contact info & Office Hours
      • CE 5318-001 PHYSICAL-CHEMICAL PROCESSES I

        This course covers the basics of water quality modeling that will be used in subsequent environmental engineering courses and the physical processes used in water and air quality control including a discussion of the theory, design, and operation of physical unit processes.

        Fall - Regular Academic Session - 2015 Download Syllabus Contact info & Office Hours
      • CE 5318-002 PHYSICAL-CHEMICAL PROCESSES I

        This course covers the basics of water quality modeling that will be used in subsequent environmental engineering courses and the physical processes used in water and air quality control including a discussion of the theory, design, and operation of physical unit processes.

        Fall - Regular Academic Session - 2015 Download Syllabus Contact info & Office Hours
      • CE 6325-001 ADVANCED PHYSICAL-CHEMICAL PROCESSES

        The course represents the fundamentals and applications of various advanced physical and chemical unit operations and processes for controlling drinking water quality. The course will cover i) general overview on the standard, regulations, and goals of drinking water quality, ii) general discussion on organic chemistry for environmental studies, and iii) detailed discussion of the theory, design, and operation of advanced physical and chemical unit processes which have not been discussed in the previous courses (CE 5318 and CE 5319, Physical-Chemical Processes I and II), including but not limited to, sorption, centrifugation, osmotic pressure, membrane separation, chemical oxidation and advanced oxidation, UV technology, and disinfection.

        Spring - Regular Academic Session - 2015 Download Syllabus Contact info & Office Hours
      • CE 6325-002 ADVANCED PHYSICAL-CHEMICAL PROCESSES

        The course represents the fundamentals and applications of various advanced physical and chemical unit operations and processes for controlling drinking water quality. The course will cover i) general overview on the standard, regulations, and goals of drinking water quality, ii) general discussion on organic chemistry for environmental studies, and iii) detailed discussion of the theory, design, and operation of advanced physical and chemical unit processes which have not been discussed in the previous courses (CE 5318 and CE 5319, Physical-Chemical Processes I and II), including but not limited to, sorption, centrifugation, osmotic pressure, membrane separation, chemical oxidation and advanced oxidation, UV technology, and disinfection.

        Spring - Regular Academic Session - 2015 Download Syllabus Contact info & Office Hours
      • CE 5316-001 Current Topics in Environmental Engineering

        The course provides graduate students with background, knowledge, technology, theory, and application on some ‘emerging topics’ in environmental engineering fields, including water pollution, water and wastewater treatment, post-treatment issues, remediation of contaminated groundwater, soil and sediment, anaerobic processes for waste treatment and energy generation, life cycle analysis, and energy and the environment. Introduction will be first provided to each selected topic and then selected articles will be discussed. 

        Spring - Regular Academic Session - 2015 Download Syllabus Contact info & Office Hours
      • CE 5316-002 Current Topics in Environmental Engineering

        The course provides graduate students with background, knowledge, technology, theory, and application on some ‘emerging topics’ in environmental engineering fields, including water pollution, water and wastewater treatment, post-treatment issues, remediation of contaminated groundwater, soil and sediment, anaerobic processes for waste treatment and energy generation, life cycle analysis, and energy and the environment. Introduction will be first provided to each selected topic and then selected articles will be discussed. 

        Spring - Regular Academic Session - 2015 Download Syllabus Contact info & Office Hours
      • CE 4351-001 Physical Unit Processes

        This course covers the basics of water quality modeling that will be used in subsequent environmental engineering courses and the physical processes used in water and air quality control including a discussion of the theory, design, and operation of physical unit processes.

        Fall - Regular Academic Session - 2014 Download Syllabus Contact info & Office Hours
      • CE 5318-001 Physical-Chemical Processes I

        This course covers the basics of water quality modeling that will be used in subsequent environmental engineering courses and the physical processes used in water and air quality control including a discussion of the theory, design, and operation of physical unit processes.

        Fall - Regular Academic Session - 2014 Download Syllabus Contact info & Office Hours
      • CE 5318-002 Physical-Chemical Processes I

        This course covers the basics of water quality modeling that will be used in subsequent environmental engineering courses and the physical processes used in water and air quality control including a discussion of the theory, design, and operation of physical unit processes.

        Fall - Regular Academic Session - 2014 Download Syllabus Contact info & Office Hours
      • CE 5317-001 Environmental Engineering Process and Analysis Lab

        The course meets for 2 hours of lecture and 3 hours of lab each week. Lectures will cover advanced analytical procedures for the analyses of air, liquid, and other wastes, including optical, chromatographic, electrical, and other instrumental methods of analysis. Lectures will also review the basics of physical/chemical processes. In the laboratory, students will demonstrate and analyze basic reactor types (CSTR, plug flow, and reactors in series) and kinetics, as well as environmental engineering processes (physical/chemical) for treatment of contaminants, including gas transfer, adsorption, advanced oxidation processes, and membrane separation. 

        Fall - Regular Academic Session - 2014 Download Syllabus Contact info & Office Hours
      • CE 5317-101 Environmental Engineering Process and Analysis Lab

        The course meets for 2 hours of lecture and 3 hours of lab each week. Lectures will cover advanced analytical procedures for the analyses of air, liquid, and other wastes, including optical, chromatographic, electrical, and other instrumental methods of analysis. Lectures will also review the basics of physical/chemical processes. In the laboratory, students will demonstrate and analyze basic reactor types (CSTR, plug flow, and reactors in series) and kinetics, as well as environmental engineering processes (physical/chemical) for treatment of contaminants, including gas transfer, adsorption, advanced oxidation processes, and membrane separation. 

        Fall - Regular Academic Session - 2014 Download Syllabus Contact info & Office Hours
      • CE 5316-001 Current Topics in Environmental Engineering

        The course provides graduate students with background, knowledge, technology, theory , and application on some ‘emerging topics’ in environmental engineering fields, including water pollution, water and wastewater treatment, post-treatment issues, remediation of contaminated groundwater, soil and sediment, anaerobic processes for waste treatment and energy generation, life cycle analysis, and energy and the environment. Introduction will be first provided to each selected topic and then selected articles will be discussed. 

        Spring - Regular Academic Session - 2014 Download Syllabus Contact info & Office Hours
      • CE 5316-002 Current Topics in Environmental Engineering

        The course provides graduate students with background, knowledge, technology, theory , and application on some ‘emerging topics’ in environmental engineering fields, including water pollution, water and wastewater treatment, post-treatment issues, remediation of contaminated groundwater, soil and sediment, anaerobic processes for waste treatment and energy generation, life cycle analysis, and energy and the environment. Introduction will be first provided to each selected topic and then selected articles will be discussed. 

        Spring - Regular Academic Session - 2014 Download Syllabus Contact info & Office Hours
      • CE 6325-001 Advanced Physical-Chemical Processes

        The course represents the fundamentals and applications of various advanced physical and chemical unit operations and processes for controlling drinking water quality. The course will cover i) general overview on the standard, regulations, and goals of drinking water quality, ii) general discussion on organic chemistry for environmental studies, and iii) detailed discussion of the theory, design, and operation of advanced physical and chemical unit processes which have not been discussed in the previous courses (CE 5318 and CE 5319, Physical-Chemical Processes I and II), including but not limited to, sorption, centrifugation, osmotic pressure, membrane separation, chemical oxidation and advanced oxidation, UV technology, and disinfection.

        Spring - Regular Academic Session - 2014 Download Syllabus Contact info & Office Hours
      • CE 6325-002 Advanced Physical-Chemical Processes

        The course represents the fundamentals and applications of various advanced physical and chemical unit operations and processes for controlling drinking water quality. The course will cover i) general overview on the standard, regulations, and goals of drinking water quality, ii) general discussion on organic chemistry for environmental studies, and iii) detailed discussion of the theory, design, and operation of advanced physical and chemical unit processes which have not been discussed in the previous courses (CE 5318 and CE 5319, Physical-Chemical Processes I and II), including but not limited to, sorption, centrifugation, osmotic pressure, membrane separation, chemical oxidation and advanced oxidation, UV technology, and disinfection.

        Spring - Regular Academic Session - 2014 Download Syllabus Contact info & Office Hours
      • CE 4351-001 Physical Unit Processes

        This course covers the basics of water quality modeling that will be used in subsequent environmental engineering courses and the physical processes used in water and air quality control including a discussion of the theory, design, and operation of physical unit processes.

        Fall - Regular Academic Session - 2013 Download Syllabus Contact info & Office Hours
      • CE 5318-001 Physical-Chemical Processes I

        This course covers the basics of water quality modeling that will be used in subsequent environmental engineering courses and the physical processes used in water and air quality control including a discussion of the theory, design, and operation of physical unit processes.

        Fall - Regular Academic Session - 2013 Download Syllabus Contact info & Office Hours
      • CE 5318-002 Physical-Chemical Processes I

        This course covers the basics of water quality modeling that will be used in subsequent environmental engineering courses and the physical processes used in water and air quality control including a discussion of the theory, design, and operation of physical unit processes.

        Fall - Regular Academic Session - 2013 Download Syllabus Contact info & Office Hours
      • CE 5317-001 Environmental Engineering Process and Analysis Lab

        The course meets for 2 hours of lecture and 3 hours of lab each week. Lectures will cover advanced analytical procedures for the analyses of air, liquid, and other wastes, including optical, chromatographic, electrical, and other instrumental methods of analysis. Lectures will also review the basics of physical/chemical processes. In the laboratory, students will demonstrate and analyze basic reactor types (CSTR, plug flow, and reactors in series) and kinetics, as well as environmental engineering processes (physical/chemical) for treatment of contaminants, including gas transfer, adsorption, advanced oxidation processes, and membrane separation.

        Fall - Regular Academic Session - 2013 Download Syllabus Contact info & Office Hours
      • CE 5317-002 Environmental Engineering Process and Analysis Lab

        The course meets for 2 hours of lecture and 3 hours of lab each week. Lectures will cover advanced analytical procedures for the analyses of air, liquid, and other wastes, including optical, chromatographic, electrical, and other instrumental methods of analysis. Lectures will also review the basics of physical/chemical processes. In the laboratory, students will demonstrate and analyze basic reactor types (CSTR, plug flow, and reactors in series) and kinetics, as well as environmental engineering processes (physical/chemical) for treatment of contaminants, including gas transfer, adsorption, advanced oxidation processes, and membrane separation.

        Fall - Regular Academic Session - 2013 Download Syllabus Contact info & Office Hours

Service to the Community

  • Volunteered
    • Jan 2004 to  Present Mentoring and Outreach Activities

      Math Tutor for Irving Math Tutoring Program, Fall of 2013 Class, Kirkwood Methodist Church, Irving, TX

      Supervisor for the American Chemical Society International-Domestic Student Team (Mr. Abolfazl Zakersalehi and Mr. Wasiu Lawal) as a representative Dallas-Fort Worth Local Section Team to participate in the summit 2012 to discuss promoting cross-cultural understanding and increasing international collaboration, November 11-17, 2012, Raleigh, NC.

      Supervisor for the Presentation and Lab Tour for Middle and High School Students on “Water Treatment and Environmental Challenges” at UT-Arlington Engineering Saturday Outreach Activity; September 22, 2012.

      Mentor in the American Chemical Society Science Coaches Program to work with science teachers (Mr. Blake Wade in Kennedale High School) to offer outstanding learning opportunities for middle and high school students in science since 2011. My Ph.D. student, Wasiu Lawal is directly involved in the activity.

      Supervisor for the Presentation and Lab Tour for Middle and High School Students on “Water Treatment and Environmental Challenges” at UT-Arlington Engineering Saturday Outreach Activity; November 12, 2011.

      Mentor for Amber Yeary (Wright State University) and Daniel Breetz (University of Cincinnati) in Summer 2006 National Science Foundation (NSF) Research Experiences for Undergraduates (REU) Program, June 2006–September 2006.

      Mentor for Amber Yeary and Jelynn Stinson (Wright State University) in Collaboration with Prof. Suzanne Lunsford in Chemistry Department at the Wright State University; February 2006 – November 2006.

      Mentor for Anna C. Sofranko (University of Virginia) in Summer 2005 National Science Foundation (NSF) Research Experiences for Undergraduates (REU) Program for Membrane Science and Technology; June 2005–August 2005.

      Mentor for Brian Yates, Daniel Breetz, and Elizabeth Myre (University of Cincinnati) in National Science Foundation-Funded Project on “Bio-templated Synthesis of TiO2 Nanoparticles”; September 2004 – August 2005.

      Mentor for Carol Kao (Sycamore High School) in Summer 2004 Apprenticeship Program of US Environmental Protection Agency and University of Cincinnati for Environmental Lab Experience; June 2004 – August 2004.

Service to the Profession

  • Appointed
    • Jan 2013 to  Present Editorial Board

      Associate Editor of ASCE Journal of Environmental Engineering (American Society of Civil Engineers), 2015-Current.

      Associate Editor of Water Treatment Technology (de Gruyter), 2014.

      The Editorial Board of Reviews in Environmental Science and Bio/Technology (Springer), 2014-Current.

      The Editorial Board of AIMS Environmental Science (American Institute of Mathematical Sciences), 2013-Current.

      The Editorial Board of Computational Water, Energy, and Environmental Engineering (Scientific Research Publishing), 2012-Current.

    • Jan 2009 to  Present Proposal Review

      National Science Foundation (NSF): Partnerships for International Research and Education (PIRE) Program, Facilitating Research at Primary Undergraduate Institutions (RUI) Program, Environmental Engineering Program

      National Institutes of Health (NIH): Small Business Innovation Research (SBIR) and Small Business Technology Transfer (STTR) Program

      Environmental Protection Agency (EPA): Science to Achieve Results (STAR) Program

      US Geological Survey (USGS): National Institutes for Water Resource (NIWR) Program

      Oak Ridge Associated Universities (ORAU): National Aeronautics and Space Administration (NASA) Postdoctoral Program (NPP).

      Natural Environment Research Council of UK (UK NERC): Environmental Microbiology and Human Health Program (MHH)

    • Jan 2009 to  Present Book Review

      Photocatalysis: Fundamentals and Perspectives (Eds. J. Schneider, D. Bahnemann, J. Ye, G. Li Puma, D. Dionysiou, Royal Society of Chemistry, 2015 (Book Chapter Review)

      PAHs and Phenols in Wastewater Treatment (Ed. A. Forsgren), Taylor & Francis/CRC Press, 2014 (Book Proposal Review)

      Water Purification Using Heterogeneous Nanomaterial-Based Photocatalysis (Eds. Pawar and Lee), Elsevier, 2014 (Book Proposal Review)

      Nanotechnology for Water and Wastewater Treatment (Eds. P. Lens, J. Virkutyte, V. Jegatheesan, Seung Hyun Kim, S. Al-Abed), International Water Association, 2013. (Book Chapters Review)

    • Jan 2007 to  Present Journal Article Review

      Environmental Core: AIMS Environmental Science;Applied Catalysis A: General; Applied Catalysis B: Environment; Bioresource Technology; CLEAN-Soil, Air, Water; Current Advances in Environmental Science; Desalination; Desalination and Water Treatment; Energy and Environmental Science; Environmental Engineering Science; Environmental Health Perspectives; Environmental Science: Nano; Environmental Science and Pollution Research; Environmental Science and Technology; International Journal of Environmental Science and Technology; International Journal of Environment and Waste Management; Journal of Advanced Oxidation Technologies; Journal of Environmental Engineering; Journal of Environmental Management; Journal of Hazardous Materials; Journal of Water and Health; Reviews in Environmental Science and Bio/Technology; Sustainable Chemistry and Engineering; Water, Air, and Soil Pollution; Water Environment Research; Water Research; Water Science and Technology; 

      Chemical and Materials Interdisciplinary; Advanced Materials; American Institute of Chemical Engineers Journal; American Mineralogist; Applied Catalysis A: General; Applied Materials and Interfaces; Applied Surface Science; Biomacromolecules; Catalysis Communications; Catalysis Science and Technology; Catalysis Today; Chemical Engineering Communications; Chemical Engineering Journal; Chemical Journals; Chemical Engineering Research and Design; Chemistry of Materials; Crystal Growth and Design; Industrial and Engineering Chemistry Research; International Journal of Photoenergy; Journal of Alloys and Compounds; The Journal of the American Ceramic Society; Journal of Materials Science; Journal of Membrane Science; Journal of Photochemistry and Photobiology A; Journal of Physical Chemistry B; Journal of Surface and Interface of Materials; Journal of the Taiwan Institute of Chemical Engineers; Langmuir, Materials Chemistry and Physics; Materials Chemistry and Physics; Materials and Design; Materials Research Bulletin; Materials Science and Engineering B; Microporous and Mesoporous Materials; Molecules; Powder Technology; Reaction Kinetics and Catalysis Letters; Reaction Kinetics, Mechanisms and Catalysis; Recent Patents on Materials Science; Science of Advanced Materials; Separation and Purification Reviews; Separation and Purification Technology; Separation Science and Technology; Surface and Coatings Technology; 

      Nanotechnology:Journal of Nano Research;Journal of Nanomaterials; Journal of Nanoparticle Research; Journal of Nanoscience and Nanotechnology

    • Jan 2009 to  Present Conference Session Chaired

      Session Co-chair, Development of Nano Devices and Nanotechnologies for Environmental Monitoring and Remediation at the International Chemical Congress of Pacific Basin Societies (PACIFICHEM), December 15-20, 2015, Honolulu, HW, USA.

      Session Chair of Advanced Oxidation Technologies: Degradation of Emerging and Persistent Contaminants II, The 19th International Conference on Advanced Oxidation Technologies for Water, Air and Soil, November 17-21, 2013, San Diego, CA, USA.

      Session Chair of In-Situ Chemical Oxidation, The 18th International Conference on Advanced Oxidation Technologies for Water, Air and Soil, November 11-15, 2012, Jacksonville, FL, USA.

      Session Chair of Environmental Applications-Advanced Oxidation Technologies, The 1st International Conference on Photocatalysis and Solar Energy Conversion: Development of Materials and Nanomaterials, May 29-31, 2012, Daejeon, South Korea.

      Session Co-Chair of Environmental Considerations of Coal-To-Liquid Process, Arkansas Joint Energy Workshop (with House Committee on Agriculture, Forestry, and Economic Development), April 27-28, 2010, University of Texas at Arlington, Arlington, TX, USA.

      Session Chair of Photocatalysis, Catalyst Synthesis and Nanotechnologies, The 15th International Conference on Advanced Oxidation Technologies for Water, Air and Soil, October 5-8, 2009, Niagara Falls, NY, USA.

  • Elected
    • Jan 2009 to  Present Conference Organized

      Organizing Committee, Development of Nano Devices and Nanotechnologies for Environmental Monitoring and Remediation at the International Chemical Congress of Pacific Basin Societies (PACIFICHEM), December 15-20, 2015, Honolulu, HW, USA.

      International Organizing Committee, The 19th International Conference on Advanced Oxidation Technologies for Water, Air and Soil, November 17-21, 2013, San Diego, CA, USA.

      International Organizing Committee, The 18th International Conference on Advanced Oxidation Technologies for Water, Air and Soil, November 11-15, 2012, Jacksonville, FL, USA.

      Seminar Host, Prof. Navid Saleh in University of South Carolina “Aggregation Behavior of Nanomaterials in Environmental and Biological Conditions” Presented in Materials Science and Engineering &Civil Engineering Seminar, November 8-9, 2012, UT-Arlington, TX, USA.

      International Organizing Committee, The 17th International Conference on Advanced Oxidation Technologies for Water, Air and Soil, November 7-10, 2011, San Diego, CA, USA.

      Organizing Committee, Arkansas Joint Energy Workshop (with House Committee on Agriculture, Forestry, and Economic Development), April 27-28, 2010, University of Texas at Arlington, Arlington, TX, USA.

      International Organizing Committee, The 15th International Conference on Advanced Oxidation Technologies for Water, Air and Soil, October 5-8, 2009, Niagara Falls, NY, USA.

Service to the University

  • Elected
    • Sept 2009 to  Present Service to University

      2014-2015          The 2014-2015 Academic Program Review Team Chair (Political Science)

      2009- Present     President’s Campus Sustainability Committee

    • Sept 2009 to  Present Service to Department

      20015-Present    Environmental Engineering Area Coordinator

      2014-Present      ABET/CE Assessment and Evaluation Task Team

      2009-Present      Graduate Studies Committee

      2015-2016          Observer for the Peer Review of Teaching

      2014-2015          Search Committee Chair (Systems Administrator)

      2013-1014          Grade Grievance Committee 

  • Volunteered
    • Sept 2009 to  Present Other Services

      Freshmen Interest Group (FIG) Program at UTA, 2014-2015, Role: Mentor, Organized and lead by Dr. Lynn Peterson and Dr. Carter Tiernan

      Urban Water Institute, 2013-Current, Role: Leadership member, Organized and lead by Dr. Jean-Pierre Bardet

      Urban Environmental Analysis and Prediction for Sustainable, Cost-Effective High Density Urban Growth, 2013-Current, Role: Member, Organized and lead by Vice President, Dr. Carolyn Cason

      Hydraulic Fracturing Interest Group, 2013-Current, Role: Member, Organized and lead by Dr. Kevin Schug

Other Service Activities

  • Activities
    • Nov 2013 Workshop and Seminars Attended

      “Water and Energy Workshop” at the 2013 International Environmental Engineering Conference, June 11, 2013, Seoul, South Korea. 

      “Physical Hydraulic Modeling of Pump Station” (by Clemson Engineering Hydraulics, Inc.), February 8, 2013, CP&Y, Dallas, TX, USA.

      “NSF Day at Texas A&M University-Commerce” (by NSF), November 14, 2011, Texas A&M University at Commerce, Commerce, TX, USA.

      “Using and Managing Copyright” (by Georgia K. Harper, J.D.), November 10, 2010, University of Texas at Arlington, Arlington, TX, USA.

      “Spectroscopy Seminar Series” by Thermo Scientific, May 12, 2010, Grapevine, TX, USA.

      “Arkansas Joint Energy Workshop” (with House Committee on Agriculture, Forestry, and Economic Development), April 27-28, 2010, University of Texas at Arlington, Arlington, TX, USA.

      “How to Write a Winning NSF CAREER Proposal: A Webinar for Faculty” UT-Arlington, April 13, 2010.

      “Effective College Teaching Workshop and Cooperative Learning Workshop (by Drs. Richard M. Felder and Rebecca Brent) ” UT-Arlington, November 13-14, 2009.

      “Research and Creative Activity Support Session”, University of Texas at Arlington, November 5, 2009.

      “Research Enhancement Program Workshop” University of Texas at Arlington, October 28, 2009.

  • Community Service
    • Sep 2013 Math Tutor for Irving Math Tutoring Program, at Kirkwood Methodist Church, Irving, TX

      Math Tutor for Irving Math Tutoring Program, Fall of 2013, Spring of 2014, Fall of 2014, Spring of 2015, Fall of 2015, and Spring of 2016, Kirkwood Methodist Church, Irving, TX

  • Academic and Other Service: University of Texas at Arlington
    • Jan 2010 PE Lecturer

      Served as an Instructor for Environmental Engineering (Water and Wastewater Courses) in Professional Engineering Practices and Principles Examination in Civil Engineering, University of Texas at Arlington, 2010 Fall, 2011 Fall, 2012 Fall, and 2013 Spring.