• Name

  엄우용(Wooyong Um)

• Department

  Division of Advanced Nuclear Engineering (DANE) / Division of Environmental Science and Engineering (DESE)

• Office

  Experiment Building 1, 305

• Phone

  +82-54-279-9564

• E-mail

  wooyongum@postech.ac.kr

• Education

  • Ph.D., 2001, Aqueous Geochemistry, University of Nevada, Reno, USA
  • M.S., 1994, Geology (Geophysics), Yonsei University, Seoul, Korea
  • B.S., 1990, Geology, Yonsei University, Seoul, Korea

Career

• Professor, DANE/DESE, POSTECH, March 2017 - Present
• Research Professor at Washington State University with joint appointment: December 2015- March. 2017
• Staff Scientist V in PNNL: January 2017 - August 2017
• Visiting professor in Division of Advanced Nuclear Engineering (DANE), WCU program, Pohang University of Science and Technology (POSTECH): December 2010 - February 2017
• Senior Research Scientist II/IV in PNNL: January 2010 - December 2016
• Senior Research Scientist I in PNNL: July 2006 - December. 2009
• Adjunct Professor at Washington State University at Tricity: June 2004 - Present
• Research Scientist in PNNL: March 2004 - June 2006
• Postdoctoral Associate in PNNL: March 2002 - February 2004
• Postdoctoral Associate in Desert Research Institute (DRI): June 2001 - February 2002
• Graduate Research Assistant in Desert Research Institute (DRI): September 1998 - May 2001

Field of specialization

• Metal and radioactive wastes isolation and immobilization techniques development
• Performance assessment of low-level radioactive waste repository
• Contaminated soils characterization and remediation method development
• In situ X-ray Absorption Spectroscopy (XAS) for sorption at the soil/water interface
• Sorption and desorption studies of heavy metals and radionuclides
• Rate and mass transfer studies of solute uptake by earth materials.
• Geochemical surface complexation modeling of ion sorption/desorption
• X-ray Photoelectron Spectroscopy (XPS) for studies of surface complexes
• Pore structure and diffusion measurements using X-ray Micro-Tomography (XMT)
• Metal complex and speciation affecting on bioavailability and toxicity
• Fate and transport of metal and radionuclides (As, Se, I, Cr, U, and Tc)
• Modified zeolites or synthesis of novel nanoporous sorbents
• Reactive transport modeling of radionuclides and metals coupled with biogeochemical reactions.
• Reclamation and remediation of acid mine drainage (AMD)
• Deep geological CO2 sequestration and geochemical reaction model
• Biological remediation of contaminated soils and groundwater
• Physicochemical characterization techniques of mineral surfaces including particle size distribution, surface area, carbon contents, pore size distribution, scanning electron microscopy, x-ray diffraction, and potentiometric titrations.

Services

• 기술자문위원, 한국원자력환경 공단, 2019.1.2-2020.12.31

Publications

• Bhupendra Kumar Singh, Muhammad Asim, Zarina Salkenova, Donghun Pak, and Wooyong Um, 2024, “Engineered sorbents for selective uranium sequestration from seawater”, Environmental Science and Technology, Water, 4(2), 325-345.
• Mahdi Bakhtiari, Nam-Suk Jung, Wooyong Um, and Hee-Seok Lee, 2023, “Monte Carlo study of an electron-based neutron source for Bragg edge imaging”, Nucler Science and Engineering, 198(2), 461-475.
• Jongkul Park, Jinmo Ahn, Jaeeun Kang, Hyojoo Kim, Jueun Kim, Bhupendra Kumar Singh, and Wooyong Um, 2023, “Sorption and mobility of radioactive Ni in Wolsong waste repository site, South Korea”, Applied Geochemistry, 158, 105810.
• Mahdi Bakhtiari, F. Sadeghi, H. Sato, Wooyong Um, C.H. Yim, and Hee-Seok Lee, 2023, “Microstructure and texture analysis of 304 austenitic stainless steel using Bragg edge transmission imaging”, Journal of Applied Crystallography, 56, 1403-1415.
• Byoungkwan Kim, Jaehyuk Kang Younglim Shin, and Wooyong Um, 2023, “Waste acceptance criteria testings of a phosphate-based geopolymer waste form to immobilize radioactive borate waste”, Journal of Nuclear Materials, 586, 154671.
• Byoungkwan Kim, Jaehyuk Kang Younglim Shin, Tae-min Yeo, Jong Heo, and Wooyong Um, 2023, “Effect of Si/Al molar ratio and curing temperatures on the immobilization of radioactive borate waste in metakaolin-based geopolymer waste form”, Journal of Hazardous Materials, 458, 131884.
• Younglim Shin, Byungkwan Kim, Jaehyuk Kang, Hyun-min Ma, and Wooyong Um, 2023, “Estimation of radionuclides leaching characteristics in different sized geopolymer waste forms with simulated spent ion-exchange resin”, Nuclear Engineering and Technology, 55, 3617-3627.
• Dawoon Jeong, Min Hoon Baik, Euo Chang Jung, Myoung-Soo Ko, Wooyong Um, and Ji-Hun Ryu, 2023, “Potential of indigenous bacteria driven U(VI) reduction under relevant deep geological repository (DGR) conditions”, Environmental Pollution, 329, 121674.
• Hye-Ryun Cho, Sangki Cho, Jueun Kim, Sangsoo Han, Hee-Kyung Kim, Wooyong Um, 2023, “Dissolution Behaviors of PuO2(cr) in Natural Waters”, Frontiers In Nuclear Engineering, FNUEN-02-1118594, doi: 10.3389/fnuen.2023.1118594
• Bhupendra Kumar Singh, Nurul Syiffa Mahzan, Nur Shahidah Abdul Rashid, Samiratu Atibun Isa, Muhammad Aamir Hafeez, Sarah Saslow, Guohui Wang, and Wooyong Um, 2023, “Design and Application of Materials for Sequestration and Immobilization of 99Tc Originating from the Nuclear Waste Industry”, Environmental Science and Technology, 57, 6776-6798.
• Zhiliang Chen, Peng Zhang, Kevin G. Brown, Hans A. van der Sloot, Johannes C.L. Meeussen, Andrew C. Garrabrants, Rossane C. Delapp, Wooyong Um, David S. Kosson, 2023, “Evaluating the impact of drying on leaching from a solidified/stabilized waste using a monolithic diffusion model”, Waste Management, 165, 27-39.
• Nur Shahidah Abdul Rashid, Wooyong Um, Ibrahim Ijang, Khoo Kok Siong, Bhupendra Kumar Singh, Nurul Syiffa Mahzan, Syazwani Mohd Fadzil, Nur Syamimi Diyana Rodzi, and Aina Shafinas Mohamad Nasir, 2023, “Acute oral toxicity and bioavailability of uranium and thorium in contaminated soil”, Nuclear Engineering and Technology, 55, 1460-1467.
• Hyojoo Kim, Bhupendra Kumar Singh, Wooyong Um, 2023, “Tritium separation from radioactive wastewater by hydrogen isotope-selective exchange of hydrogen-bonded fluorine”, Journal of Industrial and Engineering Chemistry, 121, 264-274.
• Jaeeun Kang, Ina Park, Ji Hoon Shim, Duck Young Kim, and Wooyong Um, 2023, “Prediction of stable radon fluoride molecules and geometry optimization using first-principle calculations, Scientific Reports, 13, 2898, https://doi.org/10.1038/s41598-023-29313-5
• Muhammad Aamir Hafeez, Bhupendra Kumar Singh, Seok Hoon Yang, Jueun Kim, Byoungkwan Kim, Younglim Shin, and Wooyong Um, 2023, “Recent advances in Fenton-like treatment of radioactive ion exchange resins”, Chemical Engineering Journal Advances, 14, 100461.
• Jae-Young Pyo, Wooyong Um, and Jong Heo, 2023, “Influence of MnO and ZnO on molybdate crystallization in borosilicate glass”, Journal of Nuclear Materials, 576, 154273.
• Bhupendra Kumar Singh, Jueun Kim, Donghun Pak, Kyungwon Kim, and Wooyong Um, 2023, “Technetium (Tc)/Rhenium (Re) Solubility and Leaching Behavior from Waste Forms: An Overview”, Frontiers Nuclear Engineering (Front. Nucl. Eng.), FNUEN-01-1112080, doi: 10.3389/fnuen.2022.1112080.
• Walling, S.A., Gardner, L.J., Prentice, D.P., Wilkins, M.C.D., Hammad, A., Um, W., Corkhill, C.L., Hyatt, N.C., 2023. Stability of SrCO3 within composite Portland-slag cement blends, Cement and Concrete Composites, 135(1), 104823.
• Seokju Hong and Wooyong Um, 2023, “Decontamination of neutron-activated radioactive concrete waste by separating Eu, Co, Fe, and Mn-containing sand particles using dense medium separation”, Journal of Hazardous Materials, 443, 130183.
• In-Gyu Song, Yu-Gyeong Kang, Jae-Hwan Kim, Hakwon Yoon, Jun-tae Kim, Wooyong Um, Yoon-Seok Chang, 2023, “Assessment of sulfidated nanoscale zerovalent iron for in-situ remediation of cadmium-contaminated acidic groundwater near zinc smelter”, Journal of Hazardous Materials, 441, 129915.
• Byoungkwan Kim, Jaehyuk Kang Younglim Shin, Tae-min Yeo, and Wooyong Um, 2022, “Immobilization mechanism of radioactive borate waste in phosphate-based geopolymer waste forms”, Cement and Concrete Composites, 161, 106959.
• Juhyeok Lee, Bhupendra Kumar Singh, M. Aamir Hafeez, Kyeongseok Oh, and Wooyong Um, 2022, “Comparative study of PMS oxidation with Fenton oxidation as an advanced oxidation process for Co-EDTA decomplexation”, Chemosphere, 300, 134494.
• Junkyu Park, Sungkyum Kim, Jinsu Kim, Young-seek Yoon, and Wooyong Um, 2022, “Heat, economic and multi-path safety (HEMPS) management on co-generation of hydrogen and sulfuric acid through modified sulfur-iodine cycle”, Journal of Environmental Chemical Engineering,10, 107566.
• Mumtaz Khan, Wooyong Um, Sangsoo Han, Jaehyuk Kang, Abdul Jabbar, Muhammad Adnan Iqbal, 2022. “Kinetics and m echanism of rhenium-ethylenediaminetetraacetic acid (Re(IV)-EDTA) complex degradation; For 99Tc-EDTA degradation in the natural environment”, Environmental Technology and Innovation, 27, 102492.
• Samiratu Atibun Isa, Muhammad Aamir Hafeez, Bhupendra Kumar Singh, Sae Yun Kwon, Sungwook Choung , and Wooyong Um, 2022. “Efficient mercury sequestration from wastewaters using palm kernel and coconut shell derived biochars”, Environmental Advances, 8, 100196.
• Agathe Bourchy, Sarah A. Saslow, Benjamin D. Williams, Nancy Avalos, Wooyong Um, Nathan Canfield, Lucas Sweet, Gary L. Smith, R. Matthew Asmussen, 2022, “The evolution of hydrated lime-based cementitious waste forms during leach testing leading to enhanced technetium retention”, Journal of Hazardous Materials, 430, 128507.
• Jueun Kim, Jaehyuk Kang, and Wooyong Um, 2022, “Simultaneous removal of cesium and iodate using prussian blue functionalized CoCr layered double hydroxides (PB-LDH)”, Journal of Environmental Chemical Engineering, 10(3), 107477.
• Guohui Wang, Dong-Sang Kim, Matthew J. Olszta, Mark E. Bowden, Daniel K. Schreiber, Sarah A. Saslow, Wooyong Um, Brian J. Riley, Jing Wang, and Albert A. Kruger, 2022, “Metallic technetium sequestration in nickel Core/Shell microstructure during Fe(OH)2 transformation with Ni doping”, Journal of Hazardous Materials, 425, 127779.
• Namuk Kim, Jaiil Park, Wooyong Um, and Jihye Kim, 2022, “Separation of light rare-earth elements using gas-pressurized extraction chromatography”, Mass Spectrometry Letters, 12(4), 186-191.
• Jaehyuk Kang, Ferdinan Cintron-Colon, Hyojoo Kim, Jueun Kim, Tamas Varga, Yingge Du, Odeta Qafoku, Wooyong Um, and Tatiana G. Levitskaia, 2022, “Removal of iodine (I- and IO3-) from aqueous solutions using CoAl and NiAl layered double hydroxides”, Chemical Engineering Journal, 430, 132788.
• Seongsik Nam, Wooyong Um, 2022, “Decontamination of radioactive metal wastes using underwater microwave plasma”, Journal of Environmental Chemical Engineering, Volume 10, Issue 1. (https://doi.org/10.1016/j.jece.2021.107090)
• Muhammad Aamir Hafeez, Seok Ju Hong, Junsung Jeon, Juhyeok Lee, Bhupendra Kumar Singh, Neil C. Hyatt, Samuel A. Walling, Jong Heo, Wooyong Um, 2022, “Co2+/PMS based sulfate-radical treatment for effective mineralization of spent ion exchange resin”, Chemosphere, Volume 287, Part 4, (https://doi.org/10.1016/j.chemosphere.2021.132351)
• Cevirim-Papaioannou, Ne?e, Sangsoo Han, Iuliia Androniuk, Wooyong Um, Marcus Altmaier, Xavier Gaona, 2021, “Uptake of be(Ii) by cement in degradation stage i: Wet-chemistry and molecular dynamics studies”, Minerals, 11, 1149. (https://doi.org/10.3390/min11101149)
• JunKyu Park, Jonggyu Lee, Junsung Jeon, Jinsu Kim, Young-Seek Yoon, Wooyong Um, 2021, “Process optimization and safety assessment on a pilot-scale Bunsen process in sulfur-iodine cycle”, International Journal of Hydrogen Energy, Volume 46, Issue 67, 33616-33634. (https://doi.org/10.1016/j.ijhydene.2021.07.152)
• Walling, Sam A, Um, Wooyong, Corkhill, Claire L, Hyatt, Neil C., 2021, “Fenton and Fenton-like wet oxidation for degradation and destruction of organic radioactive wastes”, npj Materials Degradation, 5 (1). 50.
• Guohui Wang, Matthew J. Olszta, Sarah A. Saslow, Dong-Sang Kim, Mark E. Bowden, Wooyong Um, Jing Wang, Albert A. KrugerA, 2021, "Focused Ion Beam-Scanning Transmission Electron Microscopy with Energy-Dispersive X-ray Spectroscopy Study on Technetium Incorporation within Iron Oxides through Fe(OH)2(s) Mineral Transformation", ACS Earth Space Chem. 5, 3, 525?534
• Zhiliang Chen, Peng Zhang, Kevin G. Brown, Janelle L. Branch, Hans A. van der Sloot, Johannes C.L. Meeussen, Rossane C. Delapp, Wooyong Um, David S. Kosson, 2021, "Development of a Geochemical Speciation Model for Use in Evaluating Leaching from a Cementitious Low Activity Waste Form", Environmental Science and Technology, 55, 13, 8642-8653. (https://pubs.acs.org/doi/abs/10.1021/acs.est.0c06227).
• N. Cevirim-Papaioannou, I. Androniuk, S. Han, N. Ait mouheb, S. Gaboreau, Wooyong Um, X. Gaona, M. Altmaier, 2021, "Sorption of beryllium in cementitious systems relevant for nuclear waste disposal: quantitative description and mechanistic understanding", Chemosphere, 282, 131094.
• Miae Kim, Kyong-Soo Hong, Jaeyoung Lee, Mirang Byeon, Yesul Jeong, Jong Hwa Kim, Wooyong Um, Hyun Gyu Kim, 2021, "Evaluating thermal stability of rare-earth containing waste forms at extraordinary nuclear disposal conditions", Nuclear Engineering and Technology, 53, 2576-2581.
• Jae-Young Pyo, Wooyong Um, Jong Heo, 2021, "Magnesium potassium phosphate cements to immobilize radioactive concrete wastes generated by decommissioning of nuclear power plants", Nuclear Engineering and Technology, 53, 2261-2267.
• Byoungkwan Kim, Juhyeok Lee, Jaehyuk Kang, and Wooyong Um, 2021, "Development of geopolymer waste form for immobilization of radioactive borate waste", Journal of Hazardous Materials, 419, 126402.
• Nurrul Assyikeen Md Jaffary, Nor Hasimah Mohamed, Khoo Kok Siong, Syazwani Mohd Fadzil, Siti Nor Syuhada Hamdan, Ungku Aida Farzana Ungku Azly, Nurul Munawwarah Aziz, Azian Hashim, Wooyong Um, 2021, "Characterization of phosphorylated natural rubber as thorium bio-adsorbent prepared by radiation-induced graft polymerization", Radiation Physics and Chemistry, 187, 109546.
• Jaeeun Kang, Bhupendra Kumar Singh, Wooyong Um, 2021, "Efficient radon removal using fluorine-functionalized natural zeolite", Journal of Environmental Radioactivity, 233, 106607.
• Guohui Wang, Matthew Olszta, Sarah Saslow, Dong-Sang Kim, Mark Bowden, Wooyong Um, Jing Wang, Albert Kruger, 2021, "FIB/STEM-EDS study on technetium incorporation within iron oxides through Fe(OH)2(s) mineral transformation", Earth and Space Chemistry, 5(3), 525.
• Seokju, Wooyong Um, 2021, "Top-Down Synthesis of NaP zeolite from natural zeolite for the higher removal efficiency of Cs, Sr, and Ni", Minerals, 11, 252.
• JunKyu Park, Seok Young Lee, JeongIn Kim, Wooyong Um, In-Beum Lee, and ChangKyoo Yoo, 2021, "Energy, safety, and absorption efficiency evaluation of a pilot-scale H2S abatement process using MDEA solution in a coke-oven gas", Journal of Environmental Chemical Engineering, 9(1), 105037.
• Jueun Kim, Bhupendra Kumar Singh, and Wooyong Um, 2021, "Effect of ion exchange resin particle size on homogeneity and leachability of Cs and Co in polymer waste form", RSC Advances, 2021, 11, 2729 - 2732.
• Young-Gwang Kim, Dawoon Jeong, Wooyong Um, Kyoung-Woong Kim, and Myoung-Soo Ko, 2021, "The bioleaching assessment for nuclear power plant-soil contaminated with Co and Cs using A.thiooxidans sp", Journal of Environmental Chemical Engineering, 9(1), 104791.
• M.Aamir Hafeez, Junsung Jeon, Seokju Hong, Neil Hyatt, Jong Heo, and Wooyong Um, 2021, "Fenton-like treatment for reduction of simulated carbon-14 spent resin", Journal of Environmental Chemical Engineering, 9(1), 104740.
• Yang Guo, Jicheng Lou, Jae Kyoung Cho, Nils Tilton, Jaehun Chun, Wooyong Um, Xiaolong Yin, Keith Neeves, and Ning Wu, 2020, "Transport of colloidal particles in microscopic porous medium analogs with surface charge heterogeneity: experiments and fundamental role of single-bead deposition", Environmental Science and Technology, 54, 21, 13651-13660.
• Kenton A. Rod, A. Peyton Smith, Weinan Leng, Sean Colby, Ravi K. Kukkadapu, Mark Bowden, Kent Parker, Odeta Qafoku, Wooyong Um, Michael F. Hochella, Jr., Vanessa L. Bailey, Ryan S. Renslow, 2020, “Water dispersible nano-colloids and higher temperatures promote the release of carbon from riparian soil”, Vadose Zone Journal, 19, e20077.
• Mumtaz Khan, Wooyong Um, Kug-Seung Lee,Lubna Ghani, Muhammad Saleem, and Muhammad Dilband, 2020, “Charge transfer rhenium complexes analogue to pertechnetate removal”, Journal of Environmental Chemical Engineering, 8, 104366.
• Sangsoo Han, Seokju Hong, Seongsik Nam, Won-Seok Kim, and Wooyong Um, 2020, “Decontamination of concrete waste from nuclear power plant decommissioning in South Korea”, Annals of Nuclear Energy, 149, 107795.
• Miae Kim, Myoung Gyu Ha, Wooyong Um, Hyun Gyu Kim, and Kyong-Soo Hong, 2020, “Relationship between leaching behavior and glass structure of calcium-aluminoborate waste glasses with various La2O3 contents”, Journal of Nuclear Materials, 539, 152331.
• Estela Reinoso-Maset, Nicolas Perdrial, Carl I. Steefel, Wooyong Um, Jon Chorover, Peggy A.O’Day, 2020, “Dissolved carbonate and pH control the dissolution of uranyl phosphate minerals in flow-through porous media”, Environmental Science and Technology, 54 (10), 6031-6042.
• Sarah A. Saslow, Carolyn I. Pearce, Mark E. Bowden, Wayne W. Lukens, Dong-Sang Kim, Albert A. Kruger, and Wooyong Um, 2020, “Kinetics of Co-Mingled 99Tc and Cr removal during mineral transformation of ferrous hydroxide”, Earth and Space Chemistry, 4(2), 218-228.
• Mal-Soon Lee, Sarah A. Saslow, Wooyong Um, Dong-Sang Kim, Albert A. Kruger, Roger Rousseau, and Vassiliki-Alexandra Glezakou, 2020, “Impact of Cr and Co on 99Tc retention in magnetite: A combined study of ab initio molecular dynamics and experiments”, Journal of Hazardous Materials, 387, 121721.
• Jaehyuk Kang, Tatiana G. Levitskaia, Sangsu Park, Jueun Kim, Tamas Varga, Wooyong Um,2020, Nanostructured MgFe and CoCr layered double hydroxides for removal and sequestration of iodine anions,Chemical Engineering Journal, 380 , 122408
• Guohui Wang, Wooyong Um, Dong-Sang Kim, and Albert A. Kruger, 2019, “99Tc immobilization from off-gas waste streams using nickel-doped iron spinel”, Journal of Hazardous Materials, 364, 69-77.
• Jinmo Ahn, Won-Seok Kim, and Wooyong Um, 2019, “Development of metakaolin-based geopolymer for solidification of sulfate-rich HyBRID sludge waste”, Journal of Nuclear Materials, 518, 247-255.
• Kenton A. Rod, Wooyong Um, Sean M. Colby, Mark L. Rockhold, Christopher E. Strickland, Sangsoo Han, and Andrew P. Kuprat, 2019, “Relative permeability for water and gas through fractures in cement”, PLOS ONE, 14(1): e0210741.
• Jinmo Ahn, Won-Seok Kim, Jin-Beak Park, Arokiasamy J. Francis, and Wooyong Um, 2019, “Temporal changes of geochemistry and microbial community in low and intermediate level waste (LILW) repository, South Korea”, Annals of Nuclear Energy, 128, 309-317.
• Sangsoo Han, Wooyong Um and Won-Seok Kim, “Development of bismuth-functionalized graphene oxide to remove radioactive iodine”, Dalton Trans.,2019,48,478-485
• Carolyn Pearce, R. Jeffrey Serne, Sarah Saslow, Wooyong Um, R. Matthew Asmussen, Micah Miller, Odeta Qafoku, Michelle Snyder, Charles Resch, Kayla Johnson, Guohui Wang, Heald, Steve, Jim Szecsody, John Zachara, Nikolla P. Qafoku, Andrew Plymale, and Vicky Freedman, 2018, “Characterizing technetium in subsurface sediments for contaminant remediation”, Earth and Space Chemistry, 2, 1145-1160.
• Sarah A. Saslow, Wooyong Um, Carolyn I. Pearce, Mark E. Bowden, Mark H. Engelhard,Wayne L. Lukens, Dong-Sang Kim, Michael J. Schweiger, and Albert A. Kruger,2018, “Cr(VI) Effect on Tc-99 Removal from Hanford Low-Activity Waste Simulant by Ferrous Hydroxide”, Environmental Science and Technology, 52, 11752-11759.
• Won-Seok Kim, Sangsoo Han, Jinmo Ahn, and Wooyong Um, 2018, “Investigation of 3H, 99Tc, and 90Sr transport in fractured rock and the effects of fractured filling/coating material at LILW disposal facility”, Environmental Geochemistry and Health, 40(178), 1-15.
• Mumtaz Khan, Wooyong Um, Won-Seok Kim, Jong Heo, HyunJu Kim, and Seeun Chang, 2018, “Synthesis of rhenium-doped tin dioxide for technetium radioactive waste immobilization”, Journal of Nuclear Materials, 505, 134-142.
• Kenton Rod, Wooyong Um, Jaehun Chun, Ning Wu, Xialong Yin, Guohui Wang, and Keith Neeves, 2018, “Effect of chemical and physical heterogeneities on colloid-facilitated cesium transport”, Journal of Contaminant Hydrology, 213, 22-27.
• Steven A. Luksic, Dong Sang Kim, Wooyong Um, Guohui Wang, Michael J. Schweiger, Chuck Z. Soderquist, Wyne Lukes, and Albert A. Kruger, 2018, “Effect of Technetium-99sources on its retention in low activity waste glass”, Journal of Nuclear Materials, 503, 235-244.
• Jungjin Kim, Hyunju Kim, Won-Seok Kim, and Wooyong Um, 2018, “Dissolution of studtite [UO2(O2)(H2O)4] in various geochemical conditions”, Journal of Environmental Radioactivity, 189, 57-66.
• Seeun Chang, Wooyong Um, Won-Seok Kim, and HyunJu Kim, 2018, “Effect of seawater intrusion on radioactive strontium (90Sr) sorption and transport at nuclear power plants”, RadiochimicaActa, 106 (2), 147-160.
• Husnain Syed M., Wooyong Um, Woojin Lee, and Y-S Chang, 2018. “Magnetite-based adsorbents for sequestration of radionuclides: a review”, Royal Society of Chemistry Advances, 8, 2521-2540.
• Won-Seok Kim, Seongsik Nam, Seeun Chang, HyunJu Kim, and Wooyong Um, 2018, “Removal of Chalk River Unidentified deposit (CRUD) radioactive waste by enhanced electrokinetic process”, Journal of Industrial and Engineering Chemistry, 57, 89-96.
• Nicolas Perdrial, Angelica Vazquez-Ortega, Guohui Wang, Masa Kanematsu, Karl T. Mueller, Wooyong Um, Carl I. Steefel, Peggy O’Day, and Jon Chorover, 2018, “Uranium speciation in acid weathered sediments: the role of aging and phosphate amendments”, Applied Geochemistry, 89, 109-120.
• Won-Seok Kim, Seongsik Nam, Seeun Chang, HyunJu Kim, and Wooyong Um, 2017, “Removal of Chalk River Unidentified deposit (CRUD) radioactive waste by enhanced electrokinetic process”, Journal of Industrial and Engineering Chemistry, Published online: 2017-08-13 | DOI: https://doi.org/10.1016/j.jiec.2017.08.011
• Seeun Chang, Wooyong Um, Won-Seok Kim, and HyunJu Kim, 2017, “Effect of seawater intrusion on radioactive strontium (90Sr) sorption and transport at nuclear power plants”, Radiochimica Acta, Published Online: 2017-09-11 | DOI:https://doi.org/10.1515/ract-2016-2724
• Guohui Wang, Wooyong Um, Zheming Wang, Estela Reinoso-Maset, Nicolas Perdrial, Nancy M. Washton1, Karl T. Mueller1, Peggy A. O’Day, and Jon Chorover. 2017, “Uranium Release from Acidic Weathered Hanford Sediments: Single-Pass Flow-Through Experiments”, Environmental Science and Technology, 51, 11011-11019.
• Wooyong Um, Steven A. Luksic, Guohui Wang, Sarah Saslow, Dong-Sang Kim, Michael J. Schweiger, Chuck Z. Soderquist, Mark E. Bowden, Wayne W. Lukens, and Albert A. Kruger, 2017, “Enhanced 99Tc retention in glass waste form using Tc(IV)-incorporated Fe minerals”, Journal of Nuclear Materials, 495, 455-462.
• Syed M. Husnain, Hyun Ju Kim, Wooyong Um, Y-Y. Chang, and Y-S. Chang. 2017, “Superparamagnetic adsorbent based on phosphonate grafted mesoporous carbon for uranium removal”, Industrial and Engineering Chemistry Research (I&EC research), 56, 821-9830
• Sarah Saslow, Wooyong Um, Carolyn Pearce, Mark Engelhard, Mark Bowden, Wayne Lukens, Dong-Sang Kim, Michael J. Schweiger, and Albert A. Kruger, 2017, “Reduction and Simultaneous Removal of 99Tc and Cr by Fe(OH)2(s) Mineral Transformation”, Environmental Science and Technology, 52, 8635-8642.
• Guohui Wang, Wooyong Um, Kirk J. Cantrell, Michelle M.V. Snyder, Mark E. Bowden, Mark B. Triplett, and Edgar C. Buck, 2017, “Effects of Hydrated Lime on Radionuclides Stabilization of Hanford Tank Residual Waste”, Chemosphere, 185, 171-177.
• Jae-Young Pyo, Cheong Won Lee, Hwan-Seo Park, Wooyong Um, and Jong Heo. 2017, “Tellurite glasses for vitrification of technetium-99 from pyrochemical processing”, Journal of Nuclear Materials, 493, 1-5.
• M. Ian Childers, Manh T. Nguyen, Kenton A. Rod, Phillip Koech, Wooyong Um, Jaehun Chun, Vassiliki-Alexandr Glezakou, Diana N. Tran, Timothy J. Roosendaal, Thomas W. Wietsma, Nicolas Huerta, Barbara Kutchko, and Carlos A. Fernandez. 2017, “Polymer- cement composites with self-healing ability for geothermal and fossil energy applications”, Chemistry of Materials, 29, 4708-4718.
• H. Kim, Wooyong Um, W-S. Kim, and S. Chang. 2017.“Synthesis of tributyl phosphate-coated hydroxyapatite for selective uranium removal”, Industrial and Engineering Chemistry Research (I&EC research), 56, 3399-3406.
• E. Reinoso-Maset, C.I. Steefel, Wooyong Um, J. Chorover, and P.A. O’Dday. 2017.“Rates and mechanisms of uranyl oxyhydroxide mineral dissolution”, Geochimica et Cosmochimica Acta, 207, 298-321.
• Miae Kim, J.H. Song, Wooyong Um, N. Hyatt, S-K. Sun, and J.Heo. 2017.“Structure analysis of vitusite glass-ceramic waste forms using extended X-ray absorption fine structures”, Ceramics International, 43, 4687-4691.
• Syed M. Husnain, Wooyong Um, Y-Y. Chang, and Y-S. Chang. 2017.“Recyclable superparamagnetic adsorbent based on mesoporous carbon for sequestration of radioactive cesium”, Chemical Engineering Journal, 308, 798-808.
• Yang Guo, Jingwei Huang, Feng Xiao, Xiaolong Yin, Jaehun Chun, Wooyong Um, Keith B. Neeves, and Ning Wu. 2016,“Bean-based microfluidic sediment analogues: Fabrication and colloid transport”, Langmuir, 32(36), 9342-9350.
• M-S. Lee, Wooyong Um, G Wang, AA Kruger, WW Lukens, R Rousseau, and V-A Glezakou. 2016.“Impeding 99Tc(IV) mobility in novel waste forms”, Nature Communication, 7:12067 | DOI: 10.1038/ncomms12067.
• Senthil Kabilan, Hun Bok Jung, Andrew Kuprat, Anthon Beck, Tamas Varga, Carlos Fernandez, and Wooyong Um. 2016.“Numerical Simulation of Permeability Change in Wellbore Cement Fractures after Geomechanical Stress and Geochemical Reactions using X-ray Computed Tomography Imaging”, Environmental Science and Technology, 50, 6180-6188. DOI: 10.1021/acs.est.6b00159.
• Smith Frances N., Wooyong Um, CD Taylor, D-S Kim, MJ Schweiger, and AA Kruger. 2016.“Computational investigation of Technetium(IV) incorporation into inverse spinels: Magnetite (Fe3O4) and Trevorite (NiFe2O4), Environmental Science and Technology, 50, 5216-5224. DOI: 10.1021/acs.est.6b00200.
• Husnain Syed M., J-H Kim, C-S Lee, Y-Y Chang, Wooyong Um, and Y-S Chang. 2016.“Superparamagnetic nalidixic acid grafted magnetite (Fe3O4/NA) for rapid and efficient mercury removal from water”, Royal Society of Chemistry Advances, 6, 35825-35832. DOI: 10.1039/c5ra25927d.
• Um W., KA Rod, HB Jung, and CF Brown. 2016.“Geochemical alteration of wellbore cement by CO2 or CO2+H2S reaction during long-term carbon storage” Journal of Greenhouse Gases: Science and Technology, 6, 1-14. DOI: 10.1002/ghg.1595.
• Carroll, Susan, J. William Carey, David Dzombak, Nicolas J. Huerta, Li Li, Tom Richard, Wooyong Um, Stuart D. C. Walsh, and Liwei Zhang. 2016.“Review: Role of Chemistry, Mechanics, and Transport on Well Integrity in CO2 Storage Environments.”International Journal of Greenhouse Gas Control, 49, 149?60. doi:http://dx.doi.org/10.1016/j.ijggc.2016.01.010.
• Um W., J-S Yang, RJ Serne, and JH Westsik Jr. 2015.“Reductive capacity measurement of waste forms for secondary radioactive wastes”, Journal of Nuclear Materials, 467, 251-259.
• Smith Frances N., CD Taylor, Wooyong Um, and AA Kruger. 2015.“Technetium incorporation into goethite (α-FeOOH): An atomic-scale investigation”, Environmental Science and Technology, 49, 13699-13707.
• Khan Mumtaz and Wooyong Um. 2015.“Liquid scintillation counting methodology for 99Tc analysis: A remedy for radiopharmaceutical waste”, Anal. Chem. 87. 9054-9060.
• Shao Hongbo, Senthil Kabilan, Sean Stephens, Niraj Suresh, Anthon N. Beck, Tamas Varga, Paul F. Martin, Andrew Kuprat, Hun Bok Jung, Wooyong Um, Alain Bonneville, David J. Heldebrant, Kenneth C. Carroll, Joseph Moore, and Carlos A. Fernandez. 2015.“Environmentally friendly, rheoreversible, hydraulic-fracturing fluids for enhanced geothermal systems”, Geothermics, 58, 22-31.
• Cho SungHoon, DuckKun Hwang, Wooyong Um, Dae Hee Son, and Kyeongseok Oh. 2015.“Sludge reduction by H2O2 oxidation with Fe/MgO catalyst”, Water Environment Research, 87(8), 675-682.
• Jung HB, JS Yang, Wooyong Um. 2015.“Bench-scale electrokinetic remediation for cesium-contaminated sediment at the Hanford Site, USA”, J. Radioanal. Nucl. Chem, 304, 615-625. DOI 10.1007/s10967-014-3852-0.
• Choung S, Minkyung Kim, Jung-Suk Yang, and Wooyong Um. 2014.“Effects of Radiation and Temperature on Iodide Sorption by Surfactant-Modified Bentonite”, Environmental Science and Technology, 48(16), 9684-9691.
• Jung HB, S Kabilan, JP. Carson, AP. Kuprat, Wooyong Um, P Martin, M Dahl, T Kafentzis, T Vagas, S Stephens, B Arey, KC. Carroll, A Bonneville, and CA Fernandez. 2014.“Wellbore Cement Fracture Evolution at the Cement-Basalt Caprock Interface during Geologic Carbon Sequestration”, Applied Geochemistry,47, 1-16.
• Snyder MV and Wooyong Um. 2014.“Adsorption mechanisms and transport behavior between selenate and selenite on different sorbents”, International Journal of Waste Resource, 4(2),044. d doi:10.4172/2252-5211.1000144
• Choi J, Wooyong Um, and Sungwook Choung. 2014.“Development of iron phosphate ceramic waste form to immobilize radioactive waste solution”, Journal of Nuclear Materials,452 (1-3), 16-23.
• Kanematsu M, Nicolas Perdria, Wooyong Um, J Chorover, and PA. O’Day. 2014.“Influence of phosphate and silica on U(VI) precipitation from acidic and neutralized wastewaters”, Environmental Science and Technology, 48, 6097-6106.
• Chung CW, Jaehun Chun, Guohui Wang, and Wooyong Um. 2014.“Effects of iron oxides on the rheological properties of cementitious slurry”, Colloids and Surfaces A, 453, 94-100.
• Choung S, Wooyong Um, Seho Choi, AJ. Francis, Sungpyo Kim, Jin beak Park, and Suk-Hoon Kim. 2014.“Biogeochemical Changes at Early Stage After the Closure of Radioactive Waste Geological Repository in South Korea”, Annals of Nuclear Energy, 71, 6-10.
• Cantrell KJ, Wooyong Um, BD Williams, ME Bowden, B Gartman, WW Lukens, EC Buck, and EJ Mausolf. 2014. "Chemical stabilization of Hanford tank residual waste,Journal of Nuclear Materials 446, 246-256.
• Beckingham LE, CA Peters, Wooyong Um, KW Jones, and WB Lindquist. 2013. "2D and 3D imaging resolution trade-offs in quantifying pore throats for prediction of permeability”Advances in Water Resources 62, 1-12.
• Choung S, Wooyong Um, M Kim and MG Kim. 2013.“Uptake mechanism for iodine species to black carbon”, Environmental Science and Technology, 47, 10349-10355.
• Xu K, P Hrma, Wooyong Um, and J Heo. 2013.“Iron phosphate glass for immobilization of 99Tc.”Journal of Nuclear Materials, 441, 262-266.
• Jung HB, Wooyong Um, and KJ Cantrell. 2013.“Effect of oxygen co-injected with carbon dioxide on Gothic shale caprock-CO2-brine interaction during geologic carbon sequestration.”Chemical Geology, 354, 1-14.
• Brian Riley, J Chun, Wooyong Um, WC Lepry, J Matyas, MJ Olszta, X Li, K Polychronopoulou, and MG Kanatzidis. 2013.“Chalcogen-based aerogels as sorbents for radionuclide remediation.” Environmental Science and Technology, 47, 7540-7547.
• Jung HB and Wooyong Um. 2013. “Experimental study of potential wellbore cement carbonateon by various phases of carbon dioxide during geologic carbon sequestration.”Applied Geochemistry, 35, 161-172.
• Chung CW, J Chun, Wooyong Um, SK Sundaram, and Joseph H. Westsik Jr. 2013.“Setting and stiffening of cementitious components in Cast Stone waste form for disposal of secondary wastes from the Hanford waste treatment and immobilization plan.”Cement and Concrete Research, 46, 14-22.
• Wang G. and Wooyong Um. 2013. “Facilitated strontium transport by remobilization of strontium-containing secondary precipitates in Hanford Site subsurface.”Journal of Hazardous Materials, 248-249, 364-370.
• Jung HB, D Jansik, and Wooyong Um. 2013.“Imaging wellbore cement degradation by carbon dioxide under geologic sequestration conditions using X-ray computed microtomography.” Environmental Science and Technology. 47, 283-289.
• Wang G. and Wooyong Um. 2012.“Mineral dissolution and secondary precipitation on quartz sand in simulated Hanford Tank solutions affecting subsurface porosity.” Journal of Hydrology, 472-473, 159-168.
• Um W., HS Chang, JP Icenhower, WW Lukens, RJ Serne, NP Qafoku, RK Kukkadapu, and JH Westsik. 2012.“Iron oxide waste form for stabilizing 99Tc.”Jou[rnal of Nuclear Materials, 429, 201-209.
• Crandell LE, CA Peters, Wooyong Um, KW Jones, and WB Lindquist. 2012. "Changes in the pore network structure of Hanford sediment after reaction with caustic tank wastes." Journal of Contaminant Hydrology 131(1-4):89-99.
• Chung CW, Wooyong Um, MM Valenta, SK Sundaram, Jaehun Chun, Kent E. Parker, ML Kimura, and Joseph H. Westsik Jr. 2012.“Characteristics of cast stone cementitious waste form for immobilization of secondary wastes from vitrification process.”Journal of Nuclear Materials, 420, 164-174.
• Chang H-S., Wooyong Um, K Rod, RJ Serne, A Thompson, N Perdrial, CI Steefel, and J Chorover. 2011.“Strontium and Cesium Release Mechanisms during Unsaturated Flow through Waste Weathered Hanford Sediments.”Environmental Science and Technology, 45(19), 8313-8320.
• Kim BC, J Lee, Wooyong Um, J Kim, J Joo, JH Lee, JH Kwak, JH Kim, C Lee, H Lee, RS Addleman, T Hyeon, MB Gui, J Kim. 2011.“Magnetic Mesoporous materials for removal of environmental wastes.”Journal of Hazardous Materials, 192, 1140-1147.
• Um W, H-S Chang, JP Icenhower, WW Lukens, RJ Serne, NP Qafoku, JH Westsik, Jr., EC Buck and SC Smith. 2011.“Immobilization of 99-Technetium (VII) by Fe(II)-Goethite and Limited Reoxidation.”Environmental Science and Technology, 45(11), 4904-4913.
• Rod KA, Wooyong Um, and M Flury. 2010.“Transport of strontium and cesium in simulated Hanford tank waste leachate through quartz sand under saturated and unsaturated flow.”Environmental Science and Technology, 44(21), 8089-8094.
• Um W, JM Zachara, C Liu, DA Moore and K Rod. 2010.“Resupply Mechanism to a Contaminated Aquifer: A Laboratory Study of U(VI) Desorption from Capillary Fringe Sediments.”Geochimica et Cosmochimica Acta, 74, 5155-5170.
• Um W, JP Icenhower, CF Brown, RJ Serne, Z Wang, CJ Dodge, and AJ Francis. 2010.“Characterization of uranium-contaminated sediments from beneath a nuclear waste storage tank from Hanford, Washington: Implications for contaminant transport and fate.”Geochimica et Cosmochimica Acta, 74, 1363-1380.
• Cai R., WB Lindquist, Wooyong Um, KW Jones. 2009.“Tomographic analysis of reactive flow induced pore structure changes in column experiments.” Advances in Water Resources, 32, 1396-1403.
• Um W, RJ Serne, Z Wang, CF Brown, BD Williams, CJ Dodge, and AJ Francis.2009.“Uranium Phases in Contaminated Sediments below Hanford’s U Tank Farm.”Environmental Science and Technology 43, 4280-4286.
• Um W, RJ Serne, GV Last, RE Clayton, and ET Glossbrenner. 2009. “The effect of gravel size fraction on the distribution coefficients of selected radionuclides.”Journal of Contaminant Hydrology 107: 82-90.
• Um W, RJ Serne, CF Brown, and K Rod. 2008. “Uranium (VI) sorption on iron oxides in Hanford Site sediment: Application of a surface complexation model.”Applied Geochemistry 23: 2649-2657.
• Um W, RJ Serne, CF Brown, and GV Last. 2007.“U(VI) Adsorption on 200-UP-1 Aquifer Sediments at the Hanford Site.”Journal of Contaminant Hydrology 93: 255-269.
• Shin, Y. GE Fryxell, W Um, K Parker, SV Mattigod, and R Skaggs. 2007. “Sulfur-Functionalized Mesoporous Carbon.”Advanced Functional Materials 17: 2897-2901.
• Um W, RJ Serne, and KM Krupka. 2007.“Surface Complexation Modeling of U(VI) Adsorption to Hanford Sediment with Varying Geochemical Conditions.”Environmental Science and Technology 41 (10): 3587-3592.
• Um W, S Mattigod, RJ Serne, GE Fryxell, DH Kim, and LD Troyer. 2007.“Synthesis of nanoporous zirconium oxophosphate and application for removal of U(VI)”Water Research 41(15): 3217-3226.
• Um W and RJ Serne. 2005. “Sorption and Transport Behavior of Radionuclides in the Proposed Low-Level Radioactive Waste Facility at the Hanford Site, Washington.”Radiochimica Acta 93(1): 57-63.
• Um W, RJ Serne, SB Yabusaki, and AT Owen. 2005.“Enhanced radionuclide immobilization and flow path modifications by dissolution and secondary precipitates.”Journal of Environmental Quality 34(4): 1404-1414.
• Um W and C Papelis. 2004.“Metal ion sorption and desorption on zeolitized tuffs from the Nevada Test Site.”Environmental Science and Technology 38(2): 496-502.
• Um W, RJ Serne, and KM Krupka. 2004.“Linearity and reversibility of iodide adsorption on sediments from Hanford, Washington under water saturated conditions.”Water Research 38(8): 2009-2016.
• Diallo MS, S Christie, P Swaminathan, L Balogh, X Shi, W Um, C Papelis, WA Goddard III, and JH Johnson Jr. 2004.“Dendritic chelating agents 1. Cu (II) binding to ethylene diamine core poly (amidoamine) dendrimers in aqueous solutions.”Langmuir 20(7): 2640-2651.
• Papelis C, W Um, CE Russell, and JB Chapman. 2003.“Measuring the specific surface area of natural and manmade glasses: Effects of formation process, morphology, and particle size.”Colloids & Surfaces A 215 (1-3): 221-239.
• Um W and C Papelis. 2003.“Sorption mechanisms of Sr and Pb on zeolitized tuffs from the Nevada Test Site as a function of pH and ionic strength.”American Mineralogist, 88(11-12): 2028-2039.





미국 특허

• Self-repairing cement polymer composites and processes of making and using, Fernandez; Carlos A.; Koech; Phillip K.; Um; Wooyong; Glezakou; Vassiliki-Alexandra; Chun; Jaehun; Childers; M. Ian; Nguyen; Manh Thuong; Rod; Kenton A., 2018/2/15, United States Patent and Trademark Office, US20180044570A1.





한국 특허

• 동결건조 방식을 이용한 칼코겔 흡착제 합성방법, 강재혁, 조항래, 허종, 박상수, 엄우용, 2021년 1월 14일, 대한민국, 특허 제10-2205146
• 펜톤유사공정을 이용한 IRN-150 폐수지 분해방법 및 분해장치, 전준성, 엄우용, 홍석주, 하피즈 무하마드 아밀, 2021년 1월 8일, 대한민국, 특허출원 제 10-2021-0002818호
• 방사성 폐기물 고화방법 및 이에 따른 방사성 폐기물 고화체, 엄우용, 김선병, 안진모, 2020년 11월 16일, 대한민국, 특허등록 제 10-2181217호
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• 비스무트그래핀산화물을 함유한 요오드 흡착제 및 이를 포함한 고정층 컬럼 및 성형물, 한상수, 엄우용, 김원석, 2018년 11월14일, 대한민국, 특허등록 제 10-1920233호
• 비스무트그래핀산화물 제조방법 및 이를 이용한 요오드 흡착방법, 한상수, 엄우용, 김원석, 2018년 6월1일, 대한민국, 특허등록 제 10-1865774호.
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