Wooyong Um

Summary

Affiliation: Pacific Northwest National Laboratory
Country: USA

Publications

  1. ncbi request reprint Metal ion sorption and desorption on zeolitized tuffs from the Nevada Test Site
    Wooyong Um
    Division of Hydrologic Sciences, Desert Research Institute, Las Vegas, Nevada 89119, USA
    Environ Sci Technol 38:496-502. 2004
  2. doi request reprint Immobilization of 99-technetium (VII) by Fe(II)-goethite and limited reoxidation
    Wooyong Um
    Pacific Northwest National Laboratory, PO Box 999, P7 54, 902 Battelle Boulevard, Richland, WA 99354, USA
    Environ Sci Technol 45:4904-13. 2011
  3. ncbi request reprint Uranium phases in contaminated sediments below Hanford's U tank farm
    Wooyong Um
    Pacific Northwest National Laboratory, Richland, Washington, USA
    Environ Sci Technol 43:4280-6. 2009
  4. doi request reprint The effect of gravel size fraction on the distribution coefficients of selected radionuclides
    Wooyong Um
    Pacific Northwest National Laboratory, Richland, WA 99352, USA
    J Contam Hydrol 107:82-90. 2009
  5. ncbi request reprint Synthesis of nanoporous zirconium oxophosphate and application for removal of U(VI)
    Wooyong Um
    Pacific Northwest National Laboratory, Richland, WA 99352, USA
    Water Res 41:3217-26. 2007
  6. ncbi request reprint Surface complexation modeling of U(VI) sorption to Hanford sediment with varying geochemical conditions
    Wooyong Um
    Pacific Northwest National Laboratory, P O Box 999, MS P7 22, Richland, Washington 99354, USA
    Environ Sci Technol 41:3587-92. 2007
  7. ncbi request reprint U(VI) adsorption on aquifer sediments at the Hanford Site
    Wooyong Um
    Pacific Northwest National Laboratory, PO Box 999, MS P7 22, Richland, WA 99354, USA
    J Contam Hydrol 93:255-69. 2007
  8. ncbi request reprint Enhanced radionuclide immobilization and flow path modifications by dissolution and secondary precipitates
    Wooyong Um
    Pacific Northwest National Laboratory, P O Box 999, MS P7 22, Richland, WA 99354, USA
    J Environ Qual 34:1404-14. 2005
  9. ncbi request reprint Linearity and reversibility of iodide adsorption on sediments from Hanford, Washington under water saturated conditions
    Wooyong Um
    Pacific Northwest National Laboratory, Applied Geology and Geochemistry, Richland, WA 99352, USA
    Water Res 38:2009-16. 2004
  10. doi request reprint Strontium and cesium release mechanisms during unsaturated flow through waste-weathered Hanford sediments
    Hyun Shik Chang
    Pacific Northwest National Laboratory, P O Box 999, Richland, Washington 99354, United States
    Environ Sci Technol 45:8313-20. 2011

Collaborators

Detail Information

Publications14

  1. ncbi request reprint Metal ion sorption and desorption on zeolitized tuffs from the Nevada Test Site
    Wooyong Um
    Division of Hydrologic Sciences, Desert Research Institute, Las Vegas, Nevada 89119, USA
    Environ Sci Technol 38:496-502. 2004
    ..Any increase in the dissolved ion concentration of the groundwater, however, may result in, at least partial, release of Sr and enhanced Sr mobility...
  2. doi request reprint Immobilization of 99-technetium (VII) by Fe(II)-goethite and limited reoxidation
    Wooyong Um
    Pacific Northwest National Laboratory, PO Box 999, P7 54, 902 Battelle Boulevard, Richland, WA 99354, USA
    Environ Sci Technol 45:4904-13. 2011
    ..Incorporation of Tc(IV) into the goethite lattice thus provides significant advantages for limiting reoxidation and curtailing release of Tc disposed in nuclear waste repositories...
  3. ncbi request reprint Uranium phases in contaminated sediments below Hanford's U tank farm
    Wooyong Um
    Pacific Northwest National Laboratory, Richland, Washington, USA
    Environ Sci Technol 43:4280-6. 2009
    ....
  4. doi request reprint The effect of gravel size fraction on the distribution coefficients of selected radionuclides
    Wooyong Um
    Pacific Northwest National Laboratory, Richland, WA 99352, USA
    J Contam Hydrol 107:82-90. 2009
    ..In addition, more detailed characterization of gravel surfaces should be conducted to identify whether higher reactive sorbents are present in the gravels...
  5. ncbi request reprint Synthesis of nanoporous zirconium oxophosphate and application for removal of U(VI)
    Wooyong Um
    Pacific Northwest National Laboratory, Richland, WA 99352, USA
    Water Res 41:3217-26. 2007
    ....
  6. ncbi request reprint Surface complexation modeling of U(VI) sorption to Hanford sediment with varying geochemical conditions
    Wooyong Um
    Pacific Northwest National Laboratory, P O Box 999, MS P7 22, Richland, Washington 99354, USA
    Environ Sci Technol 41:3587-92. 2007
    ..The generalized composite surface complexation model, when compared to the constant or single-valued Kd model, more accurately predicted U(VI) sorption under the varying geochemical conditions expected at the IDF...
  7. ncbi request reprint U(VI) adsorption on aquifer sediments at the Hanford Site
    Wooyong Um
    Pacific Northwest National Laboratory, PO Box 999, MS P7 22, Richland, WA 99354, USA
    J Contam Hydrol 93:255-69. 2007
    ....
  8. ncbi request reprint Enhanced radionuclide immobilization and flow path modifications by dissolution and secondary precipitates
    Wooyong Um
    Pacific Northwest National Laboratory, P O Box 999, MS P7 22, Richland, WA 99354, USA
    J Environ Qual 34:1404-14. 2005
    ....
  9. ncbi request reprint Linearity and reversibility of iodide adsorption on sediments from Hanford, Washington under water saturated conditions
    Wooyong Um
    Pacific Northwest National Laboratory, Applied Geology and Geochemistry, Richland, WA 99352, USA
    Water Res 38:2009-16. 2004
    ....
  10. doi request reprint Strontium and cesium release mechanisms during unsaturated flow through waste-weathered Hanford sediments
    Hyun Shik Chang
    Pacific Northwest National Laboratory, P O Box 999, Richland, Washington 99354, United States
    Environ Sci Technol 45:8313-20. 2011
    ..However, a three-site ion-exchange model was needed for the HI-column. The study implied that the weathering conditions greatly impact the speciation of the secondary minerals and leaching behavior of sequestrated Sr and Cs...
  11. doi request reprint Transport of strontium and cesium in simulated hanford tank waste leachate through quartz sand under saturated and unsaturated flow
    Kenton A Rod
    Pacific Northwest National Laboratory, P O Box 999, K3 62, 902 Battelle Boulevard, Richland, Washington 99354, USA
    Environ Sci Technol 44:8089-94. 2010
    ..1 M NaNO(3) columns. Analysis of STWL column data revealed that both Sr and Cs breakthrough curves showed nonideal behavior that suggest nonequilibrium conditions, although nonlinear geochemical behavior cannot be ruled out...
  12. doi request reprint Facilitated strontium transport by remobilization of strontium-containing secondary precipitates in Hanford Site subsurface
    Guohui Wang
    Pacific Northwest National Laboratory, Richland, WA 99354, USA
    J Hazard Mater 248:364-70. 2013
    ..The increased mobility of Sr-containing secondary precipitates with changing background conditions can be a potential source for additional radionuclide transport in Hanford Site subsurface environments...
  13. doi request reprint Imaging wellbore cement degradation by carbon dioxide under geologic sequestration conditions using X-ray computed microtomography
    Hun Bok Jung
    Pacific Northwest National Laboratory, Richland, Washington 99354, United States
    Environ Sci Technol 47:283-9. 2013
    ..It is shown here that XMT imaging can potentially provide a new insight into the physical and chemical degradation of wellbore cement by CO(2) leakage...
  14. ncbi request reprint Dendritic chelating agents. 1. Cu(II) binding to ethylene diamine core poly(amidoamine) dendrimers in aqueous solutions
    Mamadou S Diallo
    Materials and Process Simulation Center, Beckman Institute, California Institute of Technology, Pasadena, California 91125, USA
    Langmuir 20:2640-51. 2004
    ..At low metal ion-dendrimer loadings, the model provides a good fit of the measured extent of binding of Cu(II) in aqueous solutions of G4-NH2 and G5-NH2 PAMAM dendrimers at pH 7.0...