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  1. No Access

    Article

    Respirometric Monitoring for the Determination of Effective Height and Reaction Rate Constant in Up-Flow Autotrophic Denitrification Reactor Packed with Sulfur

    A novel technology for the removal of nitrogen from wastewater, autotrophic denitrification process with sulfur particle, has been developed. A respirometer was employed for the monitoring of nitrogen gas prod...

    In S. Kim, Wooshin Park in Environmental Monitoring and Assessment (2005)

  2. No Access

    Article

    Quantitative analysis of the trophic groups with a fluorescence in situ hybridization (FISH) and the competitive kinetics of a propionate enriched anaerobic culture

    An anaerobic culture had been enriched with propionate, which was a critical compound inhibiting the total anaerobic process when significantly accumulated. In addition, the distribution of the trophic groups ...

    Wooshin Park, Seung-Hoon Hyun, Tak-Hyun Kim… in Biotechnology and Bioprocess Engineering (2009)

  3. No Access

    Article

    Anaerobic ammonia-oxidation coupled with Fe3+ reduction by an anaerobic culture from a piggery wastewater acclimated to NH4 +/Fe3+ medium

    The oxidation of ammonia coupled with the reduction of iron is a unique pathway mostly reported in soils and sediments. An anaerobic sludge from a piggery wastewater treatment plant had been acclimated to an NH+/...

    Wooshin Park, Youn-Ku Nam, Myun-Joo Lee… in Biotechnology and Bioprocess Engineering (2009)

  4. No Access

    Article

    Electrochemical behavior of liquid Sb anode system for electrolytic reduction of UO2

    A liquid Sb anode was investigated in this study to evaluate its ability to promote the electrolytic reduction of UO2. The liquid Sb anode consumed O2− ions to convert UO2 into metallic U during electrolytic redu...

    Sung-Wook Kim, Wooshin Park, Hun Suk Im… in Journal of Radioanalytical and Nuclear Che… (2015)

  5. No Access

    Article

    Production of uranium metal via electrolytic reduction of uranium oxide in molten LiCl and salt distillation

    Recovery of metallic uranium has been achieved by electrolytic reduction of uranium oxide in a molten LiCl–Li2O electrolyte at 650 °C, followed by the removal of the residual salt by vacuum distillation at 850 °C...

    Eun-Young Choi, Chan Yeon Won… in Journal of Radioanalytical and Nuclear Che… (2015)

  6. No Access

    Article

    Carbon anode with repeatable use of LiCl molten salt for electrolytic reduction in pyroprocessing

    Carbon was investigated as an anode material for electrolytic reduction in pyroprocessing. UO2 was successfully reduced to U repeatedly using the carbon anode and the LiCl molten salt could be reused. While reusi...

    Sung-Wook Kim, Min Ku Jeon, Hyun Woo Kang… in Journal of Radioanalytical and Nuclear Che… (2016)

  7. No Access

    Article

    Distillation characteristics of LiCl–Li2O electrolyte for UO2 electrolytic reduction process

    As a process improvement, the distillation and recovery of the salts used in UO2 electrolytic reduction is required. The basic characteristics of the distillation of a LiCl–Li2O electrolyte containing UO2 pellets...

    Hyun Woo Kang, Eun-Young Choi, Sung-Wook Kim… in Journal of Radioanalytical and Nuclear Che… (2016)

  8. No Access

    Article

    Electrochemical properties of noble metal anodes for electrolytic reduction of uranium oxide

    Noble metals (Rh, Pd, Ir, and Au) were investigated as O2-evolving anodes for electrolytic reduction of UO2 in LiCl–Li2O molten salt to replace Pt anodes, which are gradually consumed owing to Li2PtO3 layer forma...

    Sung-Wook Kim, Sang-Kwon Lee, Hyun Woo Kang… in Journal of Radioanalytical and Nuclear Che… (2017)

  9. No Access

    Article

    Chemical behavior of grey phases in LiCl molten salt for oxide reduction in pyroprocessing

    Chemical stabilities of SrZrO3, BaZrO3, and Sr0.5Ba0.5ZrO3 in LiCl molten salt were investigated to evaluate dissolution properties of Sr and Ba in grey phases of spent nuclear fuels during oxide reduction. Sr in...

    Sung-Wook Kim, Min Ku Jeon, Wooshin Park… in Journal of Radioanalytical and Nuclear Che… (2018)

  10. No Access

    Article

    Uranium Recovery from Sulfate-Based Acidic Soil Washing Effluent Using Ion-Exchange Resins

    This study aimed to recover U(VI) from sulfate-based acidic soil-washing effluent using the ion-exchange method. For effective ion exchange of U(VI) under acidic conditions, one chelate resin (Purolite S950) s...

    Hyun-Kyu Lee, Wooshin Park, Seeun Chang, Hongrae Jeon… in Water, Air, & Soil Pollution (2022)