Journal of Radiation Protection and Research

The Korean Association for Radiation Protection (대한방사선방어학회)
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Ion Exchange Behavior of $^{137}Cs,\;^{60}Co$ on Diphosil, a new ion exchange resin

Diphosil 이온교환수지에 의한 $^{137}Cs,\;^{60}Co$의 이온교환 거동

  • Kim, Su-Jeong (Nuclear Environment Technology Institute Korea Hydro & Nuclear Power Co. Ltd.) ;
  • Lee, Sang-Jin (Nuclear Environment Technology Institute Korea Hydro & Nuclear Power Co. Ltd.) ;
  • Yang, Ho-Yeon (Nuclear Environment Technology Institute Korea Hydro & Nuclear Power Co. Ltd.) ;
  • Shin, Sang-Woon (Nuclear Environment Technology Institute Korea Hydro & Nuclear Power Co. Ltd.)
  • 김수정 (한국수력원자력(주) 원자력환경기술원) ;
  • 이상진 (한국수력원자력(주) 원자력환경기술원) ;
  • 양호연 (한국수력원자력(주) 원자력환경기술원) ;
  • 신상운 (한국수력원자력(주) 원자력환경기술원)
  • Published : 2004.03.30
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Abstract

Diphosil, a new version of the organic-inorganic composite resin developed by ANL has a structure of the chelating diphosphonic acid groups grafted to a silica support. To apply Diphosil for the treatment of liquid radioactive waste from nuclear power plants, the adsorption equilibrium and column experiments were carried out for the main radionuclides, $^{137}Cs\;and\;^{60}Co$, in the liquid radwaste stream. Through the adsorption equilibrium experiments, the removal efficiencies of $^{137}Cs\;and\;^{60}Co$, and the effects of non-radioactive ions on the removal efficiency have been measured in various conditions using radiotracers. The breakthrough curves for the tested tracers were obtained from the laboratory scale column tests using the simulated liquid radioactive waste. In addition, the removal capacity of Diphosil is compared with that of Amberlite IRN 77 resin, generally used in nuclear power plants.

ANL에서 개발한 유 무기 복합의 신이온교환수지인 Diphosil은 silica 물질에 diphosphonic acid 그룹을 결합시킨 구조를 가지고 있다. Diphosil을 원전 운영 중 발생되는 방사성폐액 처리에 적용하기 위해 주대상 핵종인 $^{137}Cs,\;^{60}Co$을 사용하여 흡착 평형과 컬럼 실험을 수행하였다. 흡착 평형 실험을 통하여 $^{137}Cs$과 $^{60}Co$의 제거율과 그 제거율에 미치는 다양한 조건에서 비방사성 이온의 영향을 조사하였다. 대상 핵종에 대한 파과곡선은 모의 방사성 폐액을 이용한 실험실 수준의 컬럼 실험을 통해 구하였고, Diphosil의 제거능력을 현재 원전에서 쓰이고 있는 Amberlite IRN 77 수지와 비교하였다.

Keywords

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