Continuous Ion Exchange Characteristics of Ni, Co and Ag Ions in Acidic-Oxidizing Conditions

산성-산화성 분위기에서 니켈(Ni), 코발트(Co) 및 은(Ag) 이온의 연속식 이온교환 특성

  • Kim, Young H. (Department of Fine Chemical Engineering and Chemistry, Chungnam National University) ;
  • Yang, Hyun S. (Department of Fine Chemical Engineering and Chemistry, Chungnam National University) ;
  • Kim, Woong K. (Department of Fine Chemical Engineering and Chemistry, Chungnam National University)
  • 김영호 (충남대학교 정밀공업화학과) ;
  • 양현수 (충남대학교 정밀공업화학과) ;
  • 김웅기 (충남대학교 정밀공업화학과)
  • Received : 1998.08.18
  • Accepted : 1998.11.16
  • Published : 1999.04.10

Abstract

Continuous ion exchange characteristics of the synthetic coolant contained Ni, Co and Ag ions of low concentration in acidic-oxidizing conditions have been studied to suggest the guideline for the optimum operation of mixed-bed demincralizer during the shutdown period of a pressurized water reactor (PWR). In the effect of the form of cation resins on the removal capacity of metal ions, the performance of a $H^+$-form resin was about 6% higher than that of a $Li^+$-form resin. Mixed-bed of cation and anion resins in comparison with nonmixed-bed of them, had no affected on the removal capacity of metal ions but very slightly increased the slope of breakthrough curves of metal ions. In the effect related to acidic-oxidizing conditions of the coolant, the addition of boric acid very slightly decreased the slope of breakthrough curves of metal ions, while the addition of hydrogen peroxide slightly decreased the removal capacity of metal ions.

Keywords

Ion Exchange;Mixed-bed;Metal Ion;Acidic-oxidizing Condition;Breakthrough Curve

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