Membrane Journal (멤브레인)

The Membrane Society of Korea (한국막학회)
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Electro-electrodialysis Using the Radiation-treated Cation Exchange Membrane by Accelerated Electron Radiation to Concentrate HI from HIx Solution

전자선 가속기에 의해 방사선 처리한 양이온교환막을 이용한 전해-전기투석에 의한 HIx용액으로부터 HI의 농축

  • Hwang, Gab-Jin (Dept. Hydrogen & Fuel Cell, Korea Institute of Energy Research) ;
  • Kim, Jeong-Keun (Dept. Hydrogen & Fuel Cell, Korea Institute of Energy Research) ;
  • Lee, Sang-Ho (Dept. Hydrogen & Fuel Cell, Korea Institute of Energy Research) ;
  • Choi, Ho-Sang (Dep. Chemical Engineering, Kyungil Univ.)
  • 황갑진 (한국에너지기술연구원 수소연료전지연구본부) ;
  • 김정근 (한국에너지기술연구원 수소연료전지연구본부) ;
  • 이상호 (한국에너지기술연구원 수소연료전지연구본부) ;
  • 최호상 (경일대학교 화학공학과)
  • Published : 2007.12.30
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Abstract

Electro-electrodialysis of hydriodic acid with HI molality of ca. 9.5 $mol/kg-H_2O$ was examined in the presence of iodine using a commercial cation exchange membrane, CMB, as a separator. For the increase of the selectivity of proton permeation, the membrane was radiation-treated by accelerated electron radiation. The membrane properties (area resistance, ion exchange capacity, water content) of the radiation-treated membranes were measured. The area resistance in 2 $mol/dm^3$ KCl solution, ion exchange capacity and water content of the radiation-treated membranes at each dose rate dad almost the same value as that of the non-treated membrane (original of CMB membrane). Electro-electrodialysis of hydriodic acid with HI molality of ca. 9.5 $mol/kg-H_2O$ was examined at $75^{\circ}C$ with 9.6 $A/dm^2$. The radiation-treated cation exchange membrane by accelerated electron radiation had higher selectivity of the proton permeation by cross-linking structure of polymer than that of the non-treated membrane.

HI몰랄리티가 9.5 $mol/kg-H_2O$인 HI의 전해-전기투석을 시판의 양이온교환막(CMB)을 이용하여 요오드의 존재하에 실험을 진행하였다. 수소이온 투과의 선택성을 증가시키기 위해, 막은 전자선 가속기를 이용하여 방사선 처리하였다. 방사선 처리한 막의 막특성(막 저항, 이온교환용량, 함수율)을 측정하였다. 각각의 방사선량에서 처리한 막의 2 $mol/dm^3$의 KCl 용액에서 막저항, 이온교환용량과 함수율은 처리하지 않은 막과 거의 동등의 값을 가졌다. HI몰랄리티가 9.5 $mol/kg-H_2O$인 HI의 전해-전투기투석을 $75^{\circ}C$, 9.6 $A/dm^2$에서 진행하였다. 전자선 가속기에 의해 방사선 처리한 양이온교환막은 처리하지 않은 막과 비교하여 고분자의 가교구조와 함께 수소이온투과의 높은 선택성을 가졌다.

Keywords

References

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