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The Membrane Society of Korea (한국막학회)
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Development and Application of Cation-exchange Membranes Including Chelating Resin for Efficient Heavy-metal Ion Removal

효율적인 중금속 이온 제거를 위한 킬레이팅 수지를 포함한 양이온 교환막의 개발 및 응용

  • Kim, Do-Hyeong (Department of Green Chemical Engineering, Sangmyung University) ;
  • Choi, Young-Eun (Department of Green Chemical Engineering, Sangmyung University) ;
  • Park, Jin-Soo (Department of Green Chemical Engineering, Sangmyung University) ;
  • Kang, Moon-Sung (Department of Green Chemical Engineering, Sangmyung University)
  • 김도형 (상명대학교 그린화학공학과) ;
  • 최영은 (상명대학교 그린화학공학과) ;
  • 박진수 (상명대학교 그린화학공학과) ;
  • 강문성 (상명대학교 그린화학공학과)
  • Received : 2017.03.21
  • Accepted : 2017.03.29
  • Published : 2017.04.30
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Abstract

In this study, we have developed cation-exchange membranes (CEMs) which can efficiently separate heavy-metal ions among the cations contained in a water system. Sulfonated polyetheretherketone (SPEEK) was used as a base polymer and a powdered chelating resin with strong binding ability to heavy-metal ions was added into it. In order to optimize the performance of the CEM, the content of chelating resin powder and the ion exchange capacity of SPEEK have been controlled. As a result, it was confirmed that the removal efficiency of heavy metal ion was improved by more than 20% by applying the CEM to membrane capacitive deionization (MCDI).

본 연구에서는 수계 내 포함된 양이온들 중 특히 중금속 이온을 효율적으로 분리할 수 있는 양이온 교환막을 개발하였다. 기저 고분자로는 sulfonated polyetheretherketone (SPEEK)를 사용하였으며 이에 중금속 이온에 결합력이 강한 킬레이팅 수지를 파우더링하여 첨가하였다. 또한 양이온 교환막의 성능을 최적화시키기 위해 킬레이팅 수지의 함량 및 SPEEK의 이온교환용량을 제어하였다. 결과적으로 제조된 양이온 교환막을 막 축전식 탈염 공정(membrane capacitive deionization, MCDI)에 적용한 결과 중금속 이온 제거 효율이 20% 이상 향상됨을 확인할 수 있었다.

Keywords

References

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