멤브레인 (Membrane Journal)

  • 제19권4호
  • /
  • Pages.333-340
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  • 2009
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  • 1226-0088(pISSN)
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  • 2288-7253(eISSN)
한국막학회 (The Membrane Society of Korea)
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가교제를 도입시킨 술폰산형 이온교환막의 금속이온 포집

Capture of Metal Ions by Cross-linked Sulfonic Acid Type Ion Exchange Membranes

  • 김민 (동국대학교 안전환경시스템공학과) ;
  • 김예진 (동국대학교 안전환경시스템공학과) ;
  • 박상진 (동국대학교 화공생물공학과)
  • Kim, Min (Department of Safety Environmental System Engineering, Dongguk University) ;
  • Kim, Ye-Jin (Department of Safety Environmental System Engineering, Dongguk University) ;
  • Park, Sang-Jin (Department of Chemical and Biochemical Engineering, Dongguk University)
  • 발행 : 2009.12.30
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초록

본 연구의 목적은 중금속 흡착을 위한 방사선 그라프트 중합법에 의한 이온교환막의 성능 향상을 위한 것이다. 그라프트 체인의 이온교환기에 의해 체인이 막의 pore를 방해하여 투과유속이 크게 저하되는 문제를 해결하고자 그라프트 체인과 체인사이를 N-ethyleneglycoldimethacrylate계 가교제를 첨가하여 투과유속이 저하되는 문제를 해결하고자 했다. 이때 사용된 가교제는 길이가 서로 다른 ethylene glycol dimethacrylate (EDMA)와 diethylene glycol dimethacrylate (DDMA)를 사용하였다. GMA 막에 가교제가 첨가된 이온교환막에 술폰산기를 첨가한 막을 이용하여 중금속 이온($Pb^{2+}$) 흡착을 하였다. 술폰산기 밀도가 1.40 mmol/g인 EDMA막은 13.82 mg/g을 흡착하였고, 술폰산기 밀도가 2.14 mmol/g인 DDMA막은 17.37 mg/g의 흡착량을 보였다.

This paper is designed with the purpose of improving the efficiency of the sulfonic acid ion exchange membranes by radiation induced graft polymerization. It has been shown that the porous hollow fiber membranes could cause permeability blocking between pores and ion exchanged graft chains. Addition of crosslinker such as N-ethylene glycol dimethacrylate will permit to increase the permeation flux. In this research, the ethylene glycol dimethacrylate (EDMA) and diethylene glycol dimethacrylate (DDMA) with different length are used as crosslinkers. The ion exchanged cross-linked membrane (EDMA, DDMA) containing sulfonic acid group by radiation induced grafted polymerization are sn died for adsorb metal ions (Pb). It has been shown that adsorbed metal ions ($Pb^{2+}$) for the EDMA and DDMA membranes with the density of sulfonic acid groups, 1.40 mmol/g and 2.14 mmol/g, respectively are 13.82 mg/g, 17.37 mg/g, accordingly.

키워드

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