Membrane Journal (멤브레인)

The Membrane Society of Korea (한국막학회)
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Preparation of PVDF/PDMS Composite Membrane and Separation of n-butanol/water Mixtures by Pervaporation

PVDF/PDMS 복합막의 제조와 투과증발을 이용한 n-부탄올/물 혼합물의 분리

  • Lee, Yong-Taek (Department of Chemical Engineering, College of Engineering, Kyung Hee University) ;
  • Jee, Ki-Yong (Department of Chemical Engineering, College of Engineering, Kyung Hee University) ;
  • Jeon, Eun-Joo (Department of Chemical Engineering, College of Engineering, Kyung Hee University) ;
  • Kim, No-Won (Department of Environmental Engineering, Dong-Eui University)
  • 이용택 (경희대학교 공과대학 화학공학과) ;
  • 지기용 (경희대학교 공과대학 화학공학과) ;
  • 전은주 (경희대학교 공과대학 화학공학과) ;
  • 김노원 (동의대학교 환경공학과)
  • Published : 2009.09.30
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Abstract

This study focuses on preparation of PVDF/PDMS composite membranes to effectively separate butanol from water-butanol mixture using pervaporation. We prepared various composite membranes by changing PVDF concentration of support layer and PDMS cross-linking condition of active layer. Pervaporation performance was tested by measuring butanol flux and separation factor with various cases of butanol concentration, temperature, and flow rate of feed. As results, performance of our novel PVDF/PDMS membranes surpasses that of PVDF/POMS membrane, manufactured by GKSS (Germany), in term of butanol flux, permeate concentration, and separation factor.

본 연구는 PVDF/PDMS 복합막을 제조하여 부탄올을 농축을 위한 투과증발특성에 대해 알아보았다. 또한 복합막의 제조 방법에 따른 투과특성을 알아보기 위해 지지층의 PVDF 농도변화와 활성층의 경화조건에 따라 투과증발 최적막을 선정하였다. 이 막을 사용하여 공급액의 농도, 온도 및 순환 유속을 변화시켜 부탄올의 투과특성에 미치는 영향에 대해 알아보았다. 그 결과 공급액의 농도, 온도, 순환 유속이 증가할 경우 부탄올의 플럭스와 투과 농도가 증가함을 확인하였으며 상용막인 GKSS사의 PVDF/POMS 복합막과 비교한 결과 부탄올 투과 플럭스, 투과 농도, 선택도 등 모두 높은 값을 나타내었다.

Keywords

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