Membrane Journal (멤브레인)

The Membrane Society of Korea (한국막학회)
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Pervaporation Separation of Water-Isopropyl Alcohol Mixtures Using PVA/PAN Hollow Fiber Composite Membranes

PVA/PAN 중공사 복합막을 이용한 IPA수용액의 투과증발분리

  • 김지선 (한남대학교 대덕밸리캠퍼스 화학공학과) ;
  • 조은혜 (한남대학교 대덕밸리캠퍼스 화학공학과) ;
  • 강수연 (한남대학교 대덕밸리캠퍼스 화학공학과) ;
  • 정성일 (한남대학교 대덕밸리캠퍼스 화학공학과) ;
  • 박헌휘 ((주)이엔이) ;
  • 서창희 ((주)이엔이) ;
  • 임지원 (한남대학교 대덕밸리캠퍼스 화학공학과)
  • Received : 2013.04.12
  • Accepted : 2013.04.23
  • Published : 2013.04.30
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Abstract

Poly (vinyl alcohol) (PVA) solution containing the glutaraldehyde (GA) as a crosslinking agent was coated onto the polyacrylonitrile (PAN) hollow fiber membrane as the supporter. Pervaporation experiments were carried out to characterize the prepared PVA/PAN composite membrane for water-isopropyl alcohol mixture. The flux and separation factor were measured at 30, 50, $90^{\circ}C$ for the feed mixture of aqueous 85 wt% IPA solution with varying the reaction temperature and composition of coating solutions. Typically the flux showed 1,870 $g/m^2{\cdot}hr$ at $90^{\circ}C$ feed mixture and the coating concentration of 3.5 wt% and the highest separation factor of 804 was obtained at $30^{\circ}C$ feed mixture and the coating concentration of 7 wt% as well.

지지체인 Polyacrylonitrile (PAN) 중공사에 Poly (vinyl alcohol) (PVA)과 가교제인 Glutaraldehyde (GA)를 코팅하여 막을 제조하였으며, 특성평가를 위해 물/Isopropyl alcohol (IPA) 혼합액에 대한 투과증발 실험을 수행하였다. 코팅용액의 조성변화와 반응온도의 조건변화에 따른 투과도 및 선택도를 측정하였고, 공급액의 조성은 85 wt% IPA 수용액을 사용하였으며, 온도는 30, 50, 70, $90^{\circ}C$로 변화시켰다. 투과도는 PVA 3.5 wt%, 공급액 온도가 $90^{\circ}C$일 때 1,870 $g/m^2{\cdot}hr$, 선택도는 PVA 7 wt% 공급액 온도가 $30^{\circ}C$일 때 804로 가장 높은 값을 얻을 수 있었다.

Keywords

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