Membrane Journal (멤브레인)

The Membrane Society of Korea (한국막학회)
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Study on the Pervaporation Seperation of Aqueous 1-Butanol Mixture Using Composite PEI/PDMS Membrane

1-Butanol / 물 혼합액의 PEI/PDMS 복합막 모듈을 이용한 투과증발 파일럿 분리특성

  • 천봉수 (한남대학교 대덕밸리캠퍼스 화학공학과) ;
  • 이충섭 ((주)에어레인) ;
  • 하성용 ((주)에어레인) ;
  • 임지원 (한남대학교 대덕밸리캠퍼스 화학공학과)
  • Received : 2015.08.03
  • Accepted : 2015.08.24
  • Published : 2015.08.31
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Abstract

To determine the pervaporation separation characteristics of 1-butanol/water mixtures, PEI/PDMS hollow fiber membrane module commercialized by Airrane Co. was subjected to both lab and pilot tests. The 1% 1-butanol of 1-butanol/water feed mixture was used. The flux of $133g/m^2hr$ and separation factor of 23.4 at $30^{\circ}C$ were obtained whereas the $505g/m^2hr$ and 5.1 were measured at $50^{\circ}C$. When compared with the performance of the hollow fiber PDMS membrane by Nagasep Co., the higher flux of $10{\sim}20g/m^2hr$ was obtained by the module of Airrane Co. In order to realized the durability of Airrane Co. module, the long-term test of 35 days has been conducted and as a result, the flux $510{\sim}520g/m^2hr$ and separation factor 20~25 were maintained with the initial values.

1-부탄올/물의 투과증발 분리특성을 알아보기 위해 (주)에어레인사에서 개발한 PEI 중공사막에 PDMS로 코팅한 복합막 모듈을 이용하여 랩테스트와 파일럿테스트를 실시하였다. 공급액으로는 물과 1-부탄올을 각각 99 : 1로 혼합하여 사용하였다. 실험 결과로 $30^{\circ}C$에서 투과도 $132.7g/m^2hr$, 선택도 23.4로 높은 선택도를, $50^{\circ}C$에서 투과도 $505.1g/m^2hr$, 선택도 5.1로 높은 투과도를 얻을 수 있었으며 일본의 나가셉사에서 개발한 지지체가 없는 PDMS 막 모듈과 비교했을 때 (주)에어레인사에서 개발한 복합막 모듈이 약 $10{\sim}20g/m^2hr$의 높은 투과도를 나타내었다. 테스트를 진행한 복합막 모듈의 내구성을 알아보기 위하여 약 35일간의 장기테스트를 진행하였고 그 결과 약 $510{\sim}520g/m^2hr$의 투과도와 20~25의 선택도로 초기 측정량과 큰 차이가 없음을 나타내었다.

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