Membrane Journal (멤브레인)

The Membrane Society of Korea (한국막학회)
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Effects of Polymer Material and Solvent Properties on the Performance of Organic Solvent Nanofiltration Membranes

고분자 소재와 용매특성에 따른 유기용매 나노여과막 성능 분석

  • Choi, JiHyun (Energy and Chemical Engineering Department, Incheon National University) ;
  • Kim, Jeong F. (Energy and Chemical Engineering Department, Incheon National University)
  • 최지현 (인천대학교 에너지화학공학과) ;
  • 김정 (인천대학교 에너지화학공학과)
  • Received : 2022.01.02
  • Accepted : 2022.02.07
  • Published : 2022.02.28
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Abstract

In this work, the solvent permeation and separation performance of organic solvent nanofiltration (OSN) membranes were evaluated. Particularly, the PuraMem (PM) series developed for nonpolar solvents were analyzed and tested in dead-end filtration system. PM membranes exhibited higher permeance for nonpolar solvents compared to polar solvents, and their rejection data did not follow conventional trends with respect to solute size. The data showed that simple solution-diffusion model is not suitable to describe the OSN membrane behavior, and a better solvent-solute-membrane interaction parameter must be developed.

본 연구에서는 유기용매용 나노여과막 (Organic Solvent Nanofiltration, OSN)의 유기용매 투과 및 분리성능을 분석하였다. 비극성용매에 적합한 Puramem (PM) 시리즈 분리막의 소재를 분석한 후 다양한 유기용매 분위기에서의 투과성능을 데드엔드셀로 측정하였다. PM 시리즈 분리막은 극성용매 대비 비극성용매에서 더 높은 투과도를 보였으며, 용질의 종류 및 분자량에 따라 매우 독특한 배제성능을 보이는 것을 확인하였다. 이는 기존 수처리에 적용되는 Solution-diffusion 투과모델이 OSN 투과모델에는 적합하지 않다는 것을 알 수 있으며, solvent-solute-membrane 간의 상관관계를 더 정확하게 반영할 수 있는 새로운 인자가 필요하다는 결론을 낼 수 있다.

Keywords

Acknowledgement

이 논문은 2021년도 정부(산업통상자원부)의 재원으로 한국에너지기술평가원의 지원을 받아 수행된 연구임 (20202020800330, 정밀화학산업 반응-분리·정제 에너지절감 공정 기술 개발 및 실증)

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