화학공학소재연구정보센터
홈 로그인 로그아웃 연락처 사이트맵
Korean Journal of Chemical Engineering, Vol.35, No.6, 1319-1327, June, 2018
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A Hydrogel-coated membrane for highly efficient separation of microalgal bio-lipid
Jihye Shin1, Hogi Kim1, Heeyeon Moon1, Moo Jin Kwak1, Seula Oh1, Youngmin Yoo1, Eunjung Lee1, Yong Keun Chang1, 2, †, and Sung Gap Im1, †
  • 1Department of Chemical and Biomolecular Engineering, KAIST, Daejeon 34141, Korea
  • 2Advanced Biomass R&D Center, Daejeon 34141, Korea
E-mail:,
A cross-linked hydrogel-coated membrane was fabricated to achieve simple but highly efficient separation of bio-lipids directly from an aqueous microalgal culture medium. The membrane is composed of a stainless steel membrane coated conformally with a cross-linked hydrogel, poly(2-hydroxyethyl methacrylate) (pHEMA), synthesized by a photo-initiated chemical vapor deposition (piCVD) process. The pHEMA-coated membrane has hydrophilicity and underwater-oleophobicity for efficient separation of a bio-lipid-in-hexane/water mixture by gravity. The conformal pHEMA film-coated membrane enables extremely high oil rejection performance with intrusion pressure of 6.1 kPa and water permeation flux of 6.5 x103 L m-2 h-1, with excellent separation efficiency greater than 98.0%.
Keywords:Membrane;Hydrophilic;Underwater-oleophobic;Cross-linked Hydrogel;Bio-lipid Separation;Photo-initiated Chemical Vapor Deposition (piCVD)
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