Abstract
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 6.5×103 L m-2 h-1, with excellent separation efficiency greater than 98.0%.
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Shin, J., Kim, H., Moon, H. et al. A hydrogel-coated membrane for highly efficient separation of microalgal bio-lipid. Korean J. Chem. Eng. 35, 1319–1327 (2018). https://doi.org/10.1007/s11814-018-0039-3
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DOI: https://doi.org/10.1007/s11814-018-0039-3