A Simple, Cost-Efficient Method to Separate Microalgal Lipids from Wet Biomass Using Surface Energy-Modified Membranes
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- 作者：Moo Jin Kwak ; Youngmin Yoo ; Han Sol Lee ; Jiyeon Kim ; Ji-Won Yang ; Jong-In Han ; Sung Gap Im ; Jong-Hee Kwon
- 刊名：ACS Applied Materials & Interfaces
- 出版年：2016
- 出版时间：January 13, 2016
- 年：2016
- 卷：8
- 期：1
- 页码：600-608
- 全文大小：483K
- ISSN：1944-8252
文摘
For the efficient separation of lipid extracted from microalgae cells, a novel membrane was devised by introducing a functional polymer coating onto a membrane surface by means of an initiated chemical vapor deposition (iCVD) process. To this end, a steel-use-stainless (SUS) membrane was modified in a way that its surface energy was systemically modified. The surface modification by conformal coating of functional polymer film allowed for selective separation of oil–water mixture, by harnessing the tuned interfacial energy between each liquid phase and the membrane surface. The surface-modified membrane, when used with chloroform-based solvent, exhibited superb permeate flux, breakthrough pressure, and also separation yield: it allowed separation of 95.5 ± 1.2% of converted lipid (FAME) in the chloroform phase from the water/MeOH phase with microalgal debris. This result clearly supported that the membrane-based lipid separation is indeed facilitated by way of membrane being functionalized, enabling us to simplify the whole downstream process of microalgae-derived biodiesel production.