A Simple, Cost -Efficient Method to Separate Microalgal Lipids from Wet Biomass Using Surface Energy-Modified Membranes

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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 oilwater 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.
Publisher
AMER CHEMICAL SOC
Issue Date
2016-01
Language
English
Article Type
Article
Citation

ACS APPLIED MATERIALS & INTERFACES, v.8, no.1, pp.600 - 608

ISSN
1944-8244
DOI
10.1021/acsami.5b09655
URI
http://hdl.handle.net/10203/209233
Appears in Collection
CBE-Journal Papers(저널논문)CE-Journal Papers(저널논문)
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