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Title: Liposomes-assisted fabrication of high performance thin film composite nanofiltration membrane
Authors: Yang, Yang
Li, Ye
Goh, Kunli
Tan, Choon-Hong
Wang, Rong
Keywords: Engineering::Civil engineering
Issue Date: 2021
Source: Yang, Y., Li, Y., Goh, K., Tan, C. & Wang, R. (2021). Liposomes-assisted fabrication of high performance thin film composite nanofiltration membrane. Journal of Membrane Science, 620, 118833-.
Project: EWI 1501-IRIS-04
Journal: Journal of Membrane Science
Abstract: Conventional biomimetic membranes for desalination are mostly fabricated by incorporating water channels using self-assembled lipid or polymer vesicles as key platforms for protein or water channel reconstitution. Herein, we propose a thin film composite nanofiltration membrane via an unconventional liposomes-assisted fabrication without the incorporation of protein or water channels. The polyamide skin layer containing liposomes was thinner and filled with wrinkles and nanovoids. As a result, compared with the liposome-free control membrane, our optimized liposome-assisted membrane was able to achieve an increased water permeability from 11.17 to 18.21 LMH/bar, alongside an excellent MgCl2 rejection of 95.87% and a monovalent/divalent (NaCl/MgCl2) ion selectivity (α) of 18.2. Extensive membrane characterization showed that the liposome-assisted skin layer indeed exhibited a smaller thickness with an increased effective membrane area and a reduced surface hydrophobicity, which contribute towards a reduction in the hydrodynamic resistance of the polyamide layer. Furthermore, our approach of liposome-assisted thin film composite membrane is simpler and more scalable to fabricate without protein or water channels incorporation, rendering our design more attractive for future nanofiltration using vesicle-embedded biomimetic membranes.
ISSN: 0376-7388
DOI: 10.1016/j.memsci.2020.118833
Schools: School of Civil and Environmental Engineering 
Interdisciplinary Graduate School (IGS) 
School of Physical and Mathematical Sciences 
Research Centres: Nanyang Environment and Water Research Institute 
Singapore Membrane Technology Centre 
Rights: © 2020 Elsevier B.V. All rights reserved.
Fulltext Permission: none
Fulltext Availability: No Fulltext
Appears in Collections:CEE Journal Articles
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