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    Outer-selective pressure-retarded osmosis hollow fiber membranes from vacuum-assisted interfacial polymerization for osmotic power generation

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    Type
    Article
    Authors
    Sun, Shipeng
    Chung, Neal Tai-Shung cc
    KAUST Department
    Water Desalination and Reuse Research Center (WDRC)
    Date
    2013-10-28
    Online Publication Date
    2013-10-28
    Print Publication Date
    2013-11-19
    Permanent link to this record
    http://hdl.handle.net/10754/563089
    
    Metadata
    Show full item record
    Abstract
    In this paper, we report the technical breakthroughs to synthesize outer-selective thin-film composite (TFC) hollow fiber membranes, which is in an urgent need for osmotic power generation with the pressure-retarded osmosis (PRO) process. In the first step, a defect-free thin-film composite membrane module is achieved by vacuum-assisted interfacial polymerization. The PRO performance is further enhanced by optimizing the support in terms of pore size and mechanical strength and the TFC layer with polydopamine coating and molecular engineering of the interfacial polymerization solution. The newly developed membranes can stand over 20 bar with a peak power density of 7.63 W/m2, which is equivalent to 13.72 W/m2 of its inner-selective hollow fiber counterpart with the same module size, packing density, and fiber dimensions. The study may provide insightful guidelines for optimizing the interfacial polymerization procedures and scaling up of the outer-selective TFC hollow fiber membrane modules for PRO power generation. © 2013 American Chemical Society.
    Citation
    Sun, S.-P., & Chung, T.-S. (2013). Outer-Selective Pressure-Retarded Osmosis Hollow Fiber Membranes from Vacuum-Assisted Interfacial Polymerization for Osmotic Power Generation. Environmental Science & Technology, 47(22), 13167–13174. doi:10.1021/es403270n
    Sponsors
    The authors thank (1) GSK-EDB Trust Fund for the project with Grant R-706-000-019-592 and (2) Singapore National Research Foundation under its Environmental and Water Technologies Strategic Research Programme and administered by the Environment and Water Industry Programme Office (EWI) of the PUB under the project entitled "Membrane Development for Osmotic Power Generation, Part 1. Materials Development and Membrane Fabrication" (1102-IRIS-11-01) and NUS Grant R-279-000-381-279. Special thanks are due to Dr. Zhang Sui and Han Gang for their valuable suggestions. Shi-Peng Sun acknowledges IChemE for the award of "Singapore Young Chemical Engineer of the Year 2012".
    Publisher
    American Chemical Society (ACS)
    Journal
    Environmental Science & Technology
    DOI
    10.1021/es403270n
    PubMed ID
    24117418
    ae974a485f413a2113503eed53cd6c53
    10.1021/es403270n
    Scopus Count
    Collections
    Articles; Water Desalination and Reuse Research Center (WDRC)

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