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    Aquaporin based biomimetic membrane in forward osmosis: Chemical cleaning resistance and practical operation

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    Aquaporin FO manuscript.pdf
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    Accepted Manuscript
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    Type
    Article
    Authors
    Li, Zhenyu
    Valladares Linares, Rodrigo cc
    Bucs, Szilard cc
    Fortunato, Luca cc
    Hélix-Nielsen, Claus
    Vrouwenvelder, Johannes S. cc
    Ghaffour, NorEddine cc
    Leiknes, TorOve cc
    Amy, Gary
    KAUST Department
    Biological and Environmental Sciences and Engineering (BESE) Division
    Environmental Science and Engineering Program
    Water Desalination and Reuse Research Center (WDRC)
    Date
    2017-07-27
    Online Publication Date
    2017-07-27
    Print Publication Date
    2017-10
    Permanent link to this record
    http://hdl.handle.net/10754/625706
    
    Metadata
    Show full item record
    Abstract
    Aquaporin plays a promising role in fabricating high performance biomimetic forward osmosis (FO) membranes. However, aquaporin as a protein also has a risk of denaturation caused by various chemicals, resulting in a possible decay of membrane performance. The present study tested a novel aquaporin based biomimetic membrane in simulated membrane cleaning processes. The effects of cleaning agents on water flux and salt rejection were evaluated. The membrane showed a good resistance to the chemical agents. The water flux after chemical cleaning showed significant increases, particularly after cleaning with NaOCl and Alconox. Changes in the membrane structure and increased hydrophilicity in the surrounding areas of the aquaporin may be accountable for the increase in water permeability. The membrane shows stable salt rejection up to 99% after all cleaning agents were tested. A 15-day experiment with secondary wastewater effluent as the feed solution and seawater as the draw solution showed a stable flux and high salt rejection. The average rejection of the dissolved organic carbon from wastewater after the 15-day test was 90%. The results demonstrated that the aquaporin based biomimetic FO membrane exhibits chemical resistance for most agents used in membrane cleaning procedures, maintaining a stable flux and high salt rejection.
    Citation
    Li Z, Valladares Linares R, Bucs S, Fortunato L, Hélix-Nielsen C, et al. (2017) Aquaporin based biomimetic membrane in forward osmosis: Chemical cleaning resistance and practical operation. Desalination 420: 208–215. Available: http://dx.doi.org/10.1016/j.desal.2017.07.015.
    Sponsors
    We thank Aquaporin A/S for the valuable discussions and providing us with the aquaporin based biomimetic membranes.
    Publisher
    Elsevier BV
    Journal
    Desalination
    DOI
    10.1016/j.desal.2017.07.015
    Additional Links
    http://www.sciencedirect.com/science/article/pii/S001191641730752X
    ae974a485f413a2113503eed53cd6c53
    10.1016/j.desal.2017.07.015
    Scopus Count
    Collections
    Articles; Biological and Environmental Science and Engineering (BESE) Division; Environmental Science and Engineering Program; Water Desalination and Reuse Research Center (WDRC)

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