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    Organic fouling behavior of superhydrophilic polyvinylidene fluoride (PVDF) ultrafiltration membranes functionalized with surface-tailored nanoparticles: Implications for organic fouling in membrane bioreactors

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    Type
    Article
    Authors
    Liang, Shuai
    Qi, Genggeng
    Xiao, Kang
    Sun, Jianyu
    Giannelis, Emmanuel P.
    Huang, Xia
    Elimelech, Menachem
    KAUST Grant Number
    KUS-C1-018-02
    Date
    2014-08
    Permanent link to this record
    http://hdl.handle.net/10754/599111
    
    Metadata
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    Abstract
    This study systematically investigates the organic fouling behavior of a superhydrophilic polyvinylidene fluoride (PVDF) ultrafiltration membrane functionalized via post-fabrication tethering of surface-tailored silica nanoparticles to poly(methacrylic acid)-grafted PVDF membrane surface. Sodium alginate (SA), Suwannee River natural organic matter (SRNOM), and bovine serum albumin (BSA) were used as model organic foulants to investigate the antifouling behavior of the superhydrophilic membrane with combined-fouling (mixture of foulants) and individual-fouling (single foulant) tests. A membrane bioreactor (MBR) plant supernatant was also used to verify the organic antifouling property of the superhydrophilic membrane under realistic conditions. Foulant size distributions and foulant-membrane interfacial forces were measured to interpret the observed membrane fouling behavior. Molecular weight cutoff measurements confirmed that membrane functionalization did not adversely affect the intrinsic membrane selectivity. Both filtration tests with the synthetic foulant-mixture solution (containing SA, SRNOM, and BSA) and MBR plant supernatant demonstrated the reliability and durability of the antifouling property of the superhydrophilic membrane. The conspicuous reduction in foulant-membrane interfacial forces for the functionalized membrane further verified the antifouling properties of the superhydrophilic membrane, suggesting great potential for applications in wastewater treatment. © 2014 Elsevier B.V.
    Citation
    Liang S, Qi G, Xiao K, Sun J, Giannelis EP, et al. (2014) Organic fouling behavior of superhydrophilic polyvinylidene fluoride (PVDF) ultrafiltration membranes functionalized with surface-tailored nanoparticles: Implications for organic fouling in membrane bioreactors. Journal of Membrane Science 463: 94–101. Available: http://dx.doi.org/10.1016/j.memsci.2014.03.037.
    Sponsors
    This publication is based on work supported by Award no. KUS-C1-018-02, made by King Abdullah University of Science and Technology (KAUST), Tsinghua University Initiative Scientific Research Program (No. 20121087922) and Program for Changjiang Scholars and Innovative Research Team in University. We also acknowledge the postgraduate scholarship program by China Scholarship Council (CSC).
    Publisher
    Elsevier BV
    Journal
    Journal of Membrane Science
    DOI
    10.1016/j.memsci.2014.03.037
    ae974a485f413a2113503eed53cd6c53
    10.1016/j.memsci.2014.03.037
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