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    Higher boron rejection with a new TFC forward osmosis membrane

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    Type
    Article
    Authors
    Valladares Linares, Rodrigo cc
    Li, Zhenyu
    Sarp, Sarper
    Park, Y. G.
    Amy, Gary L.
    Vrouwenvelder, Johannes S. cc
    KAUST Department
    Biological and Environmental Sciences and Engineering (BESE) Division
    Environmental Science and Engineering Program
    Water Desalination and Reuse Research Center (WDRC)
    Date
    2014-07-17
    Online Publication Date
    2014-07-17
    Print Publication Date
    2015-09-04
    Permanent link to this record
    http://hdl.handle.net/10754/566118
    
    Metadata
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    Abstract
    Due to the stringent limits for boron in drinking and irrigation water, water treatment facilities have to incur additional treatment to remove boron down to a safe concentration. Forward osmosis (FO) is a membrane technology that may reduce the energy required to remove boron present in seawater. In direct FO desalination hybrid systems, fresh water is recovered from seawater using a recoverable draw solution, FO membranes are expected to show high boron rejection. This study focuses on determining the boron rejection capabilities of a new generation thin-film composite (TFC) FO membrane compared to a first generation cellulose triacetate (CTA) FO membrane. The effects of water permeate flux, membrane structure, draw solute charge, and reverse solute flux on boron rejection were determined. For TFC and CTA FO membranes, experiments showed that when similar operating conditions are applied (e.g. membrane type and draw solute type) boron rejection decreases with increase in permeate flux. Reverse draw solute flux and membrane fouling have no significant impact on boron rejection. Compared to the first generation CTA FO membrane operated at the same conditions, the TFC FO membrane showed a 40% higher boron rejection capability and a 20% higher water flux. This demonstrates the potential for boron removal for new generation TFC FO membranes. © 2014 © 2014 Balaban Desalination Publications. All rights reserved.
    Citation
    Valladares Linares, R., Li, Z. Y., Sarp, S., Park, Y. G., Amy, G., & Vrouwenvelder, J. S. (2014). Higher boron rejection with a new TFC forward osmosis membrane. Desalination and Water Treatment, 55(10), 2734–2740. doi:10.1080/19443994.2014.940220
    Publisher
    Informa UK Limited
    Journal
    Desalination and Water Treatment
    DOI
    10.1080/19443994.2014.940220
    ae974a485f413a2113503eed53cd6c53
    10.1080/19443994.2014.940220
    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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