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    Nanofiltration vs. reverse osmosis for the removal of emerging organic contaminants in water reuse

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    Type
    Article
    Authors
    Yangali-Quintanilla, Victor
    Maeng, Sung Kyu
    Fujioka, Takahiro
    Kennedy, Maria
    Li, Zhenyu
    Amy, Gary L.
    KAUST Department
    Biological and Environmental Sciences and Engineering (BESE) Division
    Environmental Science and Engineering Program
    Water Desalination and Reuse Research Center (WDRC)
    Date
    2011-10
    Permanent link to this record
    http://hdl.handle.net/10754/575683
    
    Metadata
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    Abstract
    Reverse osmosis (RO) in existing water reuse facilities is a water industry standard. However, that approach may be questioned taking into consideration that "tight" NF can be equal or "better" than RO. NF can achieve the same removals of RO membranes when dealing with emerging organic contaminants (pharmaceuticals, pesticides, endocrine disruptors and others). Experiments using 18 emerging contaminants were performed using membranes NF200 and NF90 at bench-scale units, and for a more complete study, results of NF and RO pilot and full-scale experiments where compared to our experimental results. The removal results showed that NF can remove many emerging contaminants. The average removal by tight NF was 82% for neutral contaminants and 97% for ionic contaminants. The average removal by RO was 85% for neutral contaminants and 99% for ionic contaminants. Aquifer recharge and recovery (ARR) followed by NF can effectively remove emerging contaminants with removals over 90% when loose NF membranes are used.
    Publisher
    Informa UK Limited
    Journal
    Desalination and Water Treatment
    DOI
    10.5004/dwt.2011.2860
    ae974a485f413a2113503eed53cd6c53
    10.5004/dwt.2011.2860
    Scopus Count
    Collections
    Articles; Biological and Environmental Sciences and Engineering (BESE) Division; Environmental Science and Engineering Program; Water Desalination and Reuse Research Center (WDRC)

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