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    Proposing nanofiltration as acceptable barrier for organic contaminants in water reuse

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    Type
    Article
    Authors
    Yangali-Quintanilla, Victor
    Maeng, Sungkyu
    Fujioka, Takahiro
    Kennedy, Maria Dolores
    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
    2010-10
    Permanent link to this record
    http://hdl.handle.net/10754/561512
    
    Metadata
    Show full item record
    Abstract
    For water reuse applications, " tight" nanofiltration (NF) membranes (of polyamide) as an alternative to reverse osmosis (RO) can be an effective barrier against pharmaceuticals, pesticides, endocrine disruptors and other organic contaminants. The use of RO in existing water reuse facilities is addressed and questioned, taking into consideration that tight NF can be a more cost-effective and efficient technology to target the problem of organic contaminants. It was concluded that tight NF is an acceptable barrier for organic contaminants because its removal performance approaches that of RO, and because of reduced operation and maintenance (O&M) costs in long-term project implementation. Average removal of neutral compounds (including 1,4-dioxane) was about 82% and 85% for NF and RO, respectively, and average removal of ionic compounds was about 97% and 99% for NF and RO, respectively. In addition, " loose" NF after aquifer recharge and recovery (ARR) can be an effective barrier against micropollutants with removals over 90%. When there is the presence of difficult to remove organic contaminants such as NDMA and 1,4-dioxane; for 1,4-dioxane, source control or implementation of treatment processes in wastewater treatment plants will be an option; for NDMA, a good strategy is to limit its formation during wastewater treatment, but there is evidence that biodegradation of NDMA can be achieved during ARR. © 2010 Elsevier B.V.
    Citation
    Yangali-Quintanilla, V., Maeng, S. K., Fujioka, T., Kennedy, M., & Amy, G. (2010). Proposing nanofiltration as acceptable barrier for organic contaminants in water reuse. Journal of Membrane Science, 362(1-2), 334–345. doi:10.1016/j.memsci.2010.06.058
    Sponsors
    The authors acknowledge the financial support of the Delft Cluster project and the European Union Techneau project for funding this research. Special thanks to Dr. Sacher (TZW, Germany) for contributing with analytical results, and to Timothy Selle and Katarina Majamaa (Dow-Filmtec) for kindly providing membrane samples and information.
    Publisher
    Elsevier BV
    Journal
    Journal of Membrane Science
    DOI
    10.1016/j.memsci.2010.06.058
    ae974a485f413a2113503eed53cd6c53
    10.1016/j.memsci.2010.06.058
    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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