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    Ultrasonic defouling of reverse osmosis membranes used to treat wastewater effluents

    Access Status
    Fulltext not available
    Authors
    Feng, D.
    van Deventer, J.
    Aldrich, Chris
    Date
    2006
    Type
    Journal Article
    
    Metadata
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    Citation
    Feng, D. and van Deventer, J. and Aldrich, C. 2006. Ultrasonic defouling of reverse osmosis membranes used to treat wastewater effluents. Separation and Purification Technology. 50: pp. 318-323.
    Source Title
    Separation and Purification Technology
    ISSN
    13835866
    URI
    http://hdl.handle.net/20.500.11937/19274
    Collection
    • Curtin Research Publications
    Abstract

    On-line ultrasonic cleaning was used to remove fouling from a commercially important polyamide based reverse osmosis membrane during cross-flow filtration of CaSO4, Fe3+ and carboxyl cellulose solutions. In each case, the permeate flux of the membrane increased significantly, with virtually no decrease in rejection in the presence of ultrasonication. Membrane surface characterization via scanning electron microscopy (SEM) confirmed the beneficial effect of ultrasonication on the membrane permeate flux. These studies suggest that ultrasonic defouling may be a very useful approach for the future development of reverse membranes, especially as far as fouling with organic materials is concerned.

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