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    Effects of anti-scaling and cleaning chemicals on membrane scale in direct contact membrane distillation process for RO brine concentrate

    Access Status
    Fulltext not available
    Authors
    Peng, Y.
    Ge, J.
    Li, Z.
    Wang, Shaobin
    Date
    2015
    Type
    Journal Article
    
    Metadata
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    Citation
    Peng, Y. and Ge, J. and Li, Z. and Wang, S. 2015. Effects of anti-scaling and cleaning chemicals on membrane scale in direct contact membrane distillation process for RO brine concentrate. Separation and Purification Technology. 154: pp. 22-26.
    Source Title
    Separation and Purification Technology
    DOI
    10.1016/j.seppur.2015.09.007
    ISSN
    1383-5866
    School
    Department of Chemical Engineering
    URI
    http://hdl.handle.net/20.500.11937/24868
    Collection
    • Curtin Research Publications
    Abstract

    Membrane distillation (MD) is a promising desalination technology for water recovery from reverse osmosis (RO) brine. However, calcium sulfate as the major pollutant in RO brine concentrates induces scale occurrence in MD. Effective control of membrane scaling and cleaning of the membrane module are the key technologies for the industrialization of MD. In this work, effects of four anti-scaling and five cleaning agents on calcium sulfate scaling in direct contact membrane distillation (DCMD) process were investigated and discussed. It was found that membrane scaling and wetting was significantly alleviated with the addition of an effective anti-scaling agent. The flux recovery of a membrane with five cleaning agents was also improved and the flux recovery using a 2% EDTA-4Na solution was obtained as high as 92.8% at 77 °C.

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