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    Degradation of sodium dodecyl sulfate by photoelectrochemical and electrochemical processes

    Access Status
    Fulltext not available
    Authors
    Nguyen, H.
    Phan, Chi
    Sen, T.
    Date
    2016
    Type
    Journal Article
    
    Metadata
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    Citation
    Nguyen, H. and Phan, C. and Sen, T. 2016. Degradation of sodium dodecyl sulfate by photoelectrochemical and electrochemical processes. Chemical Engineering Journal. 287: pp. 633-639.
    Source Title
    Chemical Engineering Journal
    DOI
    10.1016/j.cej.2015.11.074
    ISSN
    1385-8947
    School
    Department of Chemical Engineering
    URI
    http://hdl.handle.net/20.500.11937/26889
    Collection
    • Curtin Research Publications
    Abstract

    A comparative degradation of sodium dodecyl sulfate (SDS) by photoelectrochemical (PEC) and electrochemical in dark (EC – dark) processes was investigated. The completed degradation of SDS molecules after the first hour was observed via UV–Vis spectrum and Fourier transform infrared spectroscopy (FTIR). On contrast, only 1% SDS was removed by physical absorption on α-Fe2O3 surface. A numerical model was developed to describe simultaneous reactions during degradation process, including SDS hydrolysis, complete oxidation and partial oxidation of dodecanol. The model was able to predict the kinetics of both SDS removal and TOC reduction. It was found that the PEC method was more efficient compared to the EC – dark process. The process showed that simple PEC process can complete remove the sulfate group in SDS and reduce 90% of TOC. The remaining organics contains hydroxyl and carboxylic groups, which are less harmful than SDS.

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