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  • Removal of trace organic contaminants by an MBR comprising a mixed culture of bacteria and white-rot fungi

    Author(s)
    Nguyen, Luong N
    Hai, Faisal I
    Yang, Shufan
    Kang, Jinguo
    Leusch, Frederic DL
    Roddick, Felicity
    Price, William E
    Nghiem, Long D
    Griffith University Author(s)
    Leusch, Frederic
    Year published
    2013
    Metadata
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    Abstract
    The degradation of 30 trace organic contaminants (TrOC) by a white-rot fungus-augmented membrane bioreactor (MBR) was investigated. The results show that white-rot fungal enzyme (laccase), coupled with a redox mediator (1-hydroxy benzotriazole, HBT), could degrade TrOC that are resistant to bacterial degradation (e.g. diclofenac, triclosan, naproxen and atrazine) but achieved low removal of compounds (e.g. ibuprofen, gemfibrozil and amitriptyline) that are well removed by conventional activated sludge treatment. Overall, the fungus-augmented MBR showed better TrOC removal compared to a system containing conventional activated ...
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    The degradation of 30 trace organic contaminants (TrOC) by a white-rot fungus-augmented membrane bioreactor (MBR) was investigated. The results show that white-rot fungal enzyme (laccase), coupled with a redox mediator (1-hydroxy benzotriazole, HBT), could degrade TrOC that are resistant to bacterial degradation (e.g. diclofenac, triclosan, naproxen and atrazine) but achieved low removal of compounds (e.g. ibuprofen, gemfibrozil and amitriptyline) that are well removed by conventional activated sludge treatment. Overall, the fungus-augmented MBR showed better TrOC removal compared to a system containing conventional activated sludge. The major role of biodegradation in removal by the MBR was noted. Continuous mediator dosing to MBR may potentially enhance its performance, although not as effectively as for mediator-enhanced batch laccase systems. A ToxScreen3 assay revealed no significant increase in the toxicity of the effluent during MBR treatment of the synthetic wastewater comprising TrOC, confirming that no toxic by-products were produced.
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    Journal Title
    Bioresource Technology
    Volume
    148C
    DOI
    https://doi.org/10.1016/j.biortech.2013.08.142
    Subject
    Environmental management
    Publication URI
    http://hdl.handle.net/10072/56121
    Collection
    • Journal articles

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