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  • Continuous biotransformation of bisphenol A and diclofenac by laccase in an enzymatic membrane reactor

    Author(s)
    Nguyen, Luong N
    Hai, Faisal I
    Price, William E
    Leusch, Frederic DL
    Roddick, Felicity
    McAdam, Ewan J
    Magram, Saleh F
    Nghiem, Long D
    Griffith University Author(s)
    Leusch, Frederic
    Year published
    2014
    Metadata
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    Abstract
    A novel enzymatic membrane reactor (EMR) was explored for continuous removal of two trace organic contaminants (TrOCs) ubiquitously detected in wastewater - namely bisphenol A (BPA) and diclofenac (DCF) - by a commercially available laccase from Aspergillus oryzae. An ultrafiltration membrane prevented washout of the enzyme and allowed continuous removal of BPA and DCF (>85% and >60%, respectively) under a loading rate of 570 ᠷ0 姯L d (BPA) and 480 ᠴ0 姯L d (DCF). The BPA and DCF removal could be further improved to >95% and >80%, respectively, by dosing to the EMR a natural redox-mediator compound - syringaldehyde (5 卩 - ...
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    A novel enzymatic membrane reactor (EMR) was explored for continuous removal of two trace organic contaminants (TrOCs) ubiquitously detected in wastewater - namely bisphenol A (BPA) and diclofenac (DCF) - by a commercially available laccase from Aspergillus oryzae. An ultrafiltration membrane prevented washout of the enzyme and allowed continuous removal of BPA and DCF (>85% and >60%, respectively) under a loading rate of 570 ᠷ0 姯L d (BPA) and 480 ᠴ0 姯L d (DCF). The BPA and DCF removal could be further improved to >95% and >80%, respectively, by dosing to the EMR a natural redox-mediator compound - syringaldehyde (5 卩 - believed to act as an electron shuttle between laccase and the target pollutants. Of particular interest was the significant retention of the TrOCs on the gel layer of enzyme on the membrane surface, and their subsequent biodegradation.
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    Journal Title
    International Biodeterioration & Biodegradation
    Volume
    95
    Issue
    Part A
    DOI
    https://doi.org/10.1016/j.ibiod.2014.05.017
    Subject
    Environmental sciences
    Environmental management
    Biological sciences
    Analytical biochemistry
    Publication URI
    http://hdl.handle.net/10072/67121
    Collection
    • Journal articles

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