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  • Temporal responses of 4-chlorophenol on the performance and functional genes expression of activated sludge in sequencing batch bioreactor

    Author(s)
    Zhao, Jianguo
    Li, Yahe
    Li, Yu
    Yang, Dejian
    Zhu, Changai
    Zhang, Shanqing
    Griffith University Author(s)
    Zhang, Shanqing
    Year published
    2020
    Metadata
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    Abstract
    In this study, a lab-scale sequencing batch bioreactor (SBR) with hydraulic retention time (HRT) of 8 h was established to treat 50 mg/L 4-chlorophenol (4-CP), and the temporal responses of 4-CP on the performance and the expression level of related functional genes in sludge were explored. Results showed that after the SBR was acclimated with the cometabolic carbon sources of 4-CP and methanol, the pollutants were effectively degraded. The pollutants removal was influenced by the polysaccharides and proteins in sludge. The real-time PCR showed that except for the gene p450, the prompt removal of pollutants before 2 h caused ...
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    In this study, a lab-scale sequencing batch bioreactor (SBR) with hydraulic retention time (HRT) of 8 h was established to treat 50 mg/L 4-chlorophenol (4-CP), and the temporal responses of 4-CP on the performance and the expression level of related functional genes in sludge were explored. Results showed that after the SBR was acclimated with the cometabolic carbon sources of 4-CP and methanol, the pollutants were effectively degraded. The pollutants removal was influenced by the polysaccharides and proteins in sludge. The real-time PCR showed that except for the gene p450, the prompt removal of pollutants before 2 h caused the significant upregulation of the other functional genes from the genus Pseudomonas in sludge, while the downregulation occurred from 2 to 8 h with the progressive removal of pollutants in SBR cycle, indicating that the removal of pollutants was closely related to the functional genes expression.
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    Journal Title
    Water and Environment Journal
    DOI
    https://doi.org/10.1111/wej.12585
    Note
    This publication has been entered in Griffith Research Online as an advanced online version.
    Subject
    Environmental Engineering
    Science & Technology
    Life Sciences & Biomedicine
    Physical Sciences
    Environmental Sciences
    Limnology
    Publication URI
    http://hdl.handle.net/10072/397812
    Collection
    • Journal articles

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