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)
Year published
2020
Metadata
Show full item recordAbstract
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 ...
View more >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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View more >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
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