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Effects of salinity build-up on the performance and bacterial community structure of a membrane bioreactor

Journal Article


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Abstract


  • This study investigated the effects of salinity increase on bacterial community structure in a membrane bioreactor (MBR) for wastewater treatment. The influent salt loading was increased gradually to simulate salinity build-up in the bioreactor during the operation of a high retention-membrane bioreactor (HR-MBR). Bacterial community diversity and structure were analyzed using 454 pyrosequencing of 16S rRNA genes of MBR mixed liquor samples. Results show that salinity increase reduced biological performance but did not affect microbial diversity in the bioreactor. Unweighted UniFrac and taxonomic analyses were conducted to relate the reduced biological performance to the change of bacterial community structure. In response to the elevated salinity condition, the succession of halophobic bacteria by halotolerant/halophilic microbes occurred and thereby the biological performance of MBR was recovered. These results suggest that salinity build-up during HR-MBR operation could be managed by allowing for the proliferation of halotolerant/halophilic bacteria.

Authors


  •   Luo, Wenhai
  •   Phan, Hop V. (external author)
  •   Hai, Faisal I.
  •   Price, William E.
  •   Guo, Wenshan (external author)
  •   Ngo, Hao H. (external author)
  •   Yamamoto, Kazuo (external author)
  •   Nghiem, Long D. (external author)

Publication Date


  • 2016

Citation


  • Luo, W., Phan, H. V., Hai, F. I., Price, W. E., Guo, W., Ngo, H. H., Yamamoto, K. & Nghiem, L. D. (2016). Effects of salinity build-up on the performance and bacterial community structure of a membrane bioreactor. Bioresource Technology, 200 305-310.

Scopus Eid


  • 2-s2.0-84945157267

Ro Full-text Url


  • http://ro.uow.edu.au/cgi/viewcontent.cgi?article=5806&context=eispapers

Ro Metadata Url


  • http://ro.uow.edu.au/eispapers/4779

Has Global Citation Frequency


Number Of Pages


  • 5

Start Page


  • 305

End Page


  • 310

Volume


  • 200

Place Of Publication


  • Netherlands

Abstract


  • This study investigated the effects of salinity increase on bacterial community structure in a membrane bioreactor (MBR) for wastewater treatment. The influent salt loading was increased gradually to simulate salinity build-up in the bioreactor during the operation of a high retention-membrane bioreactor (HR-MBR). Bacterial community diversity and structure were analyzed using 454 pyrosequencing of 16S rRNA genes of MBR mixed liquor samples. Results show that salinity increase reduced biological performance but did not affect microbial diversity in the bioreactor. Unweighted UniFrac and taxonomic analyses were conducted to relate the reduced biological performance to the change of bacterial community structure. In response to the elevated salinity condition, the succession of halophobic bacteria by halotolerant/halophilic microbes occurred and thereby the biological performance of MBR was recovered. These results suggest that salinity build-up during HR-MBR operation could be managed by allowing for the proliferation of halotolerant/halophilic bacteria.

Authors


  •   Luo, Wenhai
  •   Phan, Hop V. (external author)
  •   Hai, Faisal I.
  •   Price, William E.
  •   Guo, Wenshan (external author)
  •   Ngo, Hao H. (external author)
  •   Yamamoto, Kazuo (external author)
  •   Nghiem, Long D. (external author)

Publication Date


  • 2016

Citation


  • Luo, W., Phan, H. V., Hai, F. I., Price, W. E., Guo, W., Ngo, H. H., Yamamoto, K. & Nghiem, L. D. (2016). Effects of salinity build-up on the performance and bacterial community structure of a membrane bioreactor. Bioresource Technology, 200 305-310.

Scopus Eid


  • 2-s2.0-84945157267

Ro Full-text Url


  • http://ro.uow.edu.au/cgi/viewcontent.cgi?article=5806&context=eispapers

Ro Metadata Url


  • http://ro.uow.edu.au/eispapers/4779

Has Global Citation Frequency


Number Of Pages


  • 5

Start Page


  • 305

End Page


  • 310

Volume


  • 200

Place Of Publication


  • Netherlands