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

Luo, W; Phan, HV; Hai, FI; Price, WE; Guo, W; Ngo, HH; Yamamoto, K; Nghiem, LD

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

Luo, W Phan, HV Hai, FI Price, WE Guo, W

Ngo, HH

Yamamoto, K Nghiem, LD

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Publication Type:: Journal Article
Citation:: Bioresource Technology, 2016, 200 pp. 305 - 310
Issue Date:: 2016-01-01

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Field	Value	Language
dc.contributor.author	Luo, W	en_US
dc.contributor.author	Phan, HV	en_US
dc.contributor.author	Hai, FI	en_US
dc.contributor.author	Price, WE	en_US
dc.contributor.author	Guo, W https://orcid.org/0000-0001-5542-2858	en_US
dc.contributor.author	Ngo, HH https://orcid.org/0000-0002-0296-2866	en_US
dc.contributor.author	Yamamoto, K	en_US
dc.contributor.author	Nghiem, LD https://orcid.org/0000-0002-9039-5792	en_US
dc.date.available	2020-05-25T19:16:30Z
dc.date.issued	2016-01-01	en_US
dc.identifier.citation	Bioresource Technology, 2016, 200 pp. 305 - 310	en_US
dc.identifier.issn	0960-8524	en_US
dc.identifier.uri	http://hdl.handle.net/10453/37905
dc.identifier.uri	http://hdl.handle.net/10453/37907
dc.description.abstract	© 2015. 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.	en_US
dc.relation.ispartof	Bioresource Technology	en_US
dc.relation.isbasedon	10.1016/j.biortech.2015.10.043	en_US
dc.subject.classification	Biotechnology	en_US
dc.subject.mesh	Membranes, Artificial	en_US
dc.subject.mesh	Bioreactors	en_US
dc.subject.mesh	Water Purification	en_US
dc.subject.mesh	Salinity	en_US
dc.subject.mesh	Waste Water	en_US
dc.title	Effects of salinity build-up on the performance and bacterial community structure of a membrane bioreactor	en_US
dc.type	Journal Article
utslib.citation.volume	200	en_US
utslib.for	090404 Membrane and Separation Technologies	en_US
pubs.embargo.period	Not known	en_US
pubs.organisational-group	/University of Technology Sydney
pubs.organisational-group	/University of Technology Sydney/Faculty of Engineering and Information Technology
pubs.organisational-group	/University of Technology Sydney/Faculty of Engineering and Information Technology/School of Civil and Environmental Engineering
pubs.organisational-group	/University of Technology Sydney/Strength - CTWW - Centre for Technology in Water and Wastewater Treatment
utslib.copyright.status	open_access
pubs.publication-status	Published	en_US
pubs.volume	200	en_US

Abstract:

© 2015. 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.

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http://hdl.handle.net/10453/37905