Bacterial community dynamics in an anoxic-aerobic membrane bioreactor - Impact on nutrient and trace organic contaminant removal

Phan, HV; Hai, FI; Zhang, R; Kang, J; Price, WE; Nghiem, LD

Bacterial community dynamics in an anoxic-aerobic membrane bioreactor - Impact on nutrient and trace organic contaminant removal

Phan, HV Hai, FI Zhang, R Kang, J Price, WE Nghiem, LD

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Publisher:: ELSEVIER SCI LTD
Publication Type:: Journal Article
Citation:: International Biodeterioration and Biodegradation, 2016, 109, pp. 61-72
Issue Date:: 2016-04-01

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Field	Value	Language
dc.contributor.author	Phan, HV
dc.contributor.author	Hai, FI
dc.contributor.author	Zhang, R
dc.contributor.author	Kang, J
dc.contributor.author	Price, WE
dc.contributor.author	Nghiem, LD
dc.date.accessioned	2022-02-15T07:13:59Z
dc.date.available	2022-02-15T07:13:59Z
dc.date.issued	2016-04-01
dc.identifier.citation	International Biodeterioration and Biodegradation, 2016, 109, pp. 61-72
dc.identifier.issn	0964-8305
dc.identifier.issn	1879-0208
dc.identifier.uri	http://hdl.handle.net/10453/154549
dc.description.abstract	The bacterial community in different redox regimes of an anoxic-aerobic MBR under different operating conditions was investigated using pyrosequencing. With internal recirculation (IR) between the anoxic and aerobic reactors, the bacterial communities in these reactors were highly similar in structure and phylogenetic relationship, indicating IR as a key driving force shaping the bacterial communities that are responsible for the core function in the system. Without IR, each redox condition sustained the growth of distinct bacterial communities according to their oxygen requirement, and the anoxic community presented a low capacity of nutrient and trace organic contaminant (TrOC) removal. Higher bacterial diversity under longer sludge retention time (SRT) was evident; however, except for a few TrOCs, removal efficiency of TOC, TN and TrOCs were the same irrespective of the SRT. The presence of TrOCs induced shifts in bacterial communities, and a correlation between bacterial communities and TrOC transformation was noted. The important candidates for TrOC biotransformation were the taxa within Proteobacteria, particularly Methylophilales and Myxococcales. Other bacterial groups potentially contributing to TrOC biotransformation were those related to nitrogen removal, such as Rhodocyclales and Plantomycetes. In contrast, the detected members of Cytophagaceae (Bacteroidetes) appeared not to contribute to TrOC biotransformation.
dc.language	English
dc.publisher	ELSEVIER SCI LTD
dc.relation.ispartof	International Biodeterioration and Biodegradation
dc.relation.isbasedon	10.1016/j.ibiod.2016.01.002
dc.rights	info:eu-repo/semantics/closedAccess
dc.subject	05 Environmental Sciences, 06 Biological Sciences
dc.subject.classification	Biotechnology
dc.title	Bacterial community dynamics in an anoxic-aerobic membrane bioreactor - Impact on nutrient and trace organic contaminant removal
dc.type	Journal Article
utslib.citation.volume	109
utslib.for	05 Environmental Sciences
utslib.for	06 Biological Sciences
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	closed_access	*
dc.date.updated	2022-02-15T07:13:58Z
pubs.publication-status	Published
pubs.volume	109

Abstract:

The bacterial community in different redox regimes of an anoxic-aerobic MBR under different operating conditions was investigated using pyrosequencing. With internal recirculation (IR) between the anoxic and aerobic reactors, the bacterial communities in these reactors were highly similar in structure and phylogenetic relationship, indicating IR as a key driving force shaping the bacterial communities that are responsible for the core function in the system. Without IR, each redox condition sustained the growth of distinct bacterial communities according to their oxygen requirement, and the anoxic community presented a low capacity of nutrient and trace organic contaminant (TrOC) removal. Higher bacterial diversity under longer sludge retention time (SRT) was evident; however, except for a few TrOCs, removal efficiency of TOC, TN and TrOCs were the same irrespective of the SRT. The presence of TrOCs induced shifts in bacterial communities, and a correlation between bacterial communities and TrOC transformation was noted. The important candidates for TrOC biotransformation were the taxa within Proteobacteria, particularly Methylophilales and Myxococcales. Other bacterial groups potentially contributing to TrOC biotransformation were those related to nitrogen removal, such as Rhodocyclales and Plantomycetes. In contrast, the detected members of Cytophagaceae (Bacteroidetes) appeared not to contribute to TrOC biotransformation.

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http://hdl.handle.net/10453/154549