Impacts of antiseptic cetylpyridinium chloride on microbiome and its removal efficiency in aerobic activated sludge

Nguyen, LN; Oh, S

Impacts of antiseptic cetylpyridinium chloride on microbiome and its removal efficiency in aerobic activated sludge

Nguyen, LN

Oh, S

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Publication Type:: Journal Article
Citation:: International Biodeterioration and Biodegradation, 2019, 137 pp. 23 - 29
Issue Date:: 2019-02-01

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Field	Value	Language
dc.contributor.author	Nguyen, LN https://orcid.org/0000-0001-5360-886X	en_US
dc.contributor.author	Oh, S	en_US
dc.date.available	2021-03-22T18:02:28Z
dc.date.issued	2019-02-01	en_US
dc.identifier.citation	International Biodeterioration and Biodegradation, 2019, 137 pp. 23 - 29	en_US
dc.identifier.issn	0964-8305	en_US
dc.identifier.uri	http://hdl.handle.net/10453/129191
dc.description.abstract	© 2018 Elsevier Ltd This study evaluated short- and long-term exposure of activated sludge (AS) microbiome to cetylpyridinium chloride (CPC), a quaternary ammonium compound widely used as biocidal additive or cationic surfactant. Toxicity assay in batch mode showed that CPC (50 μg L−1) inhibited cell growth. However, in a continuous reactor, CPC concentration in the range of 50–500 μg L−1 did not result in any observable impact on the biological activities of the AS microbiome. Similarly, 16S rRNA gene-based community profiling revealed that CPC had no observable impact on microbial diversity. At the phylogenetic structure, Rhodobacter (15 ± 7% of the total) and Asticcacaulis (9 ± 3%) were the only two phyla with increasing population in the 500 μg L−1-exposed reactors. This was also supported by an observation of no major change in the community structure. The reactors could remove >60% of CPC at initial concentrations of 50–500 μg L−1, primarily by adsorption and biodegradation. The enrichment of Rhodobacter and Asticcacaulis genus might contribute to CPC biodegradation and emerge as a potential microbial niche for the removal of CPC.	en_US
dc.relation.ispartof	International Biodeterioration and Biodegradation	en_US
dc.relation.isbasedon	10.1016/j.ibiod.2018.11.006	en_US
dc.rights	info:eu-repo/semantics/embargoedAccess
dc.subject.classification	Biotechnology	en_US
dc.title	Impacts of antiseptic cetylpyridinium chloride on microbiome and its removal efficiency in aerobic activated sludge	en_US
dc.type	Journal Article
utslib.citation.volume	137	en_US
utslib.for	0502 Environmental Science and Management	en_US
utslib.for	0601 Biochemistry and Cell Biology	en_US
utslib.for	05 Environmental Sciences	en_US
utslib.for	06 Biological Sciences	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	137	en_US

Abstract:

© 2018 Elsevier Ltd This study evaluated short- and long-term exposure of activated sludge (AS) microbiome to cetylpyridinium chloride (CPC), a quaternary ammonium compound widely used as biocidal additive or cationic surfactant. Toxicity assay in batch mode showed that CPC (50 μg L−1) inhibited cell growth. However, in a continuous reactor, CPC concentration in the range of 50–500 μg L−1 did not result in any observable impact on the biological activities of the AS microbiome. Similarly, 16S rRNA gene-based community profiling revealed that CPC had no observable impact on microbial diversity. At the phylogenetic structure, Rhodobacter (15 ± 7% of the total) and Asticcacaulis (9 ± 3%) were the only two phyla with increasing population in the 500 μg L−1-exposed reactors. This was also supported by an observation of no major change in the community structure. The reactors could remove >60% of CPC at initial concentrations of 50–500 μg L−1, primarily by adsorption and biodegradation. The enrichment of Rhodobacter and Asticcacaulis genus might contribute to CPC biodegradation and emerge as a potential microbial niche for the removal of CPC.

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http://hdl.handle.net/10453/129191