Unravelling the impacts of perfluorooctanoic acid on anaerobic sludge digestion process.

Wang, C; Wu, L; Zhang, Y-T; Wei, W; Ni, B-J

Unravelling the impacts of perfluorooctanoic acid on anaerobic sludge digestion process.

Wang, C Wu, L Zhang, Y-T Wei, W

Ni, B-J

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Publisher:: Elsevier
Publication Type:: Journal Article
Citation:: Science of the Total Environment, 2021, 796, pp. 1-8
Issue Date:: 2021-11-20

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Field	Value	Language
dc.contributor.author	Wang, C
dc.contributor.author	Wu, L
dc.contributor.author	Zhang, Y-T
dc.contributor.author	Wei, W https://orcid.org/0000-0001-5613-337X
dc.contributor.author	Ni, B-J
dc.date.accessioned	2022-05-12T05:58:12Z
dc.date.available	2021-07-12
dc.date.available	2022-05-12T05:58:12Z
dc.date.issued	2021-11-20
dc.identifier.citation	Science of the Total Environment, 2021, 796, pp. 1-8
dc.identifier.issn	0048-9697
dc.identifier.issn	1879-1026
dc.identifier.uri	http://hdl.handle.net/10453/157288
dc.description.abstract	Perfluorooctanoic acid (PFOA) is a type of persistent organic pollutant that has been detected in wastewater treatment systems, subsequently entering the waste activated sludge (WAS) anaerobic digesters. Nevertheless, how PFOA affects the anaerobic digestion of WAS has never been reported till now. In this study, a series of batch digesters were set up to assess the performance of the anaerobic sludge digestion processes with exposures to different levels of PFOA. Experimental results revealed that the increased PFOA concentration (3-60 μg/g-TS) caused the 11.1-19.2% decrease in methane production than the control. Correspondingly, the relative abundances of several key microbes related to acidification (e.g., Longilinea sp.) and methanation (e.g., Methanosaeta sp.) decreased when exposed to PFOA, as demonstrated by microbial community analysis. Further investigations based on modelling and intermediate metabolites analysis confirmed the inhibition of acidification and methanation caused by PFOA, thus decreasing the methane production potential of WAS in anaerobic digestion.
dc.format	Print-Electronic
dc.language	eng
dc.publisher	Elsevier
dc.relation	http://purl.org/au-research/grants/arc/FT160100195
dc.relation.ispartof	Science of the Total Environment
dc.relation.isbasedon	10.1016/j.scitotenv.2021.149057
dc.rights	info:eu-repo/semantics/closedAccess
dc.subject.classification	Environmental Sciences
dc.subject.mesh	Anaerobiosis
dc.subject.mesh	Bioreactors
dc.subject.mesh	Caprylates
dc.subject.mesh	Digestion
dc.subject.mesh	Fluorocarbons
dc.subject.mesh	Methane
dc.subject.mesh	Sewage
dc.subject.mesh	Waste Disposal, Fluid
dc.subject.mesh	Anaerobiosis
dc.subject.mesh	Bioreactors
dc.subject.mesh	Caprylates
dc.subject.mesh	Digestion
dc.subject.mesh	Fluorocarbons
dc.subject.mesh	Methane
dc.subject.mesh	Sewage
dc.subject.mesh	Waste Disposal, Fluid
dc.subject.mesh	Caprylates
dc.subject.mesh	Methane
dc.subject.mesh	Fluorocarbons
dc.subject.mesh	Bioreactors
dc.subject.mesh	Sewage
dc.subject.mesh	Waste Disposal, Fluid
dc.subject.mesh	Anaerobiosis
dc.subject.mesh	Digestion
dc.title	Unravelling the impacts of perfluorooctanoic acid on anaerobic sludge digestion process.
dc.type	Journal Article
utslib.citation.volume	796
utslib.location.activity	Netherlands
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	*
pubs.consider-herdc	false
dc.date.updated	2022-05-12T05:58:09Z
pubs.publication-status	Published
pubs.volume	796

Abstract:

Perfluorooctanoic acid (PFOA) is a type of persistent organic pollutant that has been detected in wastewater treatment systems, subsequently entering the waste activated sludge (WAS) anaerobic digesters. Nevertheless, how PFOA affects the anaerobic digestion of WAS has never been reported till now. In this study, a series of batch digesters were set up to assess the performance of the anaerobic sludge digestion processes with exposures to different levels of PFOA. Experimental results revealed that the increased PFOA concentration (3-60 μg/g-TS) caused the 11.1-19.2% decrease in methane production than the control. Correspondingly, the relative abundances of several key microbes related to acidification (e.g., Longilinea sp.) and methanation (e.g., Methanosaeta sp.) decreased when exposed to PFOA, as demonstrated by microbial community analysis. Further investigations based on modelling and intermediate metabolites analysis confirmed the inhibition of acidification and methanation caused by PFOA, thus decreasing the methane production potential of WAS in anaerobic digestion.

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http://hdl.handle.net/10453/157288