Polystyrene microplastics and nanoplastics distinctively affect anaerobic sludge treatment for hydrogen and methane production.

Wang, C; Wei, W; Chen, Z; Wang, Y; Chen, X; Ni, B-J

Polystyrene microplastics and nanoplastics distinctively affect anaerobic sludge treatment for hydrogen and methane production.

Wang, C Wei, W Chen, Z

Wang, Y Chen, X Ni, B-J

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Publisher:: ELSEVIER
Publication Type:: Journal Article
Citation:: Sci Total Environ, 2022, 850, pp. 158085
Issue Date:: 2022-12-01

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Field	Value	Language
dc.contributor.author	Wang, C
dc.contributor.author	Wei, W
dc.contributor.author	Chen, Z https://orcid.org/0000-0003-0627-0856
dc.contributor.author	Wang, Y
dc.contributor.author	Chen, X
dc.contributor.author	Ni, B-J
dc.date.accessioned	2023-03-23T01:47:37Z
dc.date.available	2022-08-13
dc.date.available	2023-03-23T01:47:37Z
dc.date.issued	2022-12-01
dc.identifier.citation	Sci Total Environ, 2022, 850, pp. 158085
dc.identifier.issn	0048-9697
dc.identifier.issn	1879-1026
dc.identifier.uri	http://hdl.handle.net/10453/168142
dc.description.abstract	Microplastics and nanoplastics generally accumulated in waste activated sludge (WAS) after biological wastewater treatment. Currently, researches mainly focused on how plastics affected a particular sludge treatment method, without the comparison of different sludge systems. Herein, distinct responses of hydrogen-producing and methane-producing sludge systems were comprehensively evaluated with polystyrene microplastics (PS-MPs) and nanoplastics (PS-NPs) existence. Experimental results showed that PS particles would stimulate inhibition on anaerobic gas production except that PS-MPs were conducive to hydrogen accumulation, which was caused by the enhanced solubilization. Mechanistic investigation demonstrated that severe inhibition of PS-NPs to hydrogen production was derived from the excessively inhibitory hydrolysis despite of improving solubilization. Varying degrees of inhibition to acidification and methanation collectively contributed to reduced methane accumulation with exposure to PS-MPs and PS-NPs. Excessive oxidative stress would be generated in the presence of PS-MPs or PS-NPs, deteriorating microbial activities and richness of species responsible for hydrogen or methane production.
dc.format	Print-Electronic
dc.language	eng
dc.publisher	ELSEVIER
dc.relation	http://purl.org/au-research/grants/arc/DP220101139
dc.relation	http://purl.org/au-research/grants/arc/DE220100530
dc.relation.ispartof	Sci Total Environ
dc.relation.isbasedon	10.1016/j.scitotenv.2022.158085
dc.rights	info:eu-repo/semantics/closedAccess
dc.subject.classification	Environmental Sciences
dc.subject.mesh	Anaerobiosis
dc.subject.mesh	Hydrogen
dc.subject.mesh	Methane
dc.subject.mesh	Microplastics
dc.subject.mesh	Plastics
dc.subject.mesh	Polystyrenes
dc.subject.mesh	Sewage
dc.subject.mesh	Waste Disposal, Fluid
dc.subject.mesh	Hydrogen
dc.subject.mesh	Methane
dc.subject.mesh	Polystyrenes
dc.subject.mesh	Plastics
dc.subject.mesh	Sewage
dc.subject.mesh	Waste Disposal, Fluid
dc.subject.mesh	Anaerobiosis
dc.subject.mesh	Microplastics
dc.subject.mesh	Anaerobiosis
dc.subject.mesh	Hydrogen
dc.subject.mesh	Methane
dc.subject.mesh	Microplastics
dc.subject.mesh	Plastics
dc.subject.mesh	Polystyrenes
dc.subject.mesh	Sewage
dc.subject.mesh	Waste Disposal, Fluid
dc.title	Polystyrene microplastics and nanoplastics distinctively affect anaerobic sludge treatment for hydrogen and methane production.
dc.type	Journal Article
utslib.citation.volume	850
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	*
dc.date.updated	2023-03-23T01:47:34Z
pubs.publication-status	Published
pubs.volume	850

Abstract:

Microplastics and nanoplastics generally accumulated in waste activated sludge (WAS) after biological wastewater treatment. Currently, researches mainly focused on how plastics affected a particular sludge treatment method, without the comparison of different sludge systems. Herein, distinct responses of hydrogen-producing and methane-producing sludge systems were comprehensively evaluated with polystyrene microplastics (PS-MPs) and nanoplastics (PS-NPs) existence. Experimental results showed that PS particles would stimulate inhibition on anaerobic gas production except that PS-MPs were conducive to hydrogen accumulation, which was caused by the enhanced solubilization. Mechanistic investigation demonstrated that severe inhibition of PS-NPs to hydrogen production was derived from the excessively inhibitory hydrolysis despite of improving solubilization. Varying degrees of inhibition to acidification and methanation collectively contributed to reduced methane accumulation with exposure to PS-MPs and PS-NPs. Excessive oxidative stress would be generated in the presence of PS-MPs or PS-NPs, deteriorating microbial activities and richness of species responsible for hydrogen or methane production.

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http://hdl.handle.net/10453/168142