A novel free ammonia based pretreatment technology to enhance anaerobic methane production from primary sludge.

Wei, W; Zhou, X; Xie, G-J; Duan, H; Wang, Q

A novel free ammonia based pretreatment technology to enhance anaerobic methane production from primary sludge.

Wei, W

Zhou, X Xie, G-J Duan, H Wang, Q

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Publisher:: Wiley
Publication Type:: Journal Article
Citation:: Biotechnology and Bioengineering, 2017, 114, (10), pp. 2245-2252
Issue Date:: 2017-10

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Field	Value	Language
dc.contributor.author	Wei, W https://orcid.org/0000-0001-5613-337X
dc.contributor.author	Zhou, X
dc.contributor.author	Xie, G-J
dc.contributor.author	Duan, H
dc.contributor.author	Wang, Q https://orcid.org/0000-0002-5744-2331
dc.date.accessioned	2022-08-19T02:41:18Z
dc.date.available	2017-06-09
dc.date.available	2022-08-19T02:41:18Z
dc.date.issued	2017-10
dc.identifier.citation	Biotechnology and Bioengineering, 2017, 114, (10), pp. 2245-2252
dc.identifier.issn	0006-3592
dc.identifier.issn	1097-0290
dc.identifier.uri	http://hdl.handle.net/10453/160493
dc.description.abstract	This study proposed a novel free ammonia (FA, i.e., NH3 ) pretreatment technology to enhance anaerobic methane production from primary sludge for the first time. The solubilization of primary sludge was substantially enhanced following 24 h FA pretreatment (250-680 mg NH3 -N/L), by which the release of soluble chemical oxygen demand (SCOD) (i.e., 0.4 mg SCOD/mg VS added; VS: volatile solids) was approximately 10 times as much as that without pretreatment (i.e., 0.03 mg SCOD/mg VS added). Then, biochemical methane potential (BMP) tests demonstrated that FA pretreatment of 250-680 mg NH3 -N/L was capable of enhancing anaerobic methane production while the digestion time was more than 7 days. Model based analysis indicated that the improved anaerobic methane production was due to an increased biochemical methane potential (B0 ) of 8-17% (i.e., from 331 to 357-387 L CH4 /kg VS added), with the highest B0 achieved at 420 mg NH3 -N/L pretreatment. However, FA pretreatment of 250-680 mg NH3 -N/L decreased hydrolysis rate (k) by 24-38% compared with control (i.e., from 0.29 d-1 to 0.18-0.22 d-1 ), which explained the lower methane production over the first 7 days' digestion period. Economic analysis and environmental evaluation demonstrated that FA pretreatment technology was environmentally friendly and economically favorable. Biotechnol. Bioeng. 2017;114: 2245-2252. © 2017 Wiley Periodicals, Inc.
dc.format	Print-Electronic
dc.language	eng
dc.publisher	Wiley
dc.relation.ispartof	Biotechnology and Bioengineering
dc.relation.isbasedon	10.1002/bit.26348
dc.rights	info:eu-repo/semantics/closedAccess
dc.subject.classification	Biotechnology
dc.subject.mesh	Ammonia
dc.subject.mesh	Anaerobiosis
dc.subject.mesh	Bacteria, Anaerobic
dc.subject.mesh	Biological Oxygen Demand Analysis
dc.subject.mesh	Bioreactors
dc.subject.mesh	Cell Proliferation
dc.subject.mesh	Methane
dc.subject.mesh	Oxygen
dc.subject.mesh	Sewage
dc.subject.mesh	Solubility
dc.subject.mesh	Waste Water
dc.subject.mesh	Water Purification
dc.subject.mesh	Ammonia
dc.subject.mesh	Anaerobiosis
dc.subject.mesh	Bacteria, Anaerobic
dc.subject.mesh	Biological Oxygen Demand Analysis
dc.subject.mesh	Bioreactors
dc.subject.mesh	Cell Proliferation
dc.subject.mesh	Methane
dc.subject.mesh	Oxygen
dc.subject.mesh	Sewage
dc.subject.mesh	Solubility
dc.subject.mesh	Waste Water
dc.subject.mesh	Water Purification
dc.subject.mesh	Bacteria, Anaerobic
dc.subject.mesh	Oxygen
dc.subject.mesh	Ammonia
dc.subject.mesh	Methane
dc.subject.mesh	Bioreactors
dc.subject.mesh	Sewage
dc.subject.mesh	Water Purification
dc.subject.mesh	Cell Proliferation
dc.subject.mesh	Anaerobiosis
dc.subject.mesh	Solubility
dc.subject.mesh	Biological Oxygen Demand Analysis
dc.subject.mesh	Waste Water
dc.title	A novel free ammonia based pretreatment technology to enhance anaerobic methane production from primary sludge.
dc.type	Journal Article
utslib.citation.volume	114
utslib.location.activity	United States
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	2022-08-19T02:41:17Z
pubs.issue	10
pubs.publication-status	Published
pubs.volume	114
utslib.citation.issue	10

Abstract:

This study proposed a novel free ammonia (FA, i.e., NH3 ) pretreatment technology to enhance anaerobic methane production from primary sludge for the first time. The solubilization of primary sludge was substantially enhanced following 24 h FA pretreatment (250-680 mg NH3 -N/L), by which the release of soluble chemical oxygen demand (SCOD) (i.e., 0.4 mg SCOD/mg VS added; VS: volatile solids) was approximately 10 times as much as that without pretreatment (i.e., 0.03 mg SCOD/mg VS added). Then, biochemical methane potential (BMP) tests demonstrated that FA pretreatment of 250-680 mg NH3 -N/L was capable of enhancing anaerobic methane production while the digestion time was more than 7 days. Model based analysis indicated that the improved anaerobic methane production was due to an increased biochemical methane potential (B0 ) of 8-17% (i.e., from 331 to 357-387 L CH4 /kg VS added), with the highest B0 achieved at 420 mg NH3 -N/L pretreatment. However, FA pretreatment of 250-680 mg NH3 -N/L decreased hydrolysis rate (k) by 24-38% compared with control (i.e., from 0.29 d-1 to 0.18-0.22 d-1 ), which explained the lower methane production over the first 7 days' digestion period. Economic analysis and environmental evaluation demonstrated that FA pretreatment technology was environmentally friendly and economically favorable. Biotechnol. Bioeng. 2017;114: 2245-2252. © 2017 Wiley Periodicals, Inc.

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http://hdl.handle.net/10453/160493