Enhanced high-quality biomethane production from anaerobic digestion of primary sludge by corn stover biochar.

Wei, W; Guo, W; Ngo, HH; Mannina, G; Wang, D; Chen, X; Liu, Y; Peng, L; Ni, B-J

Enhanced high-quality biomethane production from anaerobic digestion of primary sludge by corn stover biochar.

Wei, W Guo, W

Ngo, HH Mannina, G Wang, D Chen, X Liu, Y

Peng, L Ni, B-J

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Publisher:: Elsevier BV
Publication Type:: Journal Article
Citation:: Bioresource technology, 2020, 306, pp. 123159
Issue Date:: 2020-03-07

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Field	Value	Language
dc.contributor.author	Wei, W
dc.contributor.author	Guo, W https://orcid.org/0000-0001-5542-2858
dc.contributor.author	Ngo, HH
dc.contributor.author	Mannina, G
dc.contributor.author	Wang, D
dc.contributor.author	Chen, X
dc.contributor.author	Liu, Y https://orcid.org/0000-0001-6677-7961
dc.contributor.author	Peng, L
dc.contributor.author	Ni, B-J
dc.date.accessioned	2020-07-19T09:31:15Z
dc.date.available	2020-03-05
dc.date.available	2020-07-19T09:31:15Z
dc.date.issued	2020-03-07
dc.identifier.citation	Bioresource technology, 2020, 306, pp. 123159
dc.identifier.issn	0960-8524
dc.identifier.issn	1873-2976
dc.identifier.uri	http://hdl.handle.net/10453/141801
dc.description.abstract	This study conducted batch and continuous tests to reveal the feasibility of corn stover biochar on improving anaerobic digestion of primary sludge (PS). Dosing biochar (1.82, 2.55 and 3.06 g/g Total Solids (TS)) in digester improved methane content increasing from 67.5% to 81.3-87.3% and enhanced methane production by 8.6-17.8%. Model analysis indicated that biochar accelerated PS hydrolysis and enhanced methane potential of PS. The mechanistic studies showed that biochar enhanced process stability provided by strong buffering capacity and alleviated NH3 inhibition. In continuous test over 116 days, the volatile solids (VS) destruction in the biochar-dosed digester increased by 14.9%, resulting in a 14% reduction in the volume of digestate for disposal. Biochar changed microbial community in an expected direction for anaerobic digestion. This work suggests that biochar technology would apply to co-digestion of WAS and PS to maximize the energy recovery and sludge reduction from the two sludge streams.
dc.format	Print-Electronic
dc.language	eng
dc.publisher	Elsevier BV
dc.relation	http://purl.org/au-research/grants/arc/FT160100195
dc.relation.ispartof	Bioresource technology
dc.relation.hasversion	Accepted manuscript version	en
dc.relation.isbasedon	10.1016/j.biortech.2020.123159
dc.rights	info:eu-repo/semantics/embargoedAccess
dc.subject.classification	Biotechnology
dc.title	Enhanced high-quality biomethane production from anaerobic digestion of primary sludge by corn stover biochar.
dc.type	Journal Article
utslib.citation.volume	306
utslib.location.activity	England
pubs.organisational-group	/University of Technology Sydney/Faculty of Engineering and Information Technology
pubs.organisational-group	/University of Technology Sydney/Strength - CTWW - Centre for Technology in Water and Wastewater Treatment
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
utslib.copyright.status	open_access	*
utslib.copyright.embargo	2022-03-07T00:00:00+1000Z
dc.date.updated	2020-07-19T09:31:09Z
pubs.publication-status	Published
pubs.volume	306

Abstract:

This study conducted batch and continuous tests to reveal the feasibility of corn stover biochar on improving anaerobic digestion of primary sludge (PS). Dosing biochar (1.82, 2.55 and 3.06 g/g Total Solids (TS)) in digester improved methane content increasing from 67.5% to 81.3-87.3% and enhanced methane production by 8.6-17.8%. Model analysis indicated that biochar accelerated PS hydrolysis and enhanced methane potential of PS. The mechanistic studies showed that biochar enhanced process stability provided by strong buffering capacity and alleviated NH3 inhibition. In continuous test over 116 days, the volatile solids (VS) destruction in the biochar-dosed digester increased by 14.9%, resulting in a 14% reduction in the volume of digestate for disposal. Biochar changed microbial community in an expected direction for anaerobic digestion. This work suggests that biochar technology would apply to co-digestion of WAS and PS to maximize the energy recovery and sludge reduction from the two sludge streams.

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http://hdl.handle.net/10453/141801