Enhancing methane production from anaerobic digestion of secondary sludge through lignosulfonate addition: Feasibility, mechanisms, and implications.

Wang, Z; Li, X; Liu, H; Zhou, T; Li, J; Siddiqui, MA; Lin, CSK; Rafe Hatshan, M; Huang, S; Cairney, JM; Wang, Q

Enhancing methane production from anaerobic digestion of secondary sludge through lignosulfonate addition: Feasibility, mechanisms, and implications.

Wang, Z

Li, X

Liu, H Zhou, T Li, J Siddiqui, MA Lin, CSK Rafe Hatshan, M Huang, S Cairney, JM Wang, Q

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Publisher:: Elsevier BV
Publication Type:: Journal Article
Citation:: Bioresour Technol, 2023, 390, pp. 129868
Issue Date:: 2023-12

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Field	Value	Language
dc.contributor.author	Wang, Z https://orcid.org/0000-0002-8227-2602
dc.contributor.author	Li, X https://orcid.org/0000-0003-1768-9556
dc.contributor.author	Liu, H
dc.contributor.author	Zhou, T
dc.contributor.author	Li, J
dc.contributor.author	Siddiqui, MA
dc.contributor.author	Lin, CSK
dc.contributor.author	Rafe Hatshan, M
dc.contributor.author	Huang, S
dc.contributor.author	Cairney, JM
dc.contributor.author	Wang, Q https://orcid.org/0000-0002-5744-2331
dc.date.accessioned	2023-11-20T03:48:37Z
dc.date.available	2023-10-10
dc.date.available	2023-11-20T03:48:37Z
dc.date.issued	2023-12
dc.identifier.citation	Bioresour Technol, 2023, 390, pp. 129868
dc.identifier.issn	0960-8524
dc.identifier.issn	1873-2976
dc.identifier.uri	http://hdl.handle.net/10453/173483
dc.description.abstract	This study explores the feasibility of using lignosulfonate, a byproduct of the pulp and paper industry, to facilitate sludge anaerobic digestion. Biochemical methane potential assays revealed that the maximum methane production was achieved at 60 mg/g volatile solids (VS) lignosulfonate, 22.18 % higher than the control. One substrate model demonstrated that 60 mg/g VS lignosulfonate boosted the hydrolysis rate, biochemical methane potential, and degradation extent of secondary sludge by 19.12 %, 21.87 %, and 21.11 %, respectively, compared to the control. Mechanisms unveiled that lignosulfonate destroyed sludge stability, promoted organic matter release, and enhanced subsequent hydrolysis, acidification, and methanogenesis by up to 31.30 %, 74.42 % and 28.16 %, respectively. Phytotoxicity assays confirmed that lignosulfonate promoted seed germination and root development of lettuce and Chinese cabbage, with seed germination index reaching 170 ± 10 % and 220 ± 22 %, respectively. The findings suggest that lignosulfonate addition offers a sustainable approach to sludge treatment, guiding effective management practices.
dc.format	Print-Electronic
dc.language	eng
dc.publisher	Elsevier BV
dc.relation	http://purl.org/au-research/grants/arc/DP200100933
dc.relation	http://purl.org/au-research/grants/arc/FT200100264
dc.relation.ispartof	Bioresour Technol
dc.relation.isbasedon	10.1016/j.biortech.2023.129868
dc.rights	info:eu-repo/semantics/embargoedAccess
dc.subject.classification	Biotechnology
dc.subject.classification	3001 Agricultural biotechnology
dc.subject.classification	3106 Industrial biotechnology
dc.subject.classification	3107 Microbiology
dc.subject.mesh	Sewage
dc.subject.mesh	Anaerobiosis
dc.subject.mesh	Feasibility Studies
dc.subject.mesh	Waste Disposal, Fluid
dc.subject.mesh	Bioreactors
dc.subject.mesh	Methane
dc.subject.mesh	Methane
dc.subject.mesh	Feasibility Studies
dc.subject.mesh	Bioreactors
dc.subject.mesh	Sewage
dc.subject.mesh	Waste Disposal, Fluid
dc.subject.mesh	Anaerobiosis
dc.title	Enhancing methane production from anaerobic digestion of secondary sludge through lignosulfonate addition: Feasibility, mechanisms, and implications.
dc.type	Journal Article
utslib.citation.volume	390
utslib.location.activity	England
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	embargoed	*
utslib.copyright.embargo	2025-10-01T00:00:00+1000Z
dc.date.updated	2023-11-20T03:48:35Z
pubs.publication-status	Published
pubs.volume	390

Abstract:

This study explores the feasibility of using lignosulfonate, a byproduct of the pulp and paper industry, to facilitate sludge anaerobic digestion. Biochemical methane potential assays revealed that the maximum methane production was achieved at 60 mg/g volatile solids (VS) lignosulfonate, 22.18 % higher than the control. One substrate model demonstrated that 60 mg/g VS lignosulfonate boosted the hydrolysis rate, biochemical methane potential, and degradation extent of secondary sludge by 19.12 %, 21.87 %, and 21.11 %, respectively, compared to the control. Mechanisms unveiled that lignosulfonate destroyed sludge stability, promoted organic matter release, and enhanced subsequent hydrolysis, acidification, and methanogenesis by up to 31.30 %, 74.42 % and 28.16 %, respectively. Phytotoxicity assays confirmed that lignosulfonate promoted seed germination and root development of lettuce and Chinese cabbage, with seed germination index reaching 170 ± 10 % and 220 ± 22 %, respectively. The findings suggest that lignosulfonate addition offers a sustainable approach to sludge treatment, guiding effective management practices.

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http://hdl.handle.net/10453/173483