Carbon distribution and multi-criteria decision analysis of flexible waste biomass smouldering processing technologies.

Chen, Y; Lin, S; Qin, Y; Surawski, NC; Huang, X

Carbon distribution and multi-criteria decision analysis of flexible waste biomass smouldering processing technologies.

Chen, Y Lin, S Qin, Y Surawski, NC Huang, X

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Publisher:: Elsevier
Publication Type:: Journal Article
Citation:: Waste Manag, 2023, 167, pp. 183-193
Issue Date:: 2023-07-15

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Field	Value	Language
dc.contributor.author	Chen, Y
dc.contributor.author	Lin, S
dc.contributor.author	Qin, Y
dc.contributor.author	Surawski, NC
dc.contributor.author	Huang, X
dc.date.accessioned	2023-07-07T01:49:45Z
dc.date.available	2023-05-24
dc.date.available	2023-07-07T01:49:45Z
dc.date.issued	2023-07-15
dc.identifier.citation	Waste Manag, 2023, 167, pp. 183-193
dc.identifier.issn	0956-053X
dc.identifier.issn	1879-2456
dc.identifier.uri	http://hdl.handle.net/10453/171284
dc.description.abstract	Waste biomass treatment is a globally urgent matter which highly relates to environmental quality and human health. Here, a flexible suite of smouldering-based waste biomass processing technologies is developed and four processing strategies: (a) full smouldering, (b) partial smouldering, (c) full smouldering with a flame, and (d) partial smouldering with a flame, are proposed. The gaseous, liquid, and solid products of each strategy are quantified under various airflow rates. Then, a multi-criteria analysis in terms of environmental impact, carbon sequestration, waste removal efficiency, and by-product value is performed. The results show that full smouldering achieves the highest removal efficiency but generates significant greenhouse and toxic gases. Partial smouldering effectively generates stable biochar, sequesters over 30% carbon, and therefore reduces the greenhouse gases to the atmosphere. By applying a self-sustained flame, the toxic gases are significantly reduced to clean smouldering emissions. Finally, the process of partial smouldering with a flame is recommended to process the waste biomass that can sequester more carbon as biochar, minimize carbon emissions and mitigate the pollution. And the process of full smouldering with a flame is preferred to maximally reduce the waste volume with minimum environmental impact. This work enriches strategies for carbon sequestration and environmentally friendly waste biomass processing technologies.
dc.format	Print-Electronic
dc.language	eng
dc.publisher	Elsevier
dc.relation.ispartof	Waste Manag
dc.relation.isbasedon	10.1016/j.wasman.2023.05.038
dc.rights	info:eu-repo/semantics/embargoedAccess
dc.subject	0907 Environmental Engineering
dc.subject.classification	Environmental Sciences
dc.subject.classification	3302 Building
dc.subject.classification	4004 Chemical engineering
dc.subject.classification	4104 Environmental management
dc.subject.mesh	Humans
dc.subject.mesh	Carbon
dc.subject.mesh	Biomass
dc.subject.mesh	Gases
dc.subject.mesh	Decision Support Techniques
dc.subject.mesh	Humans
dc.subject.mesh	Carbon
dc.subject.mesh	Gases
dc.subject.mesh	Biomass
dc.subject.mesh	Decision Support Techniques
dc.title	Carbon distribution and multi-criteria decision analysis of flexible waste biomass smouldering processing technologies.
dc.type	Journal Article
utslib.citation.volume	167
utslib.location.activity	United States
utslib.for	0907 Environmental Engineering
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	2025-07-01T00:00:00+1000Z
dc.date.updated	2023-07-07T01:49:44Z
pubs.publication-status	Published
pubs.volume	167

Abstract:

Waste biomass treatment is a globally urgent matter which highly relates to environmental quality and human health. Here, a flexible suite of smouldering-based waste biomass processing technologies is developed and four processing strategies: (a) full smouldering, (b) partial smouldering, (c) full smouldering with a flame, and (d) partial smouldering with a flame, are proposed. The gaseous, liquid, and solid products of each strategy are quantified under various airflow rates. Then, a multi-criteria analysis in terms of environmental impact, carbon sequestration, waste removal efficiency, and by-product value is performed. The results show that full smouldering achieves the highest removal efficiency but generates significant greenhouse and toxic gases. Partial smouldering effectively generates stable biochar, sequesters over 30% carbon, and therefore reduces the greenhouse gases to the atmosphere. By applying a self-sustained flame, the toxic gases are significantly reduced to clean smouldering emissions. Finally, the process of partial smouldering with a flame is recommended to process the waste biomass that can sequester more carbon as biochar, minimize carbon emissions and mitigate the pollution. And the process of full smouldering with a flame is preferred to maximally reduce the waste volume with minimum environmental impact. This work enriches strategies for carbon sequestration and environmentally friendly waste biomass processing technologies.

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http://hdl.handle.net/10453/171284