Smouldering organic waste removal technology with smoke emissions cleaned by self-sustained flame

Chen, Y; Lin, S; Liang, Z; Surawski, NC; Huang, X

Smouldering organic waste removal technology with smoke emissions cleaned by self-sustained flame

Chen, Y Lin, S Liang, Z Surawski, NC Huang, X

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Publisher:: Elsevier BV
Publication Type:: Journal Article
Citation:: Journal of Cleaner Production, 2022, 362, pp. 132363
Issue Date:: 2022-08-15

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Field	Value	Language
dc.contributor.author	Chen, Y
dc.contributor.author	Lin, S
dc.contributor.author	Liang, Z
dc.contributor.author	Surawski, NC
dc.contributor.author	Huang, X
dc.date.accessioned	2022-07-18T03:18:16Z
dc.date.available	2022-07-18T03:18:16Z
dc.date.issued	2022-08-15
dc.identifier.citation	Journal of Cleaner Production, 2022, 362, pp. 132363
dc.identifier.issn	0959-6526
dc.identifier.uri	http://hdl.handle.net/10453/158981
dc.description.abstract	Smouldering is slow, low-temperature and flameless, and has been potentially regarded as an alternative for organic waste removal technology. However, as an incomplete combustion process, toxic smoke and pollution from the smouldering are significant concerns that limit its popularization. This work applies a newly developed smouldering-based waste removal technology to investigate the removal of coffee waste, wood waste, and organic soil (simulated sludge) via using a flame to clean smouldering emissions at different airflow velocities (3–24 mm/s). Once ignited from the top, the smouldering front first propagates downwards where a stable flame situated above could be piloted and sustained to purify the smouldering emissions until the smouldering front reached the bottom of the fuel bed. The efficiency of pollution mitigation was demonstrated by significantly lower CO and VOCs emission after purification by self-sustained flame. The equivalent critical mass flux of flammable gases required for igniting the smouldering emissions is 0.5 g/m2∙s, regardless of the fuel type. The smouldering temperature, propagation rate and burning flux all increase with the airflow velocity but are also slightly sensitive to the type of waste. This work enriches strategies for the clean treatment of smouldering emissions and promotes an energy efficient and environmentally friendly method for organic waste removal.
dc.language	en
dc.publisher	Elsevier BV
dc.relation.ispartof	Journal of Cleaner Production
dc.relation.isbasedon	10.1016/j.jclepro.2022.132363
dc.rights	info:eu-repo/semantics/embargoedAccess
dc.subject	0907 Environmental Engineering, 0910 Manufacturing Engineering, 0915 Interdisciplinary Engineering
dc.subject.classification	Environmental Sciences
dc.title	Smouldering organic waste removal technology with smoke emissions cleaned by self-sustained flame
dc.type	Journal Article
utslib.citation.volume	362
utslib.for	0907 Environmental Engineering
utslib.for	0910 Manufacturing Engineering
utslib.for	0915 Interdisciplinary 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	open_access	*
utslib.copyright.embargo	2024-05-01T00:00:00+1000Z
dc.date.updated	2022-07-18T03:18:14Z
pubs.publication-status	Accepted
pubs.volume	362

Abstract:

Smouldering is slow, low-temperature and flameless, and has been potentially regarded as an alternative for organic waste removal technology. However, as an incomplete combustion process, toxic smoke and pollution from the smouldering are significant concerns that limit its popularization. This work applies a newly developed smouldering-based waste removal technology to investigate the removal of coffee waste, wood waste, and organic soil (simulated sludge) via using a flame to clean smouldering emissions at different airflow velocities (3–24 mm/s). Once ignited from the top, the smouldering front first propagates downwards where a stable flame situated above could be piloted and sustained to purify the smouldering emissions until the smouldering front reached the bottom of the fuel bed. The efficiency of pollution mitigation was demonstrated by significantly lower CO and VOCs emission after purification by self-sustained flame. The equivalent critical mass flux of flammable gases required for igniting the smouldering emissions is 0.5 g/m2∙s, regardless of the fuel type. The smouldering temperature, propagation rate and burning flux all increase with the airflow velocity but are also slightly sensitive to the type of waste. This work enriches strategies for the clean treatment of smouldering emissions and promotes an energy efficient and environmentally friendly method for organic waste removal.

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http://hdl.handle.net/10453/158981