Improved methane production from waste activated sludge by combining free ammonia with heat pretreatment: Performance, mechanisms and applications

Liu, X; Xu, Q; Wang, D; Zhao, J; Wu, Y; Liu, Y; Ni, BJ; Wang, Q; Zeng, G; Li, X; Yang, Q

Improved methane production from waste activated sludge by combining free ammonia with heat pretreatment: Performance, mechanisms and applications

Liu, X Xu, Q Wang, D Zhao, J Wu, Y Liu, Y

Ni, BJ

Wang, Q

Zeng, G Li, X Yang, Q

Permalink

Publication Type:: Journal Article
Citation:: Bioresource Technology, 2018, 268 pp. 230 - 236
Issue Date:: 2018-11-01

Closed Access

	Filename	Description	Size
	CH4.pdf	Published Version	1.64 MB	Adobe PDF	View/Open

Copyright Clearance Process

Recently Added
In Progress
Closed Access

This item is closed access and not available.

Full metadata record

Field	Value	Language
dc.contributor.author	Liu, X	en_US
dc.contributor.author	Xu, Q	en_US
dc.contributor.author	Wang, D	en_US
dc.contributor.author	Zhao, J	en_US
dc.contributor.author	Wu, Y	en_US
dc.contributor.author	Liu, Y https://orcid.org/0000-0001-6677-7961	en_US
dc.contributor.author	Ni, BJ https://orcid.org/0000-0002-1129-7837	en_US
dc.contributor.author	Wang, Q https://orcid.org/0000-0002-5744-2331	en_US
dc.contributor.author	Zeng, G	en_US
dc.contributor.author	Li, X	en_US
dc.contributor.author	Yang, Q	en_US
dc.date.available	2018-07-21	en_US
dc.date.issued	2018-11-01	en_US
dc.identifier.citation	Bioresource Technology, 2018, 268 pp. 230 - 236	en_US
dc.identifier.issn	0960-8524	en_US
dc.identifier.uri	http://hdl.handle.net/10453/131850
dc.description.abstract	© 2018 Elsevier Ltd Anaerobic digestion of waste activated sludge (WAS) is often limited by low hydrolysis efficiencies and poor methane potentials. This work presents a novel pretreatment technology for WAS anaerobic digestion, i.e., combining free ammonia with heat pretreatment (CFHP). Experimental results showed that compared with control, solo free ammonia (135.4 mg NH3-N/L) and solo heat (70 °C) pretreatment, the combined free ammonia and heat (135.4 mg NH3-N/L with 70 °C) obtained 52.2%, 25.5% and 30.2% faster in hydrolysis rate and 25.2%, 17.9% and 16.5% higher in biochemical methane potential, respectively. Mechanism investigations showed that the combined pretreatment not only largely facilitated the disintegration of WAS but also increased the proportion of biodegradable organic matters, thereby providing better contract between biodegradable organics and the anaerobic microbes for methane production. Considering its effectiveness and renewability, the combined pretreatment is an attractive technology for the application in real-world situations.	en_US
dc.relation.ispartof	Bioresource Technology	en_US
dc.relation.isbasedon	10.1016/j.biortech.2018.07.109	en_US
dc.subject.classification	Biotechnology	en_US
dc.subject.mesh	Ammonia	en_US
dc.subject.mesh	Methane	en_US
dc.subject.mesh	Sewage	en_US
dc.subject.mesh	Waste Disposal, Fluid	en_US
dc.subject.mesh	Anaerobiosis	en_US
dc.subject.mesh	Hot Temperature	en_US
dc.title	Improved methane production from waste activated sludge by combining free ammonia with heat pretreatment: Performance, mechanisms and applications	en_US
dc.type	Journal Article
utslib.citation.volume	268	en_US
utslib.for	0904 Chemical Engineering	en_US
utslib.for	0907 Environmental Engineering	en_US
pubs.embargo.period	Not known	en_US
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.publication-status	Published	en_US
pubs.volume	268	en_US

Abstract:

© 2018 Elsevier Ltd Anaerobic digestion of waste activated sludge (WAS) is often limited by low hydrolysis efficiencies and poor methane potentials. This work presents a novel pretreatment technology for WAS anaerobic digestion, i.e., combining free ammonia with heat pretreatment (CFHP). Experimental results showed that compared with control, solo free ammonia (135.4 mg NH3-N/L) and solo heat (70 °C) pretreatment, the combined free ammonia and heat (135.4 mg NH3-N/L with 70 °C) obtained 52.2%, 25.5% and 30.2% faster in hydrolysis rate and 25.2%, 17.9% and 16.5% higher in biochemical methane potential, respectively. Mechanism investigations showed that the combined pretreatment not only largely facilitated the disintegration of WAS but also increased the proportion of biodegradable organic matters, thereby providing better contract between biodegradable organics and the anaerobic microbes for methane production. Considering its effectiveness and renewability, the combined pretreatment is an attractive technology for the application in real-world situations.

Please use this identifier to cite or link to this item:

http://hdl.handle.net/10453/131850