Enhanced methane production from waste activated sludge by combining calcium peroxide with ultrasonic: Performance, mechanism, and implication

Li, X; Liu, Y; Xu, Q; Liu, X; Huang, X; Yang, J; Wang, D; Wang, Q; Yang, Q

Enhanced methane production from waste activated sludge by combining calcium peroxide with ultrasonic: Performance, mechanism, and implication

Li, X Liu, Y

Xu, Q Liu, X Huang, X Yang, J Wang, D Wang, Q

Yang, Q

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Publication Type:: Journal Article
Citation:: Bioresource Technology, 2019, 279 pp. 108 - 116
Issue Date:: 2019-05-01

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Field	Value	Language
dc.contributor.author	Li, X	en_US
dc.contributor.author	Liu, Y https://orcid.org/0000-0001-6677-7961	en_US
dc.contributor.author	Xu, Q	en_US
dc.contributor.author	Liu, X	en_US
dc.contributor.author	Huang, X	en_US
dc.contributor.author	Yang, J	en_US
dc.contributor.author	Wang, D	en_US
dc.contributor.author	Wang, Q https://orcid.org/0000-0002-5744-2331	en_US
dc.contributor.author	Yang, Q	en_US
dc.date.available	2019-01-23	en_US
dc.date.issued	2019-05-01	en_US
dc.identifier.citation	Bioresource Technology, 2019, 279 pp. 108 - 116	en_US
dc.identifier.issn	0960-8524	en_US
dc.identifier.uri	http://hdl.handle.net/10453/131840
dc.description.abstract	© 2019 Elsevier Ltd This study reported a novel and high-efficient pretreatment method for anaerobic digestion, i.e., combining calcium peroxide (CaO2) with ultrasonic (US), by which not only the methane production was remarkably improved but also the removal of refractory organic contaminants was enhanced. Experimental results showed the optimum condition for methane production was achieved at 0.1 g CaO2/g VSS combined with US (1 W/ml, 10 min). Under this condition, the maximal methane yield of 211.90 ± 2.6 L CH4/kg VSS was obtained after 36 d of anaerobic digestion, which was respectively 1.36-fold, 1.19-fold and 1.26-fold of that from the control, solo US (1 W/ml, 10 min) and solo CaO2 (0.1 g/g VSS). Mechanism investigations revealed that CaO2 + US not only improved the disintegration of waste activated sludge (WAS) but also increased the proportion of biodegradable organic matters. Moreover, the total frequency of recalcitrant contaminants contained in WAS decreased significantly when CaO2 + US was applied.	en_US
dc.relation.ispartof	Bioresource Technology	en_US
dc.relation.isbasedon	10.1016/j.biortech.2019.01.115	en_US
dc.subject.classification	Biotechnology	en_US
dc.subject.mesh	Peroxides	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	Ultrasonics	en_US
dc.title	Enhanced methane production from waste activated sludge by combining calcium peroxide with ultrasonic: Performance, mechanism, and implication	en_US
dc.type	Journal Article
utslib.citation.volume	279	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	279	en_US

Abstract:

© 2019 Elsevier Ltd This study reported a novel and high-efficient pretreatment method for anaerobic digestion, i.e., combining calcium peroxide (CaO2) with ultrasonic (US), by which not only the methane production was remarkably improved but also the removal of refractory organic contaminants was enhanced. Experimental results showed the optimum condition for methane production was achieved at 0.1 g CaO2/g VSS combined with US (1 W/ml, 10 min). Under this condition, the maximal methane yield of 211.90 ± 2.6 L CH4/kg VSS was obtained after 36 d of anaerobic digestion, which was respectively 1.36-fold, 1.19-fold and 1.26-fold of that from the control, solo US (1 W/ml, 10 min) and solo CaO2 (0.1 g/g VSS). Mechanism investigations revealed that CaO2 + US not only improved the disintegration of waste activated sludge (WAS) but also increased the proportion of biodegradable organic matters. Moreover, the total frequency of recalcitrant contaminants contained in WAS decreased significantly when CaO2 + US was applied.

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http://hdl.handle.net/10453/131840