Relationship between the synergistic/antagonistic effect of anaerobic co-digestion and organic loading

Xie, T; Xie, S; Sivakumar, M; Nghiem, LD

Relationship between the synergistic/antagonistic effect of anaerobic co-digestion and organic loading

Xie, T Xie, S Sivakumar, M Nghiem, LD

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Publication Type:: Journal Article
Citation:: International Biodeterioration and Biodegradation, 2017, 124 pp. 155 - 161
Issue Date:: 2017-10-01

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Field	Value	Language
dc.contributor.author	Xie, T	en_US
dc.contributor.author	Xie, S	en_US
dc.contributor.author	Sivakumar, M	en_US
dc.contributor.author	Nghiem, LD https://orcid.org/0000-0002-9039-5792	en_US
dc.date.available	2020-05-25T19:01:22Z
dc.date.issued	2017-10-01	en_US
dc.identifier.citation	International Biodeterioration and Biodegradation, 2017, 124 pp. 155 - 161	en_US
dc.identifier.issn	0964-8305	en_US
dc.identifier.uri	http://hdl.handle.net/10453/125036
dc.description.abstract	© 2017 Results from this study reveal a notable relationship between the synergistic/antagonistic performance of sewage sludge – food waste anaerobic co-digestion (AcoD) and organic loading. At the same sewage sludge content, biomethane potential assays show an increasing specific methane yield as the content of food waste increased to the optimum organic loading of 15 kg VS/m3. Under these conditions, the specific methane yields experimentally measured in this study were considerably higher than those calculated by adding the specific methane individual co-substrates during mono-digestion. On the other hand, at above the optimum organic loading value, the antagonistic effect (i.e. lower specific methane yield compared to mono-digestion) was observed. The relationship between synergistic performance of AcoD and organic loading was also evidenced in the removal of volatile solids as well as chemical oxygen demand. Further analysis of the intermediate products show that methanogenesis was the rate limiting step during AcoD at a high organic loading value. As the organic loading increased, the digestion lag phase increased and the hydrolysis rate decreased.	en_US
dc.relation	http://purl.org/au-research/grants/arc/LP150100304
dc.relation.ispartof	International Biodeterioration and Biodegradation	en_US
dc.relation.isbasedon	10.1016/j.ibiod.2017.03.025	en_US
dc.subject.classification	Biotechnology	en_US
dc.title	Relationship between the synergistic/antagonistic effect of anaerobic co-digestion and organic loading	en_US
dc.type	Journal Article
utslib.citation.volume	124	en_US
utslib.for	0601 Biochemistry and Cell Biology	en_US
utslib.for	05 Environmental Sciences	en_US
utslib.for	06 Biological Sciences	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	open_access
pubs.publication-status	Published	en_US
pubs.volume	124	en_US

Abstract:

© 2017 Results from this study reveal a notable relationship between the synergistic/antagonistic performance of sewage sludge – food waste anaerobic co-digestion (AcoD) and organic loading. At the same sewage sludge content, biomethane potential assays show an increasing specific methane yield as the content of food waste increased to the optimum organic loading of 15 kg VS/m3. Under these conditions, the specific methane yields experimentally measured in this study were considerably higher than those calculated by adding the specific methane individual co-substrates during mono-digestion. On the other hand, at above the optimum organic loading value, the antagonistic effect (i.e. lower specific methane yield compared to mono-digestion) was observed. The relationship between synergistic performance of AcoD and organic loading was also evidenced in the removal of volatile solids as well as chemical oxygen demand. Further analysis of the intermediate products show that methanogenesis was the rate limiting step during AcoD at a high organic loading value. As the organic loading increased, the digestion lag phase increased and the hydrolysis rate decreased.

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http://hdl.handle.net/10453/125036