Exploring the feasibility of nitrous oxide reduction and polyhydroxyalkanoates production simultaneously by mixed microbial cultures.

Fang, F; Xu, R-Z; Huang, Y-Q; Luo, J-Y; Xie, W-M; Ni, B-J; Cao, J-S

Exploring the feasibility of nitrous oxide reduction and polyhydroxyalkanoates production simultaneously by mixed microbial cultures.

Fang, F Xu, R-Z Huang, Y-Q Luo, J-Y Xie, W-M Ni, B-J Cao, J-S

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Publisher:: ELSEVIER SCI LTD
Publication Type:: Journal Article
Citation:: Bioresour Technol, 2021, 342, pp. 126012
Issue Date:: 2021-12

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Field	Value	Language
dc.contributor.author	Fang, F
dc.contributor.author	Xu, R-Z
dc.contributor.author	Huang, Y-Q
dc.contributor.author	Luo, J-Y
dc.contributor.author	Xie, W-M
dc.contributor.author	Ni, B-J
dc.contributor.author	Cao, J-S
dc.date.accessioned	2022-04-24T21:13:19Z
dc.date.available	2021-09-20
dc.date.available	2022-04-24T21:13:19Z
dc.date.issued	2021-12
dc.identifier.citation	Bioresour Technol, 2021, 342, pp. 126012
dc.identifier.issn	0960-8524
dc.identifier.issn	1873-2976
dc.identifier.uri	http://hdl.handle.net/10453/156571
dc.description.abstract	Nitrous oxide (N2O), as a powerful greenhouse gas, has drawn increasing attention in recent years and different strategies for N2O reduction were explored. In this study, a novel strategy for valuable polyhydroxyalkanoates (PHA) production coupling with N2O reduction by mixed microbial cultures (MMC) using different substrates was evaluated. Results revealed that N2O was an effective electron acceptor for PHA production. The highest PHA yield (0.35 Cmmol PHA/Cmmol S) and PHA synthesis rate (227.47 mg PHA/L/h) were obtained with acetic acid as substrate. Low temperature (15℃) and pH of 8.0 were beneficial for PHA accumulation. Results of the thermogravimetric analysis showed that PHA produced with N2O as electron acceptor has better thermal stability (melting temperature of 99.4℃ and loss 5% weight temperature of 211.4℃). Our work opens up new avenues for simultaneously N2O reduction and valuable bioplastic production, which is conducive to resource recovery and climate protection.
dc.format	Print-Electronic
dc.language	eng
dc.publisher	ELSEVIER SCI LTD
dc.relation.ispartof	Bioresour Technol
dc.relation.isbasedon	10.1016/j.biortech.2021.126012
dc.rights	info:eu-repo/semantics/closedAccess
dc.subject.classification	Biotechnology
dc.subject.mesh	Acetic Acid
dc.subject.mesh	Bioreactors
dc.subject.mesh	Feasibility Studies
dc.subject.mesh	Nitrous Oxide
dc.subject.mesh	Polyhydroxyalkanoates
dc.subject.mesh	Nitrous Oxide
dc.subject.mesh	Acetic Acid
dc.subject.mesh	Feasibility Studies
dc.subject.mesh	Bioreactors
dc.subject.mesh	Polyhydroxyalkanoates
dc.title	Exploring the feasibility of nitrous oxide reduction and polyhydroxyalkanoates production simultaneously by mixed microbial cultures.
dc.type	Journal Article
utslib.citation.volume	342
utslib.location.activity	England
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	*
dc.date.updated	2022-04-24T21:13:14Z
pubs.publication-status	Published
pubs.volume	342

Abstract:

Nitrous oxide (N2O), as a powerful greenhouse gas, has drawn increasing attention in recent years and different strategies for N2O reduction were explored. In this study, a novel strategy for valuable polyhydroxyalkanoates (PHA) production coupling with N2O reduction by mixed microbial cultures (MMC) using different substrates was evaluated. Results revealed that N2O was an effective electron acceptor for PHA production. The highest PHA yield (0.35 Cmmol PHA/Cmmol S) and PHA synthesis rate (227.47 mg PHA/L/h) were obtained with acetic acid as substrate. Low temperature (15℃) and pH of 8.0 were beneficial for PHA accumulation. Results of the thermogravimetric analysis showed that PHA produced with N2O as electron acceptor has better thermal stability (melting temperature of 99.4℃ and loss 5% weight temperature of 211.4℃). Our work opens up new avenues for simultaneously N2O reduction and valuable bioplastic production, which is conducive to resource recovery and climate protection.

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http://hdl.handle.net/10453/156571