Effect of carbon sources on the aggregation of photo fermentative bacteria induced by L-cysteine for enhancing hydrogen production.

Xie, G-J; Liu, B-F; Ding, J; Wang, Q; Ma, C; Zhou, X; Ren, N-Q

Effect of carbon sources on the aggregation of photo fermentative bacteria induced by L-cysteine for enhancing hydrogen production.

Xie, G-J Liu, B-F Ding, J Wang, Q

Ma, C Zhou, X Ren, N-Q

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Publisher:: SPRINGER HEIDELBERG
Publication Type:: Journal Article
Citation:: Environ Sci Pollut Res Int, 2016, 23, (24), pp. 25312-25322
Issue Date:: 2016-12

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Field	Value	Language
dc.contributor.author	Xie, G-J
dc.contributor.author	Liu, B-F
dc.contributor.author	Ding, J
dc.contributor.author	Wang, Q https://orcid.org/0000-0002-5744-2331
dc.contributor.author	Ma, C
dc.contributor.author	Zhou, X
dc.contributor.author	Ren, N-Q
dc.date.accessioned	2022-08-02T21:41:31Z
dc.date.available	2016-09-20
dc.date.available	2022-08-02T21:41:31Z
dc.date.issued	2016-12
dc.identifier.citation	Environ Sci Pollut Res Int, 2016, 23, (24), pp. 25312-25322
dc.identifier.issn	0944-1344
dc.identifier.issn	1614-7499
dc.identifier.uri	http://hdl.handle.net/10453/159509
dc.description.abstract	Poor flocculation of photo fermentative bacteria resulting in continuous biomass washout from photobioreactor is a critical challenge to achieve rapid and stable hydrogen production. In this work, the aggregation of Rhodopseudomonas faecalis RLD-53 was successfully developed in a photobioreactor and the effects of different carbon sources on hydrogen production and aggregation ability were investigated. Extracellular polymeric substances (EPS) production by R. faecalis RLD-53 cultivated using different carbon sources were stimulated by addition of L-cysteine. The absolute ζ potentials of R. faecalis RLD-53 were considerably decreased with addition of L-cysteine, and aggregation barriers based on DLVO dropped to 15-43 % of that in control groups. Thus, R. faecalis RLD-53 flocculated effectively, and aggregation abilities of strain RLD-53 cultivated with acetate, propionate, lactate and malate reached 29.35, 32.34, 26.07 and 24.86 %, respectively. In the continuous test, hydrogen-producing activity was also promoted and reached 2.45 mol H2/mol lactate, 3.87 mol H2/mol propionate and 5.10 mol H2/mol malate, respectively. Therefore, the aggregation of R. faecalis RLD-53 induced by L-cysteine is independent on the substrate types, which ensures the wide application of this technology to enhance hydrogen recovery from wastewater dominated by different organic substrates.
dc.format	Print-Electronic
dc.language	eng
dc.publisher	SPRINGER HEIDELBERG
dc.relation.ispartof	Environ Sci Pollut Res Int
dc.relation.isbasedon	10.1007/s11356-016-7756-0
dc.rights	info:eu-repo/semantics/closedAccess
dc.subject	03 Chemical Sciences, 05 Environmental Sciences, 06 Biological Sciences
dc.subject.classification	Environmental Sciences
dc.subject.mesh	Acetates
dc.subject.mesh	Biomass
dc.subject.mesh	Carbon
dc.subject.mesh	Cysteine
dc.subject.mesh	Fermentation
dc.subject.mesh	Flocculation
dc.subject.mesh	Hydrogen
dc.subject.mesh	Photobioreactors
dc.subject.mesh	Rhodopseudomonas
dc.subject.mesh	Rhodopseudomonas
dc.subject.mesh	Carbon
dc.subject.mesh	Hydrogen
dc.subject.mesh	Acetates
dc.subject.mesh	Cysteine
dc.subject.mesh	Biomass
dc.subject.mesh	Fermentation
dc.subject.mesh	Flocculation
dc.subject.mesh	Photobioreactors
dc.title	Effect of carbon sources on the aggregation of photo fermentative bacteria induced by L-cysteine for enhancing hydrogen production.
dc.type	Journal Article
utslib.citation.volume	23
utslib.location.activity	Germany
utslib.for	03 Chemical Sciences
utslib.for	05 Environmental Sciences
utslib.for	06 Biological Sciences
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	2022-08-02T21:41:30Z
pubs.issue	24
pubs.publication-status	Published
pubs.volume	23
utslib.citation.issue	24

Abstract:

Poor flocculation of photo fermentative bacteria resulting in continuous biomass washout from photobioreactor is a critical challenge to achieve rapid and stable hydrogen production. In this work, the aggregation of Rhodopseudomonas faecalis RLD-53 was successfully developed in a photobioreactor and the effects of different carbon sources on hydrogen production and aggregation ability were investigated. Extracellular polymeric substances (EPS) production by R. faecalis RLD-53 cultivated using different carbon sources were stimulated by addition of L-cysteine. The absolute ζ potentials of R. faecalis RLD-53 were considerably decreased with addition of L-cysteine, and aggregation barriers based on DLVO dropped to 15-43 % of that in control groups. Thus, R. faecalis RLD-53 flocculated effectively, and aggregation abilities of strain RLD-53 cultivated with acetate, propionate, lactate and malate reached 29.35, 32.34, 26.07 and 24.86 %, respectively. In the continuous test, hydrogen-producing activity was also promoted and reached 2.45 mol H2/mol lactate, 3.87 mol H2/mol propionate and 5.10 mol H2/mol malate, respectively. Therefore, the aggregation of R. faecalis RLD-53 induced by L-cysteine is independent on the substrate types, which ensures the wide application of this technology to enhance hydrogen recovery from wastewater dominated by different organic substrates.

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http://hdl.handle.net/10453/159509