Electricity and biomass production in a bacteria-Chlorella based microbial fuel cell treating wastewater

Commault, AS; Laczka, O; Siboni, N; Tamburic, B; Crosswell, JR; Seymour, JR; Ralph, PJ

Electricity and biomass production in a bacteria-Chlorella based microbial fuel cell treating wastewater

Commault, AS

Laczka, O

Siboni, N

Tamburic, B

Crosswell, JR

Seymour, JR

Ralph, PJ

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Publication Type:: Journal Article
Citation:: Journal of Power Sources, 2017, 356 pp. 299 - 309
Issue Date:: 2017-01-01

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Field	Value	Language
dc.contributor.author	Commault, AS https://orcid.org/0000-0002-6730-0089	en_US
dc.contributor.author	Laczka, O https://orcid.org/0000-0003-0966-9897	en_US
dc.contributor.author	Siboni, N https://orcid.org/0000-0001-6082-0949	en_US
dc.contributor.author	Tamburic, B https://orcid.org/0000-0001-5720-9380	en_US
dc.contributor.author	Crosswell, JR https://orcid.org/0000-0001-5568-5391	en_US
dc.contributor.author	Seymour, JR https://orcid.org/0000-0002-3745-6541	en_US
dc.contributor.author	Ralph, PJ https://orcid.org/0000-0002-3103-7346	en_US
dc.date.issued	2017-01-01	en_US
dc.identifier.citation	Journal of Power Sources, 2017, 356 pp. 299 - 309	en_US
dc.identifier.issn	0378-7753	en_US
dc.identifier.uri	http://hdl.handle.net/10453/115268
dc.description.abstract	© 2017 Elsevier B.V. The chlorophyte microalga Chlorella vulgaris has been exploited within bioindustrial settings to treat wastewater and produce oxygen at the cathode of microbial fuel cells (MFCs), thereby accumulating algal biomass and producing electricity. We aimed to couple these capacities by growing C. vulgaris at the cathode of MFCs in wastewater previously treated by anodic bacteria. The bioelectrochemical performance of the MFCs was investigated with different catholytes including phosphate buffer and anode effluent, either in the presence or absence of C. vulgaris. The power output fluctuated diurnally in the presence of the alga. The maximum power when C. vulgaris was present reached 34.2 ± 10.0 mW m−2, double that observed without the alga (15.6 ± 9.7 mW m−2), with a relaxation of 0.19 gL−1 d−1 chemical oxygen demand and 5 mg L−1 d−1 ammonium also removed. The microbial community associated with the algal biofilm included nitrogen-fixing (Rhizobiaceae), denitrifying (Pseudomonas stutzeri and Thauera sp., from Pseudomonadales and Rhodocyclales orders, respectively), and nitrate-reducing bacteria (Rheinheimera sp. from the Alteromonadales), all of which likely contributed to nitrogen cycling processes at the cathode. This paper highlights the importance of coupling microbial community screening to electrochemical and chemical analyses to better understand the processes involved in photo-cathode MFCs.	en_US
dc.relation.ispartof	Journal of Power Sources	en_US
dc.relation.isbasedon	10.1016/j.jpowsour.2017.03.097	en_US
dc.subject.classification	Energy	en_US
dc.title	Electricity and biomass production in a bacteria-Chlorella based microbial fuel cell treating wastewater	en_US
dc.type	Journal Article
utslib.citation.volume	356	en_US
utslib.for	03 Chemical Sciences	en_US
utslib.for	09 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 Science
pubs.organisational-group	/University of Technology Sydney/Strength - C3 - Climate Change Cluster
utslib.copyright.status	closed_access
pubs.publication-status	Published	en_US
pubs.volume	356	en_US

Abstract:

© 2017 Elsevier B.V. The chlorophyte microalga Chlorella vulgaris has been exploited within bioindustrial settings to treat wastewater and produce oxygen at the cathode of microbial fuel cells (MFCs), thereby accumulating algal biomass and producing electricity. We aimed to couple these capacities by growing C. vulgaris at the cathode of MFCs in wastewater previously treated by anodic bacteria. The bioelectrochemical performance of the MFCs was investigated with different catholytes including phosphate buffer and anode effluent, either in the presence or absence of C. vulgaris. The power output fluctuated diurnally in the presence of the alga. The maximum power when C. vulgaris was present reached 34.2 ± 10.0 mW m−2, double that observed without the alga (15.6 ± 9.7 mW m−2), with a relaxation of 0.19 gL−1 d−1 chemical oxygen demand and 5 mg L−1 d−1 ammonium also removed. The microbial community associated with the algal biofilm included nitrogen-fixing (Rhizobiaceae), denitrifying (Pseudomonas stutzeri and Thauera sp., from Pseudomonadales and Rhodocyclales orders, respectively), and nitrate-reducing bacteria (Rheinheimera sp. from the Alteromonadales), all of which likely contributed to nitrogen cycling processes at the cathode. This paper highlights the importance of coupling microbial community screening to electrochemical and chemical analyses to better understand the processes involved in photo-cathode MFCs.

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http://hdl.handle.net/10453/115268