Effects of sulphate addition and sulphide inhibition on microbial fuel cells
Effects of sulphate addition and sulphide inhibition on microbial fuel cells
The effects of adding sulphate in: (i) standard activated sludge microbial fuel cells (MFCs) and (ii) larger-scale leachate-treating columns – both as individual units and as a system connected in cascade – are reported. S-replete power output was ∼2-fold higher than that of the S-deplete MFC. Furthermore, the effects of evolved sulphide (S2−) inhibition were investigated. The overall decrease in power output from the sulphide inhibitor (Na2MoO4) additions was 83% for the S-replete and 90% for the S-deplete. The second phase with the leachate treating units shows an improvement of 32–86% (depended on leachate strength) in current output as a result of adding sulphate. When leachate column MFCs were connected fluidically in series, the amount of Na2SO4 made available downstream was decreasing (increase in power was 99%, 40% and 12% for columns in cascade). Results demonstrated the beneficial effects of added sulphur sources to both activated sludge and leachate-treating MFCs.
Microbial fuel cells, Sulphate, Activated sludge, Landfill leachate, Sodium molybdate
32-37
Ieropoulos, I.
6c580270-3e08-430a-9f49-7fbe869daf13
Galvez, A.
7b094220-bf46-4143-9009-ef08d966f8b5
Greenman, J.
eb3d9b82-7cac-4442-9301-f34884ae4a16
10 January 2013
Ieropoulos, I.
6c580270-3e08-430a-9f49-7fbe869daf13
Galvez, A.
7b094220-bf46-4143-9009-ef08d966f8b5
Greenman, J.
eb3d9b82-7cac-4442-9301-f34884ae4a16
Ieropoulos, I., Galvez, A. and Greenman, J.
(2013)
Effects of sulphate addition and sulphide inhibition on microbial fuel cells.
Enzyme and Microbial Technology, 52 (1), .
(doi:10.1016/j.enzmictec.2012.10.002).
Abstract
The effects of adding sulphate in: (i) standard activated sludge microbial fuel cells (MFCs) and (ii) larger-scale leachate-treating columns – both as individual units and as a system connected in cascade – are reported. S-replete power output was ∼2-fold higher than that of the S-deplete MFC. Furthermore, the effects of evolved sulphide (S2−) inhibition were investigated. The overall decrease in power output from the sulphide inhibitor (Na2MoO4) additions was 83% for the S-replete and 90% for the S-deplete. The second phase with the leachate treating units shows an improvement of 32–86% (depended on leachate strength) in current output as a result of adding sulphate. When leachate column MFCs were connected fluidically in series, the amount of Na2SO4 made available downstream was decreasing (increase in power was 99%, 40% and 12% for columns in cascade). Results demonstrated the beneficial effects of added sulphur sources to both activated sludge and leachate-treating MFCs.
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Accepted/In Press date: 4 October 2012
e-pub ahead of print date: 13 October 2012
Published date: 10 January 2013
Keywords:
Microbial fuel cells, Sulphate, Activated sludge, Landfill leachate, Sodium molybdate
Identifiers
Local EPrints ID: 454815
URI: http://eprints.soton.ac.uk/id/eprint/454815
ISSN: 0141-0229
PURE UUID: d26395f0-ea9a-4a91-b493-2cd72baf59c6
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Date deposited: 24 Feb 2022 21:50
Last modified: 17 Mar 2024 04:10
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Author:
A. Galvez
Author:
J. Greenman
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