Bioanode as a limiting factor to biocathode performance in microbial electrolysis cells
Bioanode as a limiting factor to biocathode performance in microbial electrolysis cells
The bioanode is important for a microbial electrolysis cell (MEC) and its robustness to maintain its catalytic activity affects the performance of the whole system. Bioanodes enriched at a potential of +0.2 V (vs. standard hydrogen electrode) were able to sustain their oxidation activity when the anode potential was varied from −0.3 up to +1.0 V. Chronoamperometric test revealed that the bioanode produced peak current density of 0.36 A/m2 and 0.37 A/m2 at applied potential 0 and +0.6 V, respectively. Meanwhile hydrogen production at the biocathode was proportional to the applied potential, in the range from −0.5 to −1.0 V. The highest production rate was 7.4 L H2/(m2 cathode area)/day at −1.0 V cathode potential. A limited current output at the bioanode could halt the biocathode capability to generate hydrogen. Therefore maximum applied potential that can be applied to the biocathode was calculated as −0.84 V without overloading the bioanode.
Applied potential, Bioanode, Biocathode, Biological microbial electrolysis cell, Limiting factor
313-324
Lim, Swee Su
b2f36c85-e9ce-44da-8a8a-0a4d84fa61d4
Yu, Eileen Hao
28e47863-4b50-4821-b80b-71fb5a2edef2
Daud, Wan Ramli Wan
54644867-114d-4e20-983a-a488a28e8b17
Kim, Byung Hong
a59d6047-8293-41f5-9cb6-0371ca76092a
Scott, Keith
38909157-296d-4fe7-a245-1b98e1fee913
24 March 2017
Lim, Swee Su
b2f36c85-e9ce-44da-8a8a-0a4d84fa61d4
Yu, Eileen Hao
28e47863-4b50-4821-b80b-71fb5a2edef2
Daud, Wan Ramli Wan
54644867-114d-4e20-983a-a488a28e8b17
Kim, Byung Hong
a59d6047-8293-41f5-9cb6-0371ca76092a
Scott, Keith
38909157-296d-4fe7-a245-1b98e1fee913
Lim, Swee Su, Yu, Eileen Hao, Daud, Wan Ramli Wan, Kim, Byung Hong and Scott, Keith
(2017)
Bioanode as a limiting factor to biocathode performance in microbial electrolysis cells.
Bioresource Technology, 238, .
(doi:10.1016/j.biortech.2017.03.127).
Abstract
The bioanode is important for a microbial electrolysis cell (MEC) and its robustness to maintain its catalytic activity affects the performance of the whole system. Bioanodes enriched at a potential of +0.2 V (vs. standard hydrogen electrode) were able to sustain their oxidation activity when the anode potential was varied from −0.3 up to +1.0 V. Chronoamperometric test revealed that the bioanode produced peak current density of 0.36 A/m2 and 0.37 A/m2 at applied potential 0 and +0.6 V, respectively. Meanwhile hydrogen production at the biocathode was proportional to the applied potential, in the range from −0.5 to −1.0 V. The highest production rate was 7.4 L H2/(m2 cathode area)/day at −1.0 V cathode potential. A limited current output at the bioanode could halt the biocathode capability to generate hydrogen. Therefore maximum applied potential that can be applied to the biocathode was calculated as −0.84 V without overloading the bioanode.
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Published date: 24 March 2017
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© 2017 The Authors
Keywords:
Applied potential, Bioanode, Biocathode, Biological microbial electrolysis cell, Limiting factor
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Local EPrints ID: 498558
URI: http://eprints.soton.ac.uk/id/eprint/498558
ISSN: 0960-8524
PURE UUID: be437378-99bb-4301-aa73-1601c5be4d08
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Date deposited: 20 Feb 2025 18:21
Last modified: 22 Feb 2025 03:13
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Author:
Swee Su Lim
Author:
Eileen Hao Yu
Author:
Wan Ramli Wan Daud
Author:
Byung Hong Kim
Author:
Keith Scott
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