Scalability of self-stratifying microbial fuel cell: Towards height miniaturisation
Scalability of self-stratifying microbial fuel cell: Towards height miniaturisation
The scalability of bioelectrochemical systems is a key parameter for their practical implementation in the real-world. Up until now, only urine-fed self-stratifying microbial fuel cells (SSM-MFCs) have been shown to be scalable in width and length with limited power density losses. For practical reasons, the present work focuses on the scalability of SSM-MFCs in the one dimension that has not yet been investigated, namely height. Three different height conditions were considered (1 cm, 2 cm and 3 cm tall electrodes). The normalised power density of the 2 cm and 3 cm conditions were similar either during the durability test under a hydraulic retention time of ≈39 h (i.e. 15.74 ± 0.99 μW.cm−3) and during the polarisation experiments (i.e. 27.79 ± 0.92 μW.cm−3). Conversely, the 1 cm condition had lower power densities of 11.23 ± 0.07 μW.cm−3 and 17.73 ± 3.94 μW.cm−3 both during the durability test and the polarisation experiment, respectively. These results confirm that SSM-MFCs can be scaled in all 3 dimensions with minimal power density losses, with a minimum height threshold for the electrode comprised between 1 cm and 2 cm.
Microbial fuel cell, Urine treatment, Scaling, Self-stratification, Power generation
68-75
Walter, Xavier Alexis
67c83b61-76af-4e37-aec8-79ebc723b807
Santoro, Carlo
03549f6d-d57f-4d79-8bae-2d9271aa7371
Greenman, John
eb3d9b82-7cac-4442-9301-f34884ae4a16
Ieropoulos, Ioannis A.
6c580270-3e08-430a-9f49-7fbe869daf13
June 2019
Walter, Xavier Alexis
67c83b61-76af-4e37-aec8-79ebc723b807
Santoro, Carlo
03549f6d-d57f-4d79-8bae-2d9271aa7371
Greenman, John
eb3d9b82-7cac-4442-9301-f34884ae4a16
Ieropoulos, Ioannis A.
6c580270-3e08-430a-9f49-7fbe869daf13
Walter, Xavier Alexis, Santoro, Carlo, Greenman, John and Ieropoulos, Ioannis A.
(2019)
Scalability of self-stratifying microbial fuel cell: Towards height miniaturisation.
Bioelectrochemistry, 127, .
(doi:10.1016/j.bioelechem.2019.01.004).
Abstract
The scalability of bioelectrochemical systems is a key parameter for their practical implementation in the real-world. Up until now, only urine-fed self-stratifying microbial fuel cells (SSM-MFCs) have been shown to be scalable in width and length with limited power density losses. For practical reasons, the present work focuses on the scalability of SSM-MFCs in the one dimension that has not yet been investigated, namely height. Three different height conditions were considered (1 cm, 2 cm and 3 cm tall electrodes). The normalised power density of the 2 cm and 3 cm conditions were similar either during the durability test under a hydraulic retention time of ≈39 h (i.e. 15.74 ± 0.99 μW.cm−3) and during the polarisation experiments (i.e. 27.79 ± 0.92 μW.cm−3). Conversely, the 1 cm condition had lower power densities of 11.23 ± 0.07 μW.cm−3 and 17.73 ± 3.94 μW.cm−3 both during the durability test and the polarisation experiment, respectively. These results confirm that SSM-MFCs can be scaled in all 3 dimensions with minimal power density losses, with a minimum height threshold for the electrode comprised between 1 cm and 2 cm.
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Published date: June 2019
Keywords:
Microbial fuel cell, Urine treatment, Scaling, Self-stratification, Power generation
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Local EPrints ID: 456225
URI: http://eprints.soton.ac.uk/id/eprint/456225
ISSN: 1567-5394
PURE UUID: 0c362357-03ad-4c8b-8fc8-23ded91ae51f
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Date deposited: 26 Apr 2022 19:07
Last modified: 17 Mar 2024 04:10
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Author:
Xavier Alexis Walter
Author:
Carlo Santoro
Author:
John Greenman
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