Two-dimensional mathematical model of an air-cathode microbial fuel cell with graphite fiber brush anode
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Gadkari, Siddharth, Gu, Sai and Sadhukhan, Jhuma (2019) Two-dimensional mathematical model of an air-cathode microbial fuel cell with graphite fiber brush anode Journal of Power Sources, 441, 227145.
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Two-dimensional mathematical model of an air-cathode microbial fuel cell with graphite fiber brush anode.pdf - Accepted version Manuscript Download (6MB) | Preview |
Official URL: http://dx.doi.org/10.1016/j.jpowsour.2019.227145
Abstract
A two-dimensional mathematical model has been developed for characterizing and predicting the dynamic performance of an air-cathode MFC with graphite fiber brush used as anode. The charge transfer kinetics are coupled to the mass balance at both electrodes considering the brush anode as a porous matrix. The model has been used to study the effect of design (electrode spacing and anode size) as well as operational (substrate concentration) parameters on the MFC performance. Two-dimensional dynamic simulation allows visual representation of the local overpotential, current density and reaction rates in the brush anode and helps in understanding how these factors impact the overall MFC performance. The numerical results show that while decreasing electrode spacing and increasing initial substrate concentration both have a positive influence on power density of the MFC, reducing anode size does not affect MFC performance till almost 60 brush material has been removed. The proposed mathematical model can help guide experimental/pilot/industrial scale protocols for optimal performance.
| Item Type: | Article | ||||||||||||
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| Divisions : | Faculty of Engineering and Physical Sciences > Chemical and Process Engineering | ||||||||||||
| Authors : |
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| Date : | November 2019 | ||||||||||||
| Funders : | Natural Environment Research Council (NERC) | ||||||||||||
| DOI : | 10.1016/j.jpowsour.2019.227145 | ||||||||||||
| Copyright Disclaimer : | © 2019. This manuscript version is made available under the CC-BY-NC-ND 4.0 license http://creativecommons.org/licenses/by-nc-nd/4.0/ | ||||||||||||
| Uncontrolled Keywords : | Microbial fuel cell; Brush anode; Mathematical analysis; Dynamic model; Graphite fibers; Bioelectrochemical system | ||||||||||||
| Depositing User : | Clive Harris | ||||||||||||
| Date Deposited : | 26 Sep 2019 13:42 | ||||||||||||
| Last Modified : | 20 Sep 2020 02:08 | ||||||||||||
| URI: | http://epubs.surrey.ac.uk/id/eprint/852815 |
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