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Comparative evaluation of the performance of a capacitive and a non-capacitive microbial fuel cell

Title data

Simeon, Meshack Imologie ; Imoize, Agbotiname Lucky ; Freitag, Ruth:
Comparative evaluation of the performance of a capacitive and a non-capacitive microbial fuel cell.
In: IEEE (ed.): 18th International Multi-Conference on Systems, Signals & Devices (SSD 2021). - Piscataway, NJ : IEEE , 2021 . - pp. 1076-1082
ISBN 978-1-6654-1493-7
DOI: https://doi.org/10.1109/SSD52085.2021.9429481

Project information

Project financing: Deutscher Akademischer Austauschdienst
Petroleum Technology Development Fund

Abstract in another language

Electrode materials play a critical role in the performance of microbial fuel cells. This study investigates the contribution of capacitive bio-electrodes to sustainable power production in a single-chamber microbial fuel cell (MFC). The capacitive electrodes consisted of a stainless-steel wire mesh with an activated carbon layer, while the non-capacitive control electrodes were made of graphite felt with a wound current collector. The MFCs were constructed using a glass vessel with the anode completely buried in biologically active soil and the cathode placed above the soil to form a single chamber configuration. The performance of the MFCs was investigated using linear sweep voltammetry (LSV) and electrochemical impedance spectroscopy (EIS). The results showed that the performance of the capacitive MFC was three times better than that of the non-capacitive MFC. While there was no significant difference in the Ohmic resistances of the MFCs, there was a significant difference in charge transfer resistance and capacitance of the MFCs. The capacitive MFC had a double layer capacitance of 8.282 µF in addition to the diffuse layer capacitance at the layer/metal interface of 2.012 F, while the non-capacitive MFC had a double layer capacitance of 5.034 µF with no diffuse layer capacitance. The results show that the capacitive characteristics of both cathode and anode improve the performance of a single-chamber MFC.

Further data

Item Type: Article in a book
Refereed: Yes
Keywords: capacitive MFC; electrodes; power; resistance; microbial fuel cell
Institutions of the University: Faculties > Faculty of Engineering Science > Chair Process Biotechnology > Chair Process Biotechnology - Univ.-Prof. Dr. Ruth Freitag
Profile Fields > Emerging Fields > Energy Research and Energy Technology
Result of work at the UBT: Yes
DDC Subjects: 500 Science > 500 Natural sciences
600 Technology, medicine, applied sciences > 600 Technology
600 Technology, medicine, applied sciences > 620 Engineering
Date Deposited: 16 Aug 2022 06:37
Last Modified: 16 Aug 2022 06:37
URI: https://eref.uni-bayreuth.de/id/eprint/71463