ID | 116722 |
Author |
Kikuchi, Mayu
Kyoto University
Sowa, Keisei
Kyoto University
Nakagawa, Kasumi
Tokushima University
Matsunaga, Momoka
Tokushima University
Ando, Akinori
Kyoto University
Kano, Kenji
Kyoto University
Takeuchi, Michiki
Kyoto University
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Keywords | indigo
indigo fermentation
microbial fuel cell
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Content Type |
Journal Article
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Description | Aizome (Japanese indigo dyeing) is a unique dyeing method using microbial activity under anaerobic alkaline conditions. In indigo-dye fermenting suspensions; microorganisms reduce indigo into leuco-indigo with acetaldehyde as a reductant. In this study; we constructed a semi-microbial biofuel cell using an indigo-dye fermenting suspension. Carbon fiber and Pt mesh were used as the anode and cathode materials, respectively. The open-circuit voltage (OCV) was 0.6 V, and the maximum output power was 32 µW cm−2 (320 mW m−2). In addition, the continuous stability was evaluated under given conditions starting with the highest power density; the power density rapidly decreased in 0.5 h due to the degradation of the anode. Conversely, at the OCV, the anode potential exhibited high stability for two days. However, the OCV decreased by approximately 80 mV after 2 d compared with the initial value, which was attributed to the performance degradation of the gas-diffusion-cathode system caused by the evaporation of the dispersion solution. This is the first study to construct a semi-microbial biofuel cell using an indigo-dye fermenting suspension.
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Journal Title |
Catalysts
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ISSN | 20734344
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Publisher | MDPI
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Volume | 11
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Issue | 9
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Start Page | 1080
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Published Date | 2021-09-08
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Rights | This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
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language |
eng
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Publisher
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departments |
Bioscience and Bioindustry
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