Next Article in Journal
Promotion Effect of Palladium on BiVO4 Sensing Material for Epinephrine Detection
Next Article in Special Issue
Evaluation of Goethite as a Catalyst for the Thermal Stage of the Westinghouse Process for Hydrogen Production
Previous Article in Journal
Sustainable Exploitation of Residual Cynara cardunculus L. to Levulinic Acid and n-Butyl Levulinate
Previous Article in Special Issue
A Brief Review of Catalytic Cathode Materials for Na-CO2 Batteries
 
 
Article

Indigo-Mediated Semi-Microbial Biofuel Cell Using an Indigo-Dye Fermenting Suspension

1
Division of Applied Life Sciences, Graduate School of Agriculture, Kyoto University, Kitashirakawa Oiwake-cho, Sakyo-ku, Kyoto 606-8502, Japan
2
Graduate School of Advanced Technology and Science, Tokushima University, 2-1 Minamijosanjima-cho, Tokushima 770-8513, Japan
3
Center for Advanced Science and Innovation, Kyoto University, Gokasho, Uji, Kyoto 611-0011, Japan
4
Industrial Microbiology, Graduate School of Agriculture, Kyoto University, Kitashirakawa Oiwake-cho, Sakyo-ku, Kyoto 606-8502, Japan
5
Graduate School of Technology, Industrial and Social Sciences, Tokushima University, 2-1 Minamijosanjima-cho, Tokushima 770-8513, Japan
*
Authors to whom correspondence should be addressed.
These authors contributed equally as first authors.
Academic Editors: Vincenzo Baglio, Carlo Santoro, David Sebastián, Minhua Shao and Yingze Song
Catalysts 2021, 11(9), 1080; https://doi.org/10.3390/catal11091080
Received: 16 July 2021 / Revised: 5 September 2021 / Accepted: 6 September 2021 / Published: 8 September 2021
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. View Full-Text
Keywords: indigo; indigo fermentation; microbial fuel cell indigo; indigo fermentation; microbial fuel cell
Show Figures

Graphical abstract

MDPI and ACS Style

Kikuchi, M.; Sowa, K.; Nakagawa, K.; Matsunaga, M.; Ando, A.; Kano, K.; Takeuchi, M.; Sakuradani, E. Indigo-Mediated Semi-Microbial Biofuel Cell Using an Indigo-Dye Fermenting Suspension. Catalysts 2021, 11, 1080. https://doi.org/10.3390/catal11091080

AMA Style

Kikuchi M, Sowa K, Nakagawa K, Matsunaga M, Ando A, Kano K, Takeuchi M, Sakuradani E. Indigo-Mediated Semi-Microbial Biofuel Cell Using an Indigo-Dye Fermenting Suspension. Catalysts. 2021; 11(9):1080. https://doi.org/10.3390/catal11091080

Chicago/Turabian Style

Kikuchi, Mayu, Keisei Sowa, Kasumi Nakagawa, Momoka Matsunaga, Akinori Ando, Kenji Kano, Michiki Takeuchi, and Eiji Sakuradani. 2021. "Indigo-Mediated Semi-Microbial Biofuel Cell Using an Indigo-Dye Fermenting Suspension" Catalysts 11, no. 9: 1080. https://doi.org/10.3390/catal11091080

Find Other Styles
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Article Access Map by Country/Region

1
Back to TopTop