Title Baker’s yeast-based microbial fuel cell mediated by 2-methyl-1,4-naphthoquinone /
Authors Rožėnė, Justė ; Morkvėnaitė-Vilkončienė, Inga ; Bružaitė, Ingrida ; Zinovičius, Antanas ; Ramanavičius, Arūnas
DOI 10.3390/membranes11030182
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Is Part of Membranes: Special issue: Membranes for electrochemical devices.. Basel : MDPI. 2021, vol. 11, iss. 3, art. no. 182, p. 1-10.. ISSN 2077-0375
Keywords [eng] baker’s yeast cells ; Saccharomyces cerevisiae ; microbial fuel cell ; 2-methyl-1,4-naphthoquinone ; biofuel cell ; graphite rod electrode
Abstract [eng] Microbial fuel cell (MFC) efficiency depends on charge transfer capability from microbe to anode, and the application of suitable redox mediators is important in this area. In this study, yeast viability experiments were performed to determine the 2-methyl-1,4-naphthoquinone (menadione (MD)) influence on different yeast cell species (baker’s yeast and Saccharomyces cerevisiae yeast cells). In addition, electrochemical measurements to investigate MFC performance and efficiency were carried out. This research revealed that baker’s yeast cells were more resistant to dissolved MD, but the current density decreased when yeast solution concentration was incrementally increased in the same cell. The maximal calculated power of a designed baker’s yeast-based MFC cell anode was 0.408 mW/m2 and this power output was registered at 24 mV. Simultaneously, the cell generated a 62-mV open circuit potential in the presence of 23 mM potassium ferricyanide and the absence of glucose and immobilized MD. The results only confirm that MD has strong potential to be applied to microbial fuel cells and that a two-redox-mediator-based system is suitable for application in microbial fuel cells.
Published Basel : MDPI
Type Journal article
Language English
Publication date 2021
CC license CC license description