Novel method for screening microbes for application in microbial fuel cell

Szöllősi, Attila and Rezessy-Szabó, Judit M. and Hoschke, Ágoston and Nguyen, Quang D. (2015) Novel method for screening microbes for application in microbial fuel cell. BIORESOURCE TECHNOLOGY, 179. pp. 123-127. ISSN 0960-8524

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The ability to produce and to transport exo-electrons by microbes either to external acceptors or to electrodes are reported in our study. All investigated microorganisms (exception of Lactobacillus plantarum) exhibited strong iron- reducing capabilities in the absence of mediator meaning production and secretion of exo-electrons to the growth medium. Lactobacillus plantarum, Saccharomyces cerevisiae and Escherichia coli need an electron shuttle molecule to reduce Fe3+ ion. Significant correlation was observed between growth and iron-reducing capacity, as well as between initial cell counts and iron-reducing capacity. Changes of bio-current generated in MFC and iron-reduction were experimentally monitored, and a mathematical model was established by regression analysis. Based on these results, a novel and rapid screening method was developed for the selection of microorganisms for potential application in MFC. The method is based on the measurement of absorbance of bacterial and yeast cultures at 460 nm, providing a robust and high sample throughput approach.

Item Type: Article
Uncontrolled Keywords: Bio-electricity; electron transfer; Microbial fuel cells
Subjects: Q Science / természettudomány > Q1 Science (General) / természettudomány általában
T Technology / alkalmazott, műszaki tudományok > TP Chemical technology / vegyipar, vegyészeti technológia
Depositing User: MTMT SWORD
Date Deposited: 30 Dec 2014 12:14
Last Modified: 30 Dec 2014 12:14

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