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Improved Energy Efficiency in Microbial Fuel Cells by Bioethanol and Electricity Co-generation by Rong Xie; Shuang Wang; Kai Wang; Meng Wang; Biqiang Chen; Zheng Wang; Tianwei Tan is a Biochemistry, Genetics and Molecular Biology article available to read on EtoBox.

What is Improved Energy Efficiency in Microbial Fuel Cells by Bioethanol and Electricity Co-generation about?

## Background: Microbial electricity production has received considerable attention from researchers due to its environmental friendliness and low price. the increase in the number of intracellular electrons in a microbial fuel cell (mfc) helps to improve the mfc performance. ## Results: In this study, we accumulated excess electrons intracellularly by knocking out the gene related to intracellular electron consumption in saccharomyces cerevisiae, and the elevated intracellular electron pool positively influenced the performances of mfcs in terms of electricity production, while helping to increase ethanol production and achieve ethanol and electricity co-production, which in turn improved the utilization of substrates. the final knockout strain reached a maximum ethanol yield of 7.71 g/l and a maximum power density of 240 mw/m in the mfc, which was 12 times higher than that of the control bacteria, with a 17.3% increase in energy utilization. ## Conclusions: The knockdown of intracellular electron-consuming genes reported here allowed the accumulation of excess electrons in cells, and the elevated intracellular electron pool positively influenced the electrical production performa

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Author

Rong Xie; Shuang Wang; Kai Wang; Meng Wang; Biqiang Chen; Zheng Wang; Tianwei Tan

Publisher

Springer Science and Business Media LLC

Published

2022

Language

EN

Field

Biochemistry, Genetics and Molecular Biology (Life Sciences)