Potential of As an Electricity Producer in Ethanol Production

Overview

Journal Biotechnol Biofuels

Publisher Biomed Central

Specialty Biotechnology

Date 2020 Mar 12

PMID 32158500

Citations 2

Authors

Bo-Yu Geng

Lian-Ying Cao

Feng Li

Hao Song

Chen-Guang Liu

Xin-Qing Zhao

Feng-Wu Bai

Affiliations

Soon will be listed here.

Abstract

Background: Microbial fuel cell (MFC) convokes microorganism to convert biomass into electricity. However, most well-known electrogenic strains cannot directly use glucose to produce valuable products. , a promising bacterium for ethanol production, owns special Entner-Doudoroff pathway with less ATP and biomass produced and the low-energy coupling respiration, making a potential exoelectrogen.

Results: A glucose-consuming MFC is constructed by inoculating . The electricity with power density 2.0 mW/m is derived from the difference of oxidation-reduction potential (ORP) between anode and cathode chambers. Besides, two-type electricity generation is observed as glucose-independent process and glucose-dependent process. For the sake of enhancing MFC efficiency, extracellular and intracellular strategies are implemented. Biofilm removal and addition of -type cytochrome benefit electricity performance and Tween 80 accelerates the electricity generation. Perturbation of cellular redox balance compromises the electricity output, indicating that redox homeostasis is the principal requirement to reach ideal voltage.

Conclusion: This study identifies potential feature of electricity activity for and provides multiple strategies to enhance the electricity output. Therefore, additional electricity generation will benefit the techno-economic viability of the commercial bulk production for biochemicals or biofuels in an efficient and environmentally sustainable manner.

Citing Articles

Metabolic regulation boosts bioelectricity generation in Zymomonas mobilis microbial fuel cell, surpassing ethanol production.

Ahmadpanah H, Motamedian E, Mardanpour M Sci Rep. 2023; 13(1):20673.

PMID: 38001147 PMC: 10673858. DOI: 10.1038/s41598-023-47846-7.

Microbial electro-fermentation for synthesis of chemicals and biofuels driven by bi-directional extracellular electron transfer.

Gong Z, Yu H, Zhang J, Li F, Song H Synth Syst Biotechnol. 2020; 5(4):304-313.

PMID: 32995586 PMC: 7490822. DOI: 10.1016/j.synbio.2020.08.004.

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