Extracellular electron transfer in yeast-based biofuel cells: A review

Hubenova, Yolina; Mitov, Mario

doi:10.1016/j.bioelechem.2015.04.001

Cited by 96 publications

(41 citation statements)

References 62 publications

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“…Microbial fuel cells (MFCs) are kind of biofuel cells, in which microorganisms are used to produce electrical energy from the bioconversion of organic and inorganic substrates. [1][2][3][4] In order to obtain a high performance MFC system, the electron transfer efficiency in all parts of the MFC is very important. The bioanode material plays a major role in ensuring the viability of the bacterial cells immobilized onto its surface.…”

Section: Introductionmentioning

confidence: 99%

Development of a Bioanode for Microbial Fuel Cells Based on the Combination of a MWCNT‐Au‐Pt Hybrid Nanomaterial, an Osmium Redox Polymer and Gluconobacter oxydans DSM 2343 Cells

et al. 2017

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In this work, a carbon felt electrode (CFE) was modified with a multiwalled carbon nanotube‐gold‐platinum (MWCNT−Au‐Pt) hybrid nanomaterial and integrated with an osmium redox polymer (OsRP, [Os(2, 2’‐bipyridine)2(poly‐vinylimidazole)10Cl]Cl) and Gluconobacter oxydans DSM 2343 (G. oxydans) cells. The developed electrode was used as the bioanode in a 5.0 mM K3Fe(CN)6 mediator containing phosphate buffer (pH 6.5) anolyte and combined with a Pt wire cathode in phosphoric acid medium (pH 3.5). As a result, a two chamber microbial fuel cell (MFC) was formed, in which an activated Nafion membrane was used as a proton exchange membrane. The OsRP/G.oxydans/MWCNT−Au‐Pt/CFE based bioanode was electrochemically examined in differently deoxygenated bioanode chambers and additionally the amounts of hybrid nanomaterial and OsRP were optimized. In terms of MFC characteristics, it was found that an anaerobic OsRP/G.oxydans/MWCNT−Au‐Pt/CFE bioanode based MFC had a maximum power density of 32.1 mW m−2 (at 90 mV), a maximum current density of 1032 mA m−2 and a charge transfer efficiency (E%) value of 22.30 (open circuit potential 180 mV).

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Section: Introductionmentioning

confidence: 99%

Development of a Bioanode for Microbial Fuel Cells Based on the Combination of a MWCNT‐Au‐Pt Hybrid Nanomaterial, an Osmium Redox Polymer and Gluconobacter oxydans DSM 2343 Cells

et al. 2017

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“…Frequently, the EET pathway is a bottleneck for further improving the voltage output of exoelectrogens [31]. It consists of an indirect electron shuttle-meditated pathway [32] and the direct pathways, including appendages [33], nanowires [34] and c-type cytochrome [35].…”

Section: Improvement Of Mfc By Eet Enhancementmentioning

confidence: 99%

Potential of Zymomonas mobilis as an electricity producer in ethanol production

Geng

Cao

et al. 2020

Preprint

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Background: Microbial fuel cell (MFC) convokes microorganism to convert biomass into electricity. However, most well-known electrogenic strains can not directly use glucose to produce valuable products. Zymomonas mobilis, a promising bacterium for ethanol production, owns special Entner-Doudoroff pathway with less ATP and biomass produced and the low energy-coupling respiration, making Z. mobilis a potential exoelectrogen. Results: A glucose-consumed MFC is constructed by inoculating Z. mobilis. The electricity with power density 2.0 mW m-2 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 c-type cytochrome benefits 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 Z. mobilis 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.

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“…Frequently, the EET pathway is a bottleneck for further improving the voltage output of exoelectrogens [27]. It consists of an indirect electron shuttle-meditated pathway [28] and the direct pathways, including appendages [29], nanowires [30] and c-type cytochrome [31].…”

Section: Improvement Of Mfc By Eet Enhancementmentioning

confidence: 99%

Potential of Zymomonas mobilis as an electricity producer in ethanol production

Geng

Cao

et al. 2019

Preprint

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Background Microbial fuel cell (MFC) convokes microorganism as workhorse to convert biomass into electricity. However, most well-known electrogenic strains can not directly use glucose to produce valuable products. Zymomonas mobilis , a promising bacterial for ethanol production, owns special Entner-Doudoroff pathway with less ATP and biomass produced and the low energy-coupling respiration, making Z. mobilis a potential exoelectrogen. Results A glucose-consumed MFC is constructed by inoculating Z. mobilis . The electricity with power density 2.0 mW m -2 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 c -type cytochrome benefits 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 idea voltage. Conclusion This study identifies potential feature of electricity activity for Z. mobilis 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.

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Extracellular electron transfer in yeast-based biofuel cells: A review

Cited by 96 publications

References 62 publications

Development of a Bioanode for Microbial Fuel Cells Based on the Combination of a MWCNT‐Au‐Pt Hybrid Nanomaterial, an Osmium Redox Polymer and Gluconobacter oxydans DSM 2343 Cells

Development of a Bioanode for Microbial Fuel Cells Based on the Combination of a MWCNT‐Au‐Pt Hybrid Nanomaterial, an Osmium Redox Polymer and Gluconobacter oxydans DSM 2343 Cells

Potential of Zymomonas mobilis as an electricity producer in ethanol production

Potential of Zymomonas mobilis as an electricity producer in ethanol production

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