Gluconobacter Oxydans-Based MFC with PEDOT:PSS/Graphene/Nafion Bioanode for Wastewater Treatment

Microbial fuel cells (MFCs) are a variety of bioelectrocatalytic devices that utilize the metabolism of microorganisms to generate electric energy from organic matter. This study investigates the possibility of using a novel PEDOT:PSS/graphene/Nafion composite in combination with acetic acid bacteri...

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Published in	Biosensors (Basel) Vol. 12; no. 9; p. 699
Main Authors	Tarasov, Sergei, Plekhanova, Yulia, Kashin, Vadim, Gotovtsev, Pavel, Signore, Maria, Francioso, Luca, Kolesov, Vladimir, Reshetilov, Anatoly
Format	Journal Article
Language	English
Published	Basel MDPI AG 31.08.2022 MDPI
Subjects	Acetic acid Acetic acid bacteria Bacteria Biocatalysts Biochemical fuel cells boost converter accumulation Cell culture Chemical oxygen demand Consortia Electrodes Energy Gluconobacter oxydans Glycerol Graphene Graphite microbial fuel cell Microorganisms Municipal wastewater Nafion Organic matter Oxidation PEDOT:PSS Pollutants Potassium Pure culture Sodium Wastewater treatment Water treatment United States > US Russia
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Abstract	Microbial fuel cells (MFCs) are a variety of bioelectrocatalytic devices that utilize the metabolism of microorganisms to generate electric energy from organic matter. This study investigates the possibility of using a novel PEDOT:PSS/graphene/Nafion composite in combination with acetic acid bacteria Gluconobacter oxydans to create a pure culture MFC capable of effective municipal wastewater treatment. The developed MFC was shown to maintain its activity for at least three weeks. The level of COD in municipal wastewater treatment was reduced by 32%; the generated power was up to 81 mW/m2 with a Coulomb efficiency of 40%. Combining the MFC with a DC/DC boost converter increased the voltage generated by two series-connected MFCs from 0.55 mV to 3.2 V. A maximum efficiency was achieved on day 8 of MFC operation and was maintained for a week; capacitors of 6800 µF capacity were fully charged in ~7 min. Thus, G. oxydans cells can become an important part of microbial consortia in MFCs used for treatment of wastewaters with reduced pH.
AbstractList	Microbial fuel cells (MFCs) are a variety of bioelectrocatalytic devices that utilize the metabolism of microorganisms to generate electric energy from organic matter. This study investigates the possibility of using a novel PEDOT:PSS/graphene/Nafion composite in combination with acetic acid bacteria Gluconobacter oxydans to create a pure culture MFC capable of effective municipal wastewater treatment. The developed MFC was shown to maintain its activity for at least three weeks. The level of COD in municipal wastewater treatment was reduced by 32%; the generated power was up to 81 mW/m2 with a Coulomb efficiency of 40%. Combining the MFC with a DC/DC boost converter increased the voltage generated by two series-connected MFCs from 0.55 mV to 3.2 V. A maximum efficiency was achieved on day 8 of MFC operation and was maintained for a week; capacitors of 6800 µF capacity were fully charged in ~7 min. Thus, G. oxydans cells can become an important part of microbial consortia in MFCs used for treatment of wastewaters with reduced pH. Microbial fuel cells (MFCs) are a variety of bioelectrocatalytic devices that utilize the metabolism of microorganisms to generate electric energy from organic matter. This study investigates the possibility of using a novel PEDOT:PSS/graphene/Nafion composite in combination with acetic acid bacteria Gluconobacter oxydans to create a pure culture MFC capable of effective municipal wastewater treatment. The developed MFC was shown to maintain its activity for at least three weeks. The level of COD in municipal wastewater treatment was reduced by 32%; the generated power was up to 81 mW/m2 with a Coulomb efficiency of 40%. Combining the MFC with a DC/DC boost converter increased the voltage generated by two series-connected MFCs from 0.55 mV to 3.2 V. A maximum efficiency was achieved on day 8 of MFC operation and was maintained for a week; capacitors of 6800 µF capacity were fully charged in ~7 min. Thus, G. oxydans cells can become an important part of microbial consortia in MFCs used for treatment of wastewaters with reduced pH.Microbial fuel cells (MFCs) are a variety of bioelectrocatalytic devices that utilize the metabolism of microorganisms to generate electric energy from organic matter. This study investigates the possibility of using a novel PEDOT:PSS/graphene/Nafion composite in combination with acetic acid bacteria Gluconobacter oxydans to create a pure culture MFC capable of effective municipal wastewater treatment. The developed MFC was shown to maintain its activity for at least three weeks. The level of COD in municipal wastewater treatment was reduced by 32%; the generated power was up to 81 mW/m2 with a Coulomb efficiency of 40%. Combining the MFC with a DC/DC boost converter increased the voltage generated by two series-connected MFCs from 0.55 mV to 3.2 V. A maximum efficiency was achieved on day 8 of MFC operation and was maintained for a week; capacitors of 6800 µF capacity were fully charged in ~7 min. Thus, G. oxydans cells can become an important part of microbial consortia in MFCs used for treatment of wastewaters with reduced pH. Microbial fuel cells (MFCs) are a variety of bioelectrocatalytic devices that utilize the metabolism of microorganisms to generate electric energy from organic matter. This study investigates the possibility of using a novel PEDOT:PSS/graphene/Nafion composite in combination with acetic acid bacteria Gluconobacter oxydans to create a pure culture MFC capable of effective municipal wastewater treatment. The developed MFC was shown to maintain its activity for at least three weeks. The level of COD in municipal wastewater treatment was reduced by 32%; the generated power was up to 81 mW/m 2 with a Coulomb efficiency of 40%. Combining the MFC with a DC/DC boost converter increased the voltage generated by two series-connected MFCs from 0.55 mV to 3.2 V. A maximum efficiency was achieved on day 8 of MFC operation and was maintained for a week; capacitors of 6800 µF capacity were fully charged in ~7 min. Thus, G. oxydans cells can become an important part of microbial consortia in MFCs used for treatment of wastewaters with reduced pH.
Author	Gotovtsev, Pavel Reshetilov, Anatoly Francioso, Luca Kashin, Vadim Signore, Maria Kolesov, Vladimir Plekhanova, Yulia Tarasov, Sergei
AuthorAffiliation	1 G.K. Skryabin Institute of Biochemistry and Physiology of Microorganisms, Pushchino Center for Biological Research of the Russian Academy of Sciences, Moscow Region, 142290 Pushchino, Russia 5 CNR IMM, Institute for Microelectronics and Microsystems, Via Monteroni, I-73100 Lecce, Italy 3 Biotechnology and Bioenergy Department, National Research Centre “Kurchatov Institute”, 123182 Moscow, Russia 2 FSBIS V.A. Kotelnikov Institute of Radio Engineering and Electronics, Russian Academy of Sciences, 125009 Moscow, Russia 4 Moscow Institute of Physics and Technology (National Research University), Moscow Region, 141701 Dolgoprudny, Russia
AuthorAffiliation_xml	– name: 4 Moscow Institute of Physics and Technology (National Research University), Moscow Region, 141701 Dolgoprudny, Russia – name: 2 FSBIS V.A. Kotelnikov Institute of Radio Engineering and Electronics, Russian Academy of Sciences, 125009 Moscow, Russia – name: 5 CNR IMM, Institute for Microelectronics and Microsystems, Via Monteroni, I-73100 Lecce, Italy – name: 1 G.K. Skryabin Institute of Biochemistry and Physiology of Microorganisms, Pushchino Center for Biological Research of the Russian Academy of Sciences, Moscow Region, 142290 Pushchino, Russia – name: 3 Biotechnology and Bioenergy Department, National Research Centre “Kurchatov Institute”, 123182 Moscow, Russia
Author_xml	– sequence: 1 givenname: Sergei orcidid: 0000-0002-1737-9403 surname: Tarasov fullname: Tarasov, Sergei – sequence: 2 givenname: Yulia orcidid: 0000-0001-6509-1992 surname: Plekhanova fullname: Plekhanova, Yulia – sequence: 3 givenname: Vadim surname: Kashin fullname: Kashin, Vadim – sequence: 4 givenname: Pavel surname: Gotovtsev fullname: Gotovtsev, Pavel – sequence: 5 givenname: Maria surname: Signore fullname: Signore, Maria – sequence: 6 givenname: Luca orcidid: 0000-0002-4500-0421 surname: Francioso fullname: Francioso, Luca – sequence: 7 givenname: Vladimir orcidid: 0000-0001-6427-6362 surname: Kolesov fullname: Kolesov, Vladimir – sequence: 8 givenname: Anatoly orcidid: 0000-0002-9607-253X surname: Reshetilov fullname: Reshetilov, Anatoly
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SubjectTerms	Acetic acid Acetic acid bacteria Bacteria Biocatalysts Biochemical fuel cells boost converter accumulation Cell culture Chemical oxygen demand Consortia Electrodes Energy Gluconobacter oxydans Glycerol Graphene Graphite microbial fuel cell Microorganisms Municipal wastewater Nafion Organic matter Oxidation PEDOT:PSS Pollutants Potassium Pure culture Sodium Wastewater treatment Water treatment
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Title	Gluconobacter Oxydans-Based MFC with PEDOT:PSS/Graphene/Nafion Bioanode for Wastewater Treatment
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