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Microbial Structure and Energy Generation in Microbial Fuel Cells Powered with Waste Anaerobic Digestate

Author

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  • Dawid Nosek

    (Department of Environmental Biotechnology, University of Warmia and Mazury in Olsztyn, Słoneczna 45 G, 10-709 Olsztyn, Poland)

  • Agnieszka Cydzik-Kwiatkowska

    (Department of Environmental Biotechnology, University of Warmia and Mazury in Olsztyn, Słoneczna 45 G, 10-709 Olsztyn, Poland)

Abstract

Development of economical and environment-friendly Microbial Fuel Cells (MFCs) technology should be associated with waste management. However, current knowledge regarding microbiological bases of electricity production from complex waste substrates is insufficient. In the following study, microbial composition and electricity generation were investigated in MFCs powered with waste volatile fatty acids (VFAs) from anaerobic digestion of primary sludge. Two anode sizes were tested, resulting in organic loading rates (OLRs) of 69.12 and 36.21 mg chemical oxygen demand (COD)/(g MLSS∙d) in MFC1 and MFC2, respectively. Time of MFC operation affected the microbial structure and the use of waste VFAs promoted microbial diversity. High abundance of Deftia sp. and Methanobacterium sp. characterized start-up period in MFCs. During stable operation, higher OLR in MFC1 favored growth of exoelectrogens from Rhodopseudomonas sp. (13.2%) resulting in a higher and more stable electricity production in comparison with MFC2. At a lower OLR in MFC2, the percentage of exoelectrogens in biomass decreased, while the abundance of genera Leucobacter, Frigoribacterium and Phenylobacterium increased. In turn, this efficiently decomposed complex organic substances, favoring high and stable COD removal (over 85%). Independent of the anode size, Clostridium sp. and exoelectrogens belonging to genera Desulfobulbus and Acinetobacter were abundant in MFCs powered with waste VFAs.

Suggested Citation

  • Dawid Nosek & Agnieszka Cydzik-Kwiatkowska, 2020. "Microbial Structure and Energy Generation in Microbial Fuel Cells Powered with Waste Anaerobic Digestate," Energies, MDPI, vol. 13(18), pages 1-12, September.
    • Handle: RePEc:gam:jeners:v:13:y:2020:i:18:p:4712-:d:411435
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    References listed on IDEAS

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    1. Chen, Shuiliang & Patil, Sunil A. & Brown, Robert Keith & Schröder, Uwe, 2019. "Strategies for optimizing the power output of microbial fuel cells: Transitioning from fundamental studies to practical implementation," Applied Energy, Elsevier, vol. 233, pages 15-28.
    2. Hassan, Sedky H.A. & el Nasser A. Zohri, Abd & Kassim, Rehab M.F., 2019. "Electricity generation from sugarcane molasses using microbial fuel cell technologies," Energy, Elsevier, vol. 178(C), pages 538-543.
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    Cited by:

    1. Segundo Rojas-Flores & Magaly De La Cruz-Noriega & Luis Cabanillas-Chirinos & Renny Nazario-Naveda & Moisés Gallozzo-Cardenas & Félix Diaz & Emzon Murga-Torres, 2023. "Potential Use of Coriander Waste as Fuel for the Generation of Electric Power," Sustainability, MDPI, vol. 15(2), pages 1-10, January.
    2. Dawid Nosek & Tomasz Mikołajczyk & Agnieszka Cydzik-Kwiatkowska, 2023. "Anode Modification with Fe 2 O 3 Affects the Anode Microbiome and Improves Energy Generation in Microbial Fuel Cells Powered by Wastewater," IJERPH, MDPI, vol. 20(3), pages 1-21, January.
    3. Dawid Nosek & Piotr Jachimowicz & Agnieszka Cydzik-Kwiatkowska, 2020. "Anode Modification as an Alternative Approach to Improve Electricity Generation in Microbial Fuel Cells," Energies, MDPI, vol. 13(24), pages 1-22, December.
    4. Agnieszka Cydzik-Kwiatkowska & Dawid Nosek, 2022. "Advances in Microbial Fuel Cell Technologies," Energies, MDPI, vol. 15(16), pages 1-3, August.
    5. Roman Lepikash & Daria Lavrova & Devard Stom & Valery Meshalkin & Olga Ponamoreva & Sergey Alferov, 2024. "State of the Art and Environmental Aspects of Plant Microbial Fuel Cells’ Application," Energies, MDPI, vol. 17(3), pages 1-24, February.
    6. Artur Mielcarek & Kamil Łukasz Bryszewski & Karolina Kłobukowska & Joanna Rodziewicz & Wojciech Janczukowicz, 2024. "Energy Production in Microbial Fuel Cells (MFCs) during the Biological Treatment of Wastewater from Soilless Plant Cultivation," Energies, MDPI, vol. 17(3), pages 1-15, January.

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