Hydrogen Dark Fermentation for Degradation of Solid and Liquid Food Waste

Vira Hovorukha, Olesia Havryliuk, Galina Gladka, Oleksandr Tashyrev, Antonina Kalinichenko, Monika Sporek and Agnieszka Dołhańczuk-Śródka
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Vira Hovorukha: Department of Extremophilic Microorganisms Biology, Zabolotny Institute of Microbiology and Virology of the National Academy of Sciences of Ukraine, 03143 Kyiv, Ukraine
Olesia Havryliuk: Department of Extremophilic Microorganisms Biology, Zabolotny Institute of Microbiology and Virology of the National Academy of Sciences of Ukraine, 03143 Kyiv, Ukraine
Galina Gladka: Department of Extremophilic Microorganisms Biology, Zabolotny Institute of Microbiology and Virology of the National Academy of Sciences of Ukraine, 03143 Kyiv, Ukraine
Oleksandr Tashyrev: Department of Extremophilic Microorganisms Biology, Zabolotny Institute of Microbiology and Virology of the National Academy of Sciences of Ukraine, 03143 Kyiv, Ukraine
Antonina Kalinichenko: Institute of Environmental Engineering and Biotechnology, University of Opole, 45-040 Opole, Poland
Monika Sporek: Institute of Biology, University of Opole, 45-040 Opole, Poland
Agnieszka Dołhańczuk-Śródka: Institute of Environmental Engineering and Biotechnology, University of Opole, 45-040 Opole, Poland

Energies, 2021, vol. 14, issue 7, 1-12

Abstract: The constant increase in the amount of food waste accumulating in landfills and discharged into the water reservoirs causes environment pollution and threatens human health. Solid and liquid food wastes include fruit, vegetable, and meat residues, alcohol bard, and sewage from various food enterprises. These products contain high concentrations of biodegradable organic compounds and represent an inexpensive and renewable substrate for the hydrogen fermentation. The goal of the work was to study the efficiency of hydrogen obtaining and decomposition of solid and liquid food waste via fermentation by granular microbial preparation (GMP). The application of GMP improved the efficiency of the dark fermentation of food waste. Hydrogen yields reached 102 L/kg of solid waste and 2.3 L/L of liquid waste. The fermentation resulted in the 91-fold reduction in the weight of the solid waste, while the concentration of organics in the liquid waste decreased 3-fold. Our results demonstrated the potential of granular microbial preparations in the production of hydrogen via dark fermentation. Further development of this technology may help to clean up the environment and reduce the reliance on fossil fuels by generating green hydrogen via recycling of household and industrial organic wastes.

Keywords: biohydrogen; green energy; fermentation; solid food waste; liquid food waste; environmental biotechnology (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2021
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (5)

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