Improvement of Biogas Yield by Pre-Treating Poultry Waste with Bacterial Strains

Krystyna Cybulska, Ilona Kołosowska, Karol Kramkowski, Monika Karpińska, Katarzyna Roszkowicz-Ostrowska and Paweł Kowalczyk
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Krystyna Cybulska: Department of Microbiology and Environmental Biochemistry, Faculty of Environmental Management and Agriculture, West Pomeranian University of Technology in Szczecin, 70-310 Szczecin, Poland
Ilona Kołosowska: Department of Microbiology and Environmental Biochemistry, Faculty of Environmental Management and Agriculture, West Pomeranian University of Technology in Szczecin, 70-310 Szczecin, Poland
Karol Kramkowski: Department of Physical Chemistry, Medical University of Bialystok, 15-089 Bialystok, Poland
Monika Karpińska: Department of Animal Nutrition, The Kielanowski Institute of Animal Physiology and Nutrition, Polish Academy of Sciences, Instytucka 3, 05-110 Jabłonna, Poland
Katarzyna Roszkowicz-Ostrowska: Department of Animal Nutrition, The Kielanowski Institute of Animal Physiology and Nutrition, Polish Academy of Sciences, Instytucka 3, 05-110 Jabłonna, Poland
Paweł Kowalczyk: Department of Animal Nutrition, The Kielanowski Institute of Animal Physiology and Nutrition, Polish Academy of Sciences, Instytucka 3, 05-110 Jabłonna, Poland

Energies, 2021, vol. 14, issue 18, 1-15

Abstract: Poultry waste is increasingly used as a substrate for the methane fermentation process in a biogas plant. However, not all waste materials processed in the meat industry meet the criteria for optimal process management and cost-effective methane efficiency. An example may be centrifuged biological sludge, etc. Treatment of such material used as a substrate by introducing new metabolically and enzymatically active strains of bacteria could be beneficial for the fermentation process in a biogas plant and provide increased energy efficiency. The aim of the study was to compare the amount and quality of biogas obtained from biological sludge from the processing of poultry vaccinated with metabolically diversified bacterial inoculum after initial incubation of the batch before the actual process in a biofermenter. Laboratory tests were carried out in accordance with the guidelines contained in the DIN 38 414-S8 and VDI 4630 standards. Based on the obtained results, it was found that the optimized biological sludge can be used as a substrate in the methane fermentation process in a biogas plant. The material processed by the combination of bacterial strains marked with the symbols A/C, E/G, and F/H showed a significantly increased efficiency of biogas, including methane, compared to the non-grafted material. This is a good predictor for industrial applications, process feasibility, economic viability, and environmental sustainability that should be compiled based on the results obtained from this study.

Keywords: bacterial strains; bacterial enzymatic activity; biological sludge; poultry waste; pre-treatment; biogas production (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 (1)

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