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Orientador(es)
Resumo(s)
Swine farming generates remains of births and animals that die during the process. Implementing a plan to eliminate these materials by hydrolysis process results in an animal by-product called swine hydrolyzate. The treatment of this by-product through its application in the anaerobic digestion process can also represent its conversion into a resource for energy production. Thus, the present study focuses on this by-product as a potential substrate for anaerobic digestion, evaluating the methane production potential. The results show biogas production with an average methane content of about 70 %. Theoretical biochemical methane potential was 967.95 ± 0.11 mL g VS−1, which represented a bioconversion efficiency of 59.97 ± 3.54 % and 62.26 ± 0.43 %, considering the experimental results of 580.47 ± 34.29 mL g VS−1 and 602.67 ± 4.16 mL g VS−1, respectively. By comparing the experimental biochemical methane potential with the predicted value using the modified Gompertz model, it was possible to conclude that the maximum methane production rate was 73.46 ± 0.36 mL g VS−1 day−1, with a digestion time of 18 days to obtain 90 % of the methane production potential.
Descrição
Article number - 121287
Palavras-chave
Ammonia inhibition Anaerobic digestion Biogas BMP tests Methane production Swine hydrolyzate
Contexto Educativo
Citação
Domingues, Paulo Simão & Sousa, Helena Pala & Oliveira, Nelson Simões & Ribeiro, Ana M. & Ferreira, Alexandre, 2024. "Determination of the biochemical methane potential of swine hydrolyzate," Renewable Energy, Elsevier, vol. 235(C).
Editora
Elsevier