Work

Determination of the biochemical methane potential of swine hydrolyzate

Year: 2024

Type: article

Abstract: 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.

Source: Renewable Energy

DOI: 10.1016/j.renene.2024.121287

Authors: Paulo Simão Domingues, Helena Pala Sousa, Nelson Simões Oliveira, Ana M. Ribeiro, Alexandre Ferreira

Institutions: Universidade de Leiria e Oeste, Universidade do Porto

Language: English

Topic: Anaerobic Digestion and Biogas Production

Subfield: Building and Construction

Field: Engineering

Domain: Physical Sciences

SDGs: Affordable and clean energy, Responsible consumption and production, Zero hunger

Open Access status: hybrid

Estimated APC paid: $4,160