Análise de um protótipo de biodigestor anaeróbico e produção de biogás proveniente de esterco animal

Abstract

The present work deals with the manufacture of anaerobic biodigesters for the purpose of producing biogas and its transformation into biomethane, in addition to raising the costs for its manufacture. To enable the production of biogas, two biodigesters were developed: the first, using a 200 liter plastic drum, and the second, with a 100 liter drum. The organic matter used in the process was animal manure of bovine origin, being diluted with water in a pre-established proportion. The two biodigesters developed showed biogas production capacity, which was verified after completely filling tractor air chambers, in addition to flame tests and a chromatographic analysis carried out to observe the presence of methane (CH4). The biogas production process was monitored for thirty days. To carry out biomethanization, a purifying filter was developed with the purpose of eliminating contaminating gases that are harmful to the environment, and increasing the methane content. After the entire production process, all costs for the manufacture of each biodigester were collected to analyze the feasibility of its development. Finally, the collected biogas was used for a chromatographic analysis in order to verify the concentrations of the biogas components.