Design of a series of bucket biodigesters to obtain methane gas and fertilizers from the fermentation of pig manure.
DOI:
https://doi.org/10.24054/aaas.vi1.2044Keywords:
Biodigester, design, biomass, biogas, biofertilizer, biofertilizers, excrement, pig manureAbstract
A six-tank biodigester was designed and built, with each tank measuring 55 gallons, 0.6 m in diameter, and an average height of approximately 0.9 m. The design of the biodigester was influenced by factors such as the desired energy output, the available biomass, the volume of the biodigester, and the average temperature of the location, using pig manure as biomass for a continuous feed system. The volume of each barrel was 208,197 L, for a total biodigester volume of 1,249,182 L (1.3 m³). The average temperature of the site was 30 °C. The longitudinal walls of the pit
had a 10% slope. The slope along the floor was 0.05%. The biodigester was equipped with a biogas collection pipe system, as well as an inlet and outlet box. A network of interconnected pipes was laid at the bottom of the six bins for the distribution of the stabilized biomass. To determine the efficiency of the process in the biodigester, experimental results of physicochemical parameters such as solids, chemical oxygen demand (COD), and methanogenic activity (MA) analysis were evaluated in the laboratory.
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