ISSN: 1659-2751



Implementation of a System to Generate Electricity from Biogas at EARTH University’s Integrated Livestock Farm


The objective of this study was to design and install an integrated biodigester system for the production of biogas from animal manure and for subsequent generation of electrical energy. Tests with biogas were carried out to reduce the content of H2S (hydrogen sulfide), CO2 (carbon dioxide) and CO (carbon monoxide). CaO (calcium oxide), Ca(OH)2 (calcium hydroxide) and CaSO4 (calcium sulfate) suspensions were used as filters, along with an iron fractions filter, used exclusively to diminish the concentration of H2S (hydrogen sulfide). Results obtained showed that the iron fractions filter did not reduce the concentration of the H2S in the biogas; instead, it was the bubbling of the biogas inside the liquid solution contained in the calcium oxide filter that reduced considerably the concentration of H2S, CO2 and CO present in the biogas. In conclusion, the best filter to retain these undesirable gases is the CaO solution.

Key words: Hydrogen sulfide, biodigesters, biogas, carbon dioxide, energy, iron fraction filter, carbon monoxide, calcium oxide.

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