Viabilidade econômica da geração de energia elétrica a partir de biogás em aterro sanitário

Abstract

The studies related to the usage of biogas as a source of electric power are on the agenda for

researches on alternative sources of energy. The biogas energy recovery provides a larger uti- lization of this potentially pollutant gas mixture, in a way to use this source of energy often

ignored and wrongly managed. Allied to that, a subproduct commercialization may provide an economical increase on the company’s cash flow. Therefore, the research problem’s definition question is: is it economically viable to capture and to convert landfill generated biogas into electric power? The study’s major objective is to analyze a biogas capture and conversion to electricity system’s economic viability, having as scenario a sanitary landfill on the state of Rio

Grande do Sul. Methodological procedures of modeling and simulation were used for the gen- eration of 11 scenarios of biogas capture and generation of electric power. The obtained result is that the 11 simulated scenarios are economically viable, reaching positives NPV, IRR higher than the work’s stipulated MARR, with a Discounted Payback of 8,21 years on the optimistic scenario, and an R$0,58/KWh LCOE.