Análise do potencial de geração de energia elétrica oriundo do biogás gerado a partir dos resíduos sólidos urbanos do município de Caxias do Sul - RS

Abstract

Most of the urban solid waste (USW) in Brazil is inappropriate dumped, therefore, it causes environmental, social and public health impacts. Methane, an anaerobic degradation product of the USW, is considered hazardous for causing the greenhouse effect. This gas can provide financial payback for the management company, besides, it can reduce the impacts in the environment if the gas is burned or used properly in landfills. This paper aims to estimate the capacity of production of electric power produced from the exploitation of biogas resulting from the urban solid waste at the Rincão das Flores landfill in the city of Caxias do Sul, RS, using the methodologies suggested by IPCC.The landfill has an average capacity to generate electric power similar to 931MWh/month with 1.5MW as average power. In conclusion, an evaluation about economic feasibility was made using engineering tools as payback deducted, net present value and internal rate of return. The investiment has been considered cost-effective, it may take less than 9 years for the investiment value to pay off and a 66% of profit at the end of term as the project progresses. [resumo fornecido pelo autor]