Estimativa teórica do potencial energético da biomassa gerada nos municípios que compõem o consórcio público de manejo de resíduos sólidos da região dos sertões de Crateús

Abstract

The efficient management of urban solid waste is one of the goals of the National Policy on Solid Waste Law No. 12,305/2010 not yet achieved in many regions of Brazil. The increase in the disposal of materials directly proportional to population growth, without an appropriate structure, brings serious problems to the environment and society. In the process of anaerobic decomposition of waste biomass, biogas is released, composed mostly of methane (CH4), Greenhouse Gases - GHG that contribute to global warming, but methane is an energy gas and can be used in generation of electrical energy. This work aimed to theoretically estimate the energy potential of the sum of urban solid waste from 8 municipalities in the region of Sertıes de Crate˙s. The LandGEM Landfill Gas Emissions Model software, version 3.02, from the American Environmental Protection Agency (EPA) was used to estimate the amount of methane generated in the municipalities of the Public Consortium for Solid Waste Management in the Sertıes de Crate˙s Region that will be deposited in a hypothetical landfill. Considering a 15-year projection of adding waste to the landfill, a maximum peak of methane generation is estimated in the year 2039, with a potential of 49,052,980 KWh/year and 4,087,748 KWh/month. These data show that there is potential to generate solid waste from the consortium, which would meet the energy needs of 2,089 to 30,056 homes in the region, thus reducing the emission of gases into the atmosphere.