Estimativa do potencial energético a partir da produção de biogas de RSU no estado da Paraíba

The negative environmental impacts resulting from improper final disposal of organic waste decreases the quality of surface water and groundwater in large proportions, high concentrations of organic nutrients such as phosphorus and nitrogen cause eutrophication. The lack of treatment of such waste causes the generation of greenhouse gases (GHG) that directly influence global warming. Among the gases most aggressive to the atmosphere is methane (CH4), present in the biogas composition. Anaerobic digestion is a process used to reduce the organic load of the putrescível residues and in the same proportion, to produce fertilizer of the own residue and biogas. In this perspective, the energetic use of this gas occurs for various sources of energy, including electricity. The energy utilization of the RSU, reduces the emission of pollutant gases, allows the generation of thermal or electric energy in substitution without the use of fossil fuels. The non-emission of pollutants can be accredited for the generation of carbon credits, which are marketed in the market. The present work has the purpose of identifying the potential of electric energy production from organic solid wastes, estimated the total value of 29.386.550 m3 CH4 / year, thus presenting a favorable energy potential for the production of electric energy, considering the very high methane heat output.