Biogas Generation in Maceió Landfill from Empirical Models

Abstract

Urban solid waste, disposed of in landfill and from the anaerobic digestion process generates biogas, its reuse minimizes environmental impacts and generates a renewable energy source. The work studied the biogas generation potential of the landfill in the municipality of Maceió, in the state of Alagoas, using the first order kinetic model recommended by CETESB, comparing the empirical data of uncontrolled emissions with data measured in the emission field. controlled, aiming to estimate the collection efficiency by the vertical biogas drains from the landfill, and to estimate the potential of energy generation from the landfill biogas. In the composition of biogas, the percentage of CH₄ found in vertical drains was 56.86% and the average flow rate was 7.4 Nm³ / h, of CH₄ per drain. The biogas production accumulated in 20 years with the LandGEM model was 15,116,325 Nm³, with an accumulated energy of 128.68 GWh and an average generation power of 242 kW. For the Biogas model, the accumulated production is 15.981,110 m3, with an accumulated energy of 141.31 GWh, for an average generation power of 255 kW.