Estimativa da geração de biogás e do potencial energético: estudo de caso no aterro sanitário do município de Campo Mourão - Paraná

Abstract

The present study aimed to estimate the biogas generation and the energy potential from solid urban waste (MSW) to be disposed at the Campo Mourão - Paraná Landfill considering a 20¬ year perspective (2021-2040). The geometric progression for population projection was adopted, which ranged from 96,868 to 100,620 inhabitants in the period. To estimate methane generation, the methods of the Intergovernmental Panel on Climate Change (IPCC) and the LandGEM software were used and, subsequently, the energy potential was estimated from the methodology contained in the Manual for the Use of Biogas. The per capita generation of solid waste in the municipality found was 0.73 kg.(inhab.d)-1, added 1% of this value annually to calculate the generation of solid waste and only waste destined for landfill, which represented 96% of total generation. The results obtained, in the year 2041 (peak year), for the annual methane generation (CH4) were 1,581,874.2 m³ according to the LandGEM software and 920,676.3 m³ by the IPCC method. The maximum powers were 0.32 MW and 0.19 MW, using the LandGEM software and the IPCC method, respectively. For maximum energy production, 6.75 MWh.d-1 and 3.93 MWh.d-1 were estimated using the LandGEM software and the IPCC method, respectively. The IPCC method best portrayed the reality of the study, as it used a greater number of available data in relation to the research landfill, in addition to allowing to select the country studied and the climatic condition according to the region. Thus, from the data obtained in the IPCC method, the energy generated in the landfill could supply approximately 767 residences in the municipality in the year of peak methane production, in 2041. Finally, economic feasibility studies are recommended for energy use at the landfill and also monitoring the generation of biogas and methane on site.