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First order models to estimate methane generation in landfill: A case study in south Brazil

2020; Elsevier BV; Volume: 8; Issue: 4 Linguagem: Inglês

10.1016/j.jece.2020.104053

2213-3437

Nicole Fernandes da Silva, Guilherme Pereira Schoeler, Vitor Alves Lourenço, Pierre Luz de Souza, Cassia Brocca Caballero, Rafael Hollweg Salamoni, Rúbia Flores Romani,

Atmospheric and Environmental Gas Dynamics

Biogas is an important alternative source of energy in the National Interconnected System (SIN) of Brazil, being a strategic option that offers economic advantages and reduction of negative environmental impacts arising from the use of fossil fuels. Therefore, this study aimed to estimate biogas and methane gas generation in a landfill located in the municipality of Minas do Leão, in the south of Brazil. Methane gas volume was estimated using three first-order decay models: CDM Tool, LandGem, and IPCC. CDM Tool model estimation for methane gas was 28E05m3 for the year of the greatest generation, 2025. While for LandGem and IPCC Models, the peak generation was observed in 2026, and methane gas estimates were 107E05m3 and 23E05m3, respectively. CDM Tool and IPCC Models showed similar results, revealing greater precision and thus reliability. On the other hand, the LandGem model overestimated generation.