Inventário das Emissões de Gás Natural em uma Região do Pampa

Abstract

Methane gas is one of the main gases that contribute to the greenhouse effect, contributing to global warming and consequent climate change. Its main sources of generation are the extraction of fossil fuels, agricultural and livestock activities, urban waste landfills and sewage treatment plants. Among the cities that make up the Pampa region, in the state of Rio Grande do Sul, Pinheiro Machado stands out, for its great activity in livestock, and Candiota, for having the largest mineral coal deposit in the country, in addition to receiving domestic waste from cities in the region and send them to the city's sanitary landfill. Understanding the measurement and quantification of emitted methane gas (EGM) is becoming increasingly important, given its high global warming potential, making this the main objective of this work. For this, this research unfolded in technical visits to mining companies and sanitary landfill in the city of Candiota, combined with bibliographic research about the type of livestock and quantity of herds, by rural properties in Pinheiro Machado. The results showed that livestock emits 357,9 x 106 kg CO2-eq/year, the sanitary landfill emits 312,73 x 106 kg CO2-eq/year and mining emits 12,04 x 106 kg CO2-eq/year. As a proposal for future work, the expansion of the treatment of urban solid waste stands out.