Ganhos econômicos com créditos de carbono: uma estimativa para o aterro sanitário em Campina Grande - PB.

Abstract

The disposition of Urban Solid Waste (MSW) in landfills is a more common norm worldwide, but a measure that the waste is biodegraded, generate by-products, among them are those that make high concentrations of methane, being a Greenhouse Effect (GEE). It is estimated that methane has a potential polluter 21 times greater than carbon dioxide. The objective of the study is to quantify the gains from the sale of carbon credits by burning the methane produced in a waste pile at the Sanitary Landfill in Campina Grande-PB. The experimental field used to our knowledge likewise Cell 2 of said landfill, which took place between December 2015 and May 2016. It was stored in Cell 2, with the intention of improving the projection of its generation during 15 years of landfill operations . In addition, it was the time spent for the installation of a biogas burning system and the time of return of the investment. The results were calculated with a L0 parameter of 118, 68 Nm³CH4.t-1 for the residues of Cell 2. Thus, the quantity of 5,284,199.54 m³ of generated methane was estimated in 15 years of operation and one gross revenue of R $ 2,588,625.90, and an investment return rate of 1.8 years, considering an optimistic scenario of waste biodegradation; and a methane outflow of 4,132,540.92 m³, with a gross revenue of R $ 2,024,450.89 and a return time of approximately 2.9 years, for a conservative scenario of biodegradation of waste residues.