ANALYSES OF GREENHOUSE GAS EMISSION FROM SOLID WASTE CO-PROCESSING AT CEMENT INDUSTRY

Abstract

Cement plants are responsible for approximately 3% of the world's greenhouse gas (GHG) emissions and for approximately 5% of CO2 emissions. One of the alternatives used to reduce GHG emissions in the cement industry is the use of alternative fuels through the co-processing of Solid Waste (RS) and the use of biomass. This study aims to analyze the GHG emissions mitigation of a cement plant in the Federal District, Brazil, based on the use of alternative fuels, focusing on the coprocessing of RS in the cement production process. The methodology applied was the Life Cycle Assessment (LCA) with the impact category “climate change”. It was concluded that, among the analyzed scenarios, the one representing the use of 70% of petroleum coke and 30% of Agricultural Solid Waste (RSA) is the best alternative for generating heat in clinker kilns from the GHG emissions perspective.