Análise do desempenho ambiental do GNV como combustível para a coleta de resíduos sólidos urbanos

Abstract

Due to the growing concerns with the environmental problems caused by the use of heavy fuel oil, is increasingly the incentive to clean fuels, mainly in the field of transport. In this study, emissions of a truck of garbage collection in route in the city of Porto Alegre fuelled with CNG and biogas were monitored. A truck from the ELCD® database moved by diesel was used for comparison of this fuel. Life Cycle Assessment (LCA) methodology was used to assess the environmental impacts of CNG and biogas in phase of use in this vehicle. For the majority analyzed situations for the CNG, the global warming potential was approximately 10 kg CO2-Eq. /km rotated, the acidification potential and terrestrial eutrophication were 0.5 and 0.04 m² /km rotated, respectively. The database truck moved by diesel had less potential for global warming and acidification and greater potential for eutrophication terrestrial, when compared to CNG; and better performance in all categories front to biogas. The study enabled to identify the main responsible for impacts, and observe the emissions profile in different traffic conditions.