Gaseificação e pirólise da casca da castanha de caju (ccc) em estudos de avaliação do ciclo de vida (acv) para fins energéticos

Abstract

Cashew Nut Shell (CNS) is a residual biomass from the cashew nut processing process and the proper use of yhis residue has become increasingly attractive. Thus, this work aims to apply the Life Cycle Assessment (LCA) methodology to understand the environmental impacts of these processes , in pilot units withe a processing capacity of 150kg/h, aiming at energy generation. Agate-to-gate (system boundaries) LCA was applied. In the GWP (Global Warming Potential) category, it was found thar burnig coal from pyrolysis emits 114tCO2-eq annually and gasification only 80.4t CO2-eq. The burning syngas in the generator, in both processes was responsible for NOX emissions that sensitizes the POCP (Photo chemical Ozone Formation Potencial) category. In the PM2.5 (2.5μmParticulateMatter) emission category, pyrolysis coal was once again one of the most responsible for the aggravation of the environmental impacts of this category, emitting a total of 21.9 kg of PM2.5-eq, while to gasification process only responsible for issuing 0.25% of this total.