Modelling of heavy metal vaporization from a mineral matrix

摘要

This study deals with the fundamental aspects of the volatilization of heavy metals (HM) during municipal solid waste (MSW) incineration. The thermal treatment of a mode waste was theoretically and experimentally studied in a fluid-bed. A mathematical model was developed to predict the fate of metallic species according to the main phenomena controlling the process: heat and mass transfer (transport phenomena), chemical reactions involving HM, and mechanism of vapour metal species sorption inside the porous matrix. The model assumes local thermodynamic equilibrium between the vapour and the metal compound on the substrate in the pores of a particle.