| dc.description.abstract | As part of Work Package 5 of the EU FP5 EMECAP project, dispersion model calculations have been carried out in order to determine the concentration and deposition of Mercury in the region surrounding 3 selected Mercury Cell Chlor-Alkali (MCCA) plants. This report details the dispersion and chemistry modelling that has been carried out on the Rosignano Solvay plant in Italy.
The meteorological model TAPM, coupled to the off–line chemistry and dispersion model EPISODE, has been used to calculate concentrations of Gaseous Elemental Mercury (GEM) around the MCCA plant. A chemical scheme describing transformations and deposition rates has been developed and applied. Comparisons are made with measurements made during the EMECAP campaigns and average concentration and deposition fields are calculated. In addition a ventilated box chemistry model has been applied to simulate reactions within the MCCA plants themselves. The aim is to determine if simple homogenous gas phase chemistry can explain the measured concentrations of Reactive Gaseous Mercury (RGM) in the plants. | |
