Abstract
ABSTRACT Sodium chloride aerosols were generated from a 1.0 percent solution and passed through a tubular furnace, then recondensed at 29°C in a cooling section in the presence of SO2. The dry particles ranged from 0.711 to 0.843 µm and the condensed droplets were in the 1.66 to 2.88 µm range. Final droplet size was varied by controlling the temperature of the nebulizer solution between 17 and 50°C. The SO2 concentration in the gas phase of the condensing cloud was varied between 0.5x10 − 3 and 2.5 xl0 − 3 atm. Cloud droplets were separated from the gas stream in a point-to-plane electrostatic precipitator and the droplets analyzed colorimetrically for total sulfur content. Concentrations of SO2 in the aqueous phase were about one order of magnitude greater than values obtained from equilibrium constants. The collection rate of SO2 at 29°C appeared to be first order in SO2 gas phase concentrations. A model for this process was constructed, based on the hydrate formation in the gas-water interface[SO2]g + ...
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