Abstract
Computed values of the effective diffusion coefficient, De, ranging from 4.93 × 10−10 to 5.96 × 10−10 m2/s were obtained from kinetic data for the adsorption of 1,2-dichloropropane from a mixture with air on to activated carbon particles at concentrations within the range 14.94–31.51 g/m3. Such kinetic adsorption data were obtained over the temperature range 24.1–25.8°C. Using the dependence De = f(CA0), it was possible to compare the calculated values of De for 1,2-dichloropropane with the experimental data for 1,2-dichloroethane obtained from adsorption measurements. The values of the effective diffusion coefficients for 1,2-dichloropropane as calculated from its desorption by pure air were within the range 1.67 × 10−10–2.01 × 10−10 m2/s at temperatures of 24.0–24.2°C. The considerable difference between the values of the effective diffusion coefficient for 1,2-dichloropropane in activated carbon particles as estimated from adsorption and desorption data may be associated with the non-linear course of the adsorption isotherm.