Collect. Czech. Chem. Commun. 1998, 63, 614-621

Diffusion of 1,2-Dichloroethane in Particles of Activated Carbon

Daniel Bobok and Eva Besedov√°

Department of Chemical Engineering, Slovak University of Technology, Faculty of Chemical Technology, 812 37 Bratislava, Slovak Republic


Simultaneous diffusion and adsorption of 1,2-dichloroethane from air into activated carbon particles was studied at ambient temperature. The measurements were carried out in adsorbers with a bed height equal to the diameter of activated carbon particles. On the basis of the assumption of diffusion and adsorption in a quasihomogenous porous medium, effective diffusion coefficients were calculated. Their values are linearly dependent on the concentration of adsorptive in the inlet gas. For the evaluation of errors, mass transfer resistances in the fluid and solid phases were calculated. The maximum value of the former did not exceed 12.5% of the overall resistance.

Keywords: Adsorption; Diffusion; Activated carbon; 1,2-Dichloroethane.