Mass transfer kinetics at water vapor separation from air by adsorption
Gheorghe Asachi Technical University of Iasi, Faculty of Chemical Engineering and Environmental Protection, Department of Chemical Engineering, 73 Prof. Dr. Docent Dimitrie Mangeron Street, 700050 Iasi, Romania
Abstract
This study was initiated in order to investigate experimentally the mass transfer kinetics at water vapor adsorption from air on single layer of spherical silica gel particles. Adsorption rates and their corresponding mass transfer coefficients as well as the evolution in time of these magnitudes are determined experimentally at several values of air flow rate. The influence of gas flow velocity over the adsorption rate and mass transfer coefficient is discussed. Also, based on the obtained experimental data and Fr ssling s criteria equation for mass transfer, values of external and internal resistances to mass transfer and effective diffusivity are calculated.
Keywords
adsorption; diffusion; gas separation; mass transfer; silica gel