IMPACT OF STRUCTURED PACKING ON BUBBLE COLUMN MASS TRANSFER CHARACTERISTICS EVALUATION. Part 3. Sensitivity of ADM Volumetric Mass Transfer Coefficient evaluation

Ana Lakota

Faculty of Chemistry and Chemical Technology, University of Ljubljana, Aškerčeva 5, SI-1000 Ljubljana, Slovenia

Abstract

Based on the available concentration profiles the present work discusses the sensitivity of volumetric mass transfer coefficient on axial dispersion coefficient. The calculations were performed for a bubble column without internals, the parameters of ADM were determined with nonlinear regression. The volumetric mass transfer coefficient shows a slight dependence on the axial dispersion coefficient which leads to the conclusion that ADM provides reasonable values for k_La whenever more or less reliable correlation for E_L is available. Nevertheless, the exact concentration profile evaluation requires E_L to be determined with caution.