Unified Approach for Prediction of the Volumetric Mass Transfer Coefficients in a Homogeneous and Heterogeneous Bubble Column Based on the Non-Corrected Penetration Theory: Case Studies

A critical review on the improvement of penetration theory is presented in this work. The volumetric liquid-phase mass transfer coefficients kLa seven different liquids (1-butanol, 2-propanol, anilin, decalin, nitrobenzene, tetralin, and ethylene glycol) aerated with air a small bubble column (BC) (inner diameter: 0.095 m) were measured at ambient conditions further analyzed. It was found that values can be predicted satisfactorily basis classical Higbie’s model. gas–liquid contact time defined as ratio Sauter-mean diameter to rise velocity. Moreover, experimental well predicted, not only homogeneous regime, but also transition heterogeneous regimes. This new finding, since date, it considered needs correction factor for successful application any liquid, even regime. predictions above-mentioned imply mean diameters are always ellipsoidal or spherical, which key condition applicability (without correction) theory. In (in work) model-based predictions, estimated by means reliable correlation Wilkinson et al., predicts gradually decreasing size higher gas velocities.