Experimental data on the liquid-phase mixing in bubble columns were obtained with air and various liquids by using a transient-state measurement technique. The effect of the liquid physical properties on the liquid-phase longitudinal dispersion coefficient was studied. The liquid-phase dispersion coefficient was found to vary with the viscosity of the liquid, the superficial gas velocity and the column diameter. A new correlation for the liquid-phase dispersion coefficient is presented and shown to correlate the experimental data with an average deviation of 3.07%.
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