Mass transfer from single bubbles in Newtonian liquids

Abstract

The constant volume technique developed by Calderbank has been used for measuring the instantaneous mass transfer rates for single carbon dioxide bubbles with 0·46< d 0<0·85 cm in n-propanol, i-butanol, acetic acid, distilled water and n-octanol aqueous solution. The decay of mass transfer coefficient with bubble age was observed even in clean pure liquids, and the degree of the decay was high for the system of small bubble and the liquid where the solubility and the diffusivity of carbon dioxide were large. An empirical equation for mass transfer coefficient has been proposed taking the effect of bubble age into account.