Mass transfer coefficients in two-phase aqueous extraction

Abstract

Mass transfer coefficients were measured in a 51 mm i.d. stirred cell with a plane interface. An aqueous solution of Dextran formed the heavy phase and an aqueous solution of polyethyleneglycol formed the light phase. The transfer of bovine serum albumin (BSA) was investigated. The effects of stirring speed, pH and phase concentrations on the mass transfer coefficient were studied. Values of the partition coefficient for BSA are reported at different values of pH and phase concentrations. A new method is suggested for finding individual phase mass transfer coefficients, using the effect of pH on partition coefficient.