1986 Volume 12 Issue 6 Pages 661-667
Piezodialysis concentration of aqueous ethanol solutions containing sucrose was carried out using four composite membranes and cellulose acetate (CA) membrane.
The concentration ratio of EtOH using CA membrane shows the largest value of 2.24.
The ethanol permeation flux is found to be proportional to the volume permeation flux of solution.
The concentration of ethanol inside the membrane was calculated and found larger than that of bulk solutions, assuming the mechanism of membrane flux can be expressed by Spiegler Kedem's transport model.
The distribution coefficients of EtOH in symmetrical CA membrane were measured and found to increase with addition of sucrose and with decrease of water content in membranes and was almost equal to the calculated value.
