Cation Transport Numbers in Polycarbonate Microporous Membranes. Effect of Unstirred Diffusion Layers

In this paper we obtain the apparent transport numbers across different polycarbonate microporous membranes bathed by two isothermal aqueous solutions of the same electrolyte but at different concentrations, N 1 and N 2. The effect of unstirred layers adjacent to the membrane is taken into account Six different membranes and two electrolytes (LiCl and MgCl2) were studied at 20, 30, 40, and 50[ddot]C and for N 1 and N 2 in the range 10−1 to 2 × 10−4 equiv/L.