RT Journal Article T1 Membrane potentials and electrolyte permeation in a cation-exchange membrane A1 Barragán García, Vicenta María A1 Ruiz Bauzá, Carlos AB A method has been developed which permits one to determine the electrolyte permeation velocities and the membrane system permeability from measurements of the membrane potential as a function of time. The method has been applied to a cation-exchange membrane separating two aqueous KCl solutions, at the same pressure and temperature, but of different concentrations. The experiments have been carried out in two concentration ranges and at different solution stirring rates. The obtained results showed that the membrane system permeability depends notably on the stirring rate, this dependence being greater for the highest concentration range. The intrinsic permeability of the membrane was determined from considerations about the concentration polarization effect, its value being greater in the lower concentration range. PB Elsevier Science BV SN 0376-7388 YR 1999 FD 1999-03-17 LK https://hdl.handle.net/20.500.14352/58440 UL https://hdl.handle.net/20.500.14352/58440 LA eng NO © 1999 Elsevier Science B.V. DS Docta Complutense RD 7 abr 2025