MUTUAL INFLUENCE OF THE NA+ AND CS+ IONS DURING THEIR MASS ELECTROTRANSPORT THROUGH A PERFLUORINATED SULFOCATION MEMBRANE

0During sorption of the Na+ and Cs+ ions under equilibrium conditions in perfluorinated cation-exchange membranes from a mixture of 0.1 M Na Cl and 0.1 M CsCl solutions, it is the Cs+ ions that are predominantly sorbed Effective self-diffusion coefficients for the Na+ and Cs+ ions from individual solutions of 0.01-1.00 M concentrations and from the above equimolar mixture are found. Selectivity of the electrodialytic separation of the Cs+ ions from this mixture of electrolytes is define d by moisture content in membranes. The moisture content is controlled by the Na+ ion, which is more hydrated. The current mode ensuring an effective separation of mixtures of ions (at which the selectivity coe fficient is the largest) is found.