KINETICS OF ION-EXCHANGE IN BINARY AND TERNARY-SYSTEMS USING STRONGLYACIDIC CATION-EXCHANGER .2. KINETIC-BEHAVIOR AND DIFFUSION-COEFFICIENTS IN TERNARY-SYSTEM

The three necked flask technique has been empolyed to study the kineti cs of ion exchange in ternary system of H+ - Na+ - UO22+. The kinetic curves have been obtained with changing the fraction of counter ions i n bulk solution, the rate of stirring, temperature and resin radius, T he particle diffusion coefficients in ternary system has been calculat ed by fitting the polar-coordination equation, and it has been found t hat they are of same order as. that of corresponding binary systems an d the sequence of them is <(D)over bar (H)> > <(D)over bar (Na)> > <(D )over bar (UO2)>. The selectivity coefficients are also reported, and the sequence of them is exactly opposite to that of particle diffusion coefficients.