ПРИБЛИЖЁННОЕ ТОЛКОВАНИЕ КРИВЫХ ПРОСКОКА ДВУХКОМПОНЕНТНОГО ИОННОГО ОБМЕНА НА ЦЕОЛИТАХ 2. Približënnoe tolkovanie krivyh proskoka dvyhkomponentnogo ionnogo obmena na ceolitah 2

Abstract

The ion excvhange of NH4+ Cs+ on zeolite exchangers was investigated experimentally. A model which includes filmdiffusion and micropore-diffusion as transport processes was used to predict the breakthrough curves. The model is based on the assumptions that constant pattern is reached and was solved by analytic and numerical methods. A test of the modelling procedure has been made by comparing with results on a binary exchange system, for which the values of the equilibrium constants, the diffusivities and other physico-chemical characteristics already had been determined. The analytic and moreover the numerical solution was in good agreement with the experimental data for the breakthrough curves of NH4+ Cs+ ion exchange in fixed beds.