ION EXCHANGE KINETICS A Nonlinear Diffusion Problem. Ⅱ. Particle Diffusion Controlled Exchange of Univalent and Bivalent Ions

摘要

he differential equation derived previously which describes the particle diffusion controlled ion exchange between spherical beads of uniform size and a well-stirred solution is solved numeri¬cally for the exchange of monovalent ions for bivalent ions, and of bivalent ions for monovalent ions. The approach is based on the Nernst-Planck equations of ionic motion. Numerical results for six different mobility ratios are presented and discussed.