Ion exchange kinetics: A comparison of models
β Scribed by Frederick A. Glaski; Joshua S. Dranoff
- Publisher
- American Institute of Chemical Engineers
- Year
- 1963
- Tongue
- English
- Weight
- 702 KB
- Volume
- 9
- Category
- Article
- ISSN
- 0001-1541
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π SIMILAR VOLUMES
Four cases of ion-exchange kinetics are pointed out in which premises of a mathematical model are incompatible with facets of physical reality. The cases are (1) calculation of nonlinear gradients in an unstirred Nernst "'film'" (2) shell-core models in the absence of a mechanism that can produce sh
A model for multispecies ion-exchange kinetics based on the Nernst-Planck equation is suggested. It is analyzed in comparison with the "locally-determinate" model described by Hwang and Helfferich [l]. The model makes possible simple computation. The conditions for the occurrence of unusual kinetic
A mathematical model to describe the protonatlon of weak acid Ion-exchange resms with various acids has been developed The charge profiles calculated usmg the theory are demonstrated by photographs Interdtiuslon coeficlents m the resm phase have been determmed and It 1s shown how they depend on the