Abstract
The program “Countercurrent” is developed for the simulation of a continuous ionexchange extraction of strontium from strongly mineralized NaCl and CaCl2 solutions using a KB-4 carboxylic cation-exchanger in the countercurrent columns. The program allows one to calculate the conditions of Ca and Sr separation depending on the mode of operation at the sorption and regeneration stages, the residual Sr content on the overloaded sorbent, and the Sr separation on incompletely regenerated KB-4. It also makes it possible to find the optimal separation conditions. The program “Countercurrent” can be also used to simulate other ion-exchange processes.
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