Abstract
The Hanford site, near Richland, WA, in the U.S.A., has more than 55 million gallons of high-level nuclear waste, much of which is high-ionic strength sodium and potassium containing electrolyte solutions. Spherical-resorcinol formaldehyde ion exchange resin is being developed to remove radioactive cesium from the waste. This study develops a model in the Rothmund–Kornfeld framework to predict Cs+–K+–Na+ selectivity on the resin. The model is found to fit the available data well, with an R 2 of greater than 0.985. The Rothmund–Kornfeld model is thus recommended for use in modelling ternary ion-exchange in Hanford waste.
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