Processing of indium (III) solutions via ion exchange with Lewatit K-2621 resin
DOI:
https://doi.org/10.3989/revmetalm.010Keywords:
Hydrochloric acid, Indium(III), Ion exchange, Lewatit K-2621Abstract
The processing of indium(III)-hydrochloric acid solutions by the cationic ion exchange Lewatit K-2621 resin has been investigated. The influence of several variables such as the hydrochloric acid and metal concentrations in the aqueous solution and the variation of the amount of resin added has been studied. Moreover, a kinetic study performed in the uptake of indium(III) by Lewatit K-2621, shows that either the film-diffusion and the particle-diffusion models fit the ion exchange process onto the resin, depending upon the initial metal concentration in the aqueous solution. The loaded resin could be eluted by HCl solutions at 20 °C.
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