Sviridov A.V.

INDIUM EXTRACTION FROM SOLUTIONS WITH MODIFIED ALUMINOSILICATES

The aim of this work was to study the adsorption of indium from aqueous solutions on modified highly dispersed aluminosilicates for the recovery of indium from technological so-lutions. The adsorption isotherms of indium, iron and zinc from multi component solutions on modified by di(2-ethylhexyl) phosphoric acid montmorillonite were obtained. It was shown that adsorption processes can be reliably described by models of Langmuir and Freundlich (R2 = 0.96–0.99). The shape of the isotherms is determined both by the surface properties of the sorbent and forms of presence of metal ions in aqueous solutions. The highest value of Langmuir constant Kads = 422.65 for reagent "Metоsol" was obtained for ions of indium, which indicates the preferential affinity of the sorbing mineral to this element, since the cor-responding figures for the ions Fe2+ (1.09) and Zn2+ (0.78) are close to unity.

2016, Т. 59, № 7, Стр. 35-41
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