Sorption recovery of rhodium(III) from multicomponent chloride solutions in the presence of tin(II) chloride

The influence of tin (II) chloride additives on sorption of Rh(III) on the Purolite S920 ion exchange resin with isothiouronium groups, the Purolite S985 weak base anion exchange resin, and the Purolite A500 strong base anion exchange resin is investigated. It is established that the introduction of...

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Bibliographic Details
Published in:Russian journal of non-ferrous metals 2016-11, Vol.57 (7), p.681-685
Main Authors: Susoyeva, A. A., Blokhin, A. A., Murashkin, Yu. V., Mikhaylenko, M. A.
Format: Article
Language:English
Subjects:
Chemistry and Materials Science
Materials Science
Metallic Materials
Metallurgy of Rare and Noble Metals
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Summary:The influence of tin (II) chloride additives on sorption of Rh(III) on the Purolite S920 ion exchange resin with isothiouronium groups, the Purolite S985 weak base anion exchange resin, and the Purolite A500 strong base anion exchange resin is investigated. It is established that the introduction of SnCl 2 leads to a substantial increase in selectivity of all tested ion exchange resins to Rh(III) and in the sorption rate of Rh(III) on S985 and S920 ion exchange resins. The optimal dosage of SnCl 2 (0.01 mol/L) at which the distribution coefficients of Rh(III) during sorption for all tested ion exchange resins reach maximal values is determined. It is shown that almost quantitative recovery of Rh(III) is attained when passing the multicomponent chloride solution of the composition (g/L) 0.2 Rh(III), 72.9 HCl, 53.5 NH 4 Cl, 2.7 Al(III), 1.23 Fe(III) and 5.9 Sn(IV) with the SnCl 2 additive through the Purolite S920 ion exchange resin with isothiouronium groups. Desorption of Rh(III) from the Purolite S920 saturated ionite with the acidified thiourea solution is incomplete, no greater than 60%.
ISSN:1067-8212
1934-970X
DOI:10.3103/S1067821216070142