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

被引:0
作者
A. A. Susoyeva
A. A. Blokhin
Yu. V. Murashkin
M. A. Mikhaylenko
机构
[1] St. Petersburg State Technological Institute (Technical University),
[2] Representative Office of Purolite Ltd. in Russia,undefined
来源
Russian Journal of Non-Ferrous Metals | 2016年 / 57卷
关键词
Rh(III); tin(II) chloride; solutions; recovery; sorption; desorption; ion exchange resins; selectivity; kinetics;
D O I
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中图分类号
学科分类号
摘要
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 SnCl2 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 SnCl2 (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 NH4Cl, 2.7 Al(III), 1.23 Fe(III) and 5.9 Sn(IV) with the SnCl2 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%.
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页码:681 / 685
页数:4
相关论文
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