Abstract

Copper(II) extraction with 1-“[2-(2,4-dichlorophenyl)-4-propyl-1,3-dioxolan-2-yl]-methyl”-1H-1,2,4-triazole in toluene from hydrochloric acid solutions is studied. It is shown that copper(II) is most efficiently extracted with this reagent from 3–5 M HCl solutions. For aqueous acidity of 3 mol/L HCl, the extraction is an exothermal process and follows the coordination mechanism. The anion-exchange extraction mechanism predominates where HCl concentrations is greater than 6 mol/L. The studied reagent can be used for the selective separation of copper(II) from nickel(II) and cobalt(II) at aqueous acidities of up to 4 mol/L HCl.

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