Abstract
Sorption of rhenium (VII) and vanadium (V) with FIBAN series fibrous ionites out of mineralized sulfuric-chloride solutions has been studied. Equilibrium, kinetic, and dynamic characteristics of rhenium and vanadium sorption with AK-22 grade FIBAN ionite that contains the following functional groups: =NH, –NH2, –СOOH, and ≡N are obtained. The maximum capacity of this ionite for vanadium (V) is found to be observed at pH = 4 value. Rhenium and vanadium sorption isotherms are linear and described by Henry’s equations with constants KH = 113±2 ml/g (R2 = 0,995) and 674±6 ml/g (R2 = 0,999) respectively. Integral kinetic curves of sorption are obtained under the conditions of limited solution volume. The effective diffusion coefficients of rhenium and vanadium (9,0·10–13 and 7,5·10–15 m2/s respectively) are calculated with taking the half-transformation time into account. The feasibility of rhenium and vanadium separation under the dynamic conditions is shown.
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Schedule a callMore From: Izvestiya Vuzov. Tsvetnaya Metallurgiya (Proceedings of Higher Schools. Nonferrous Metallurgy)
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