Abstract
Sorption of rhenium(VII) and vanadium(V) from mineralized sulfate-chloride solutions by fibrous ionites of the FIBAN series is investigated. Equilibrium, kinetic, and dynamic characteristics of sorption of Re and V by the FIBAN ionite of the AK-22 brand, which contains functional groups =NH2, -NH2, -COOH, and ≡N, are found. It is established that the maximal capacity of this reagent in regards to vanadium(V) is observed at pH = 4. Sorption isotherms of Re and V are linear, being described by the Henry equation with constants K H = 1.36 ± 0.30 dm3/g (R 2 = 0.995) and 674 ± 21 cm3/g (R 2 = 0.999), respectively. Integral sorption kinetic curves are found under conditions of a limited solution volume, and effective diffusion coefficients of Re and V, which constituted 9.0 × 10−13 and 7.5 × 10−15 m2/s, respectively, are calculated allowing for the half-transformation time. The possibility of separating these metals in dynamic conditions is shown.
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Original Russian Text © Nway Shwan Oo, I.D. Troshkina, Aye Min, A.V. Shilyaev, 2014, published in Izvestiya VUZ. Tsvetnaya Metallurgiya, 2014, No. 2, pp. 42–47.
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Oo, N.S., Troshkina, I.D., Min, A. et al. Sorption of rhenium and vanadium from mineralized solutions by fibrous ionites. Russ. J. Non-ferrous Metals 55, 242–246 (2014). https://doi.org/10.3103/S1067821214030134
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DOI: https://doi.org/10.3103/S1067821214030134