Electro-Decontamination of Spent Ion Exchange Resins Contaminated with Iron Oxide Deposits under Dynamic Conditions

Eduard Tokar, Anna Matskevich and Andrei Egorin
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Eduard Tokar: Institute of Chemistry, Far Eastern Branch, Russian Academy of Sciences, Prospect 100-letiya Vladivostok, 159, 690022 Vladivostok, Russia
Anna Matskevich: Institute of Chemistry, Far Eastern Branch, Russian Academy of Sciences, Prospect 100-letiya Vladivostok, 159, 690022 Vladivostok, Russia
Andrei Egorin: Institute of Chemistry, Far Eastern Branch, Russian Academy of Sciences, Prospect 100-letiya Vladivostok, 159, 690022 Vladivostok, Russia

Sustainability, 2021, vol. 13, issue 9, 1-9

Abstract: A method for the electro-decontamination of spent ion exchange resin contaminated with hematite under dynamic conditions using sulfuric acid solutions has been suggested. It has been shown that decontamination under dynamic conditions excludes the secondary adsorption of radionuclides on ion-exchanger sites. The efficiency of this approach has been compared to that of control experiments without direct current treatment. A positive effect of the introduction of Fe2+ on the rate of dissolution of hematite has been demonstrated. This allows for decreasing the concentration of the sulfuric acid solution without decreasing the decontamination efficiency.

Keywords: ion-exchange resin; decontamination; direct-count; hematite (search for similar items in EconPapers)
JEL-codes: O13 Q Q0 Q2 Q3 Q5 Q56 (search for similar items in EconPapers)
Date: 2021
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