Abstract
The uranium sorption by anion exchange resins from productive solutions prepared by carbonate leaching from peat ore was investigated. The uranium recovery from leach liquors decreased during long-time exploitation of ion exchangers due to contamination of resins with humic substances. The alkaline solution of sodium chloride can be used to efficiently regenerate of resins. The resin Purolite A660/4759 had the highest value of full dynamic exchange capacity, which was (36.62 ± 1.10) g U/L of wet settled resin. The desorption process was carried out by ammonium carbonate/bicarbonate mixture solutions with values of uranium recovery degree of (97.41 ± 2.53)%. The degree of uranium precipitation during crystallization of ammonium uranyl carbonate from pregnant solutions was 72%.
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