Uranium sorption from productive solutions prepared by carbonate leaching from peat ore

Autor:	S. Yu. Skripchenko, Vladimir Rychkov, S. M. Titova, A. L. Smirnov
Rok vydání:	2019
Předmět:	Ammonium carbonate Ion exchange Health Toxicology and Mutagenesis Public Health Environmental and Occupational Health chemistry.chemical_element Sorption Ammonium uranyl carbonate Uranium 010403 inorganic & nuclear chemistry 01 natural sciences Pollution 0104 chemical sciences Analytical Chemistry chemistry.chemical_compound Nuclear Energy and Engineering chemistry Desorption Carbonate Radiology Nuclear Medicine and imaging Leaching (metallurgy) Spectroscopy Nuclear chemistry
Zdroj:	Journal of Radioanalytical and Nuclear Chemistry. 322:1825-1832
ISSN:	1588-2780 0236-5731
DOI:	10.1007/s10967-019-06751-y
Popis:	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%.
Databáze:	OpenAIRE
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