Инд. авторы:	Gaskova O.L., Isupov V.P., Vladimirov A.G., Shvartsev S.L., Kolpakova M.N.
Заглавие:	Thermodynamic modeling of the behavior of Uranium and Arsenic in mineralized Shaazgai-Nuur Lake (Northwest Mongolia)
Библ. ссылка:	Gaskova O.L., Isupov V.P., Vladimirov A.G., Shvartsev S.L., Kolpakova M.N. Thermodynamic modeling of the behavior of Uranium and Arsenic in mineralized Shaazgai-Nuur Lake (Northwest Mongolia) // Doklady Earth Sciences. - 2015. - Vol.465. - Iss. 1. - P.1159-1163. - ISSN 1028-334X. - EISSN 1531-8354.
Внешние системы:	DOI: 10.1134/S1028334X15110094; РИНЦ: 26802868; SCOPUS: 2-s2.0-84951100048; WoS: 000367273100012;
Реферат:	eng: Highly mineralized closed lakes on the territory of ore regions of Mongolia are of special interest in relation to the search for nonconventional sources of metals. Water of soda Shaazgai-Nuur Lake contains similar to 1 mg/L U, and the content of the undesirable admixture of As is up to 300 mu g/L. Uranium and Arsenic speciation in solution and in the bottom sediments of the lake was estimated using thermodynamic modeling, and a method of their separation was suggested. Calculation of the models of sorption of these elements by goethite and calcite showed that at pH 9.4 typical of natural water it could be effective only at a high concentration of FeOOH sorbent. In this case, at pH < 5 and > 8 (the area of U sorption), As may be removed by simple filtering of solutions from the suspension upon additional coagulation.
Ключевые слова:	SORPTION; ADSORPTION; SURFACE COMPLEXATION;
Издано:	2015
Физ. характеристика:	с.1159-1163