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The Study of the Kinetic Characteristics of Sorption of Scandium of Ion Exchanger Purolite MTS9580 from Return Circulating Solutions of Underground Leaching of Uranium Oresстатья
Информация о цитировании статьи получена из
Web of Science,
Scopus
Статья опубликована в журнале из списка Web of Science и/или Scopus
Дата последнего поиска статьи во внешних источниках: 7 октября 2020 г.
- Авторы: Yessimkanova U., Mataev M., Alekhina M., Kopbaeva M., Berezovskiy A., Dreisinger D.
- Журнал: Eurasian Chemico-Technological Journal
- Том: 22
- Год издания: 2020
- Издательство: Institute of New Chemical Technologies and Materials of Al-Farabi Kazakh State National University
- Местоположение издательства: Kazakhstan
- Первая страница: 135
- Последняя страница: 140
- Аннотация: This paper presents the results of a study of experiments on the sorption characteristicsof phosphorus-containing ion exchangers Purolite MTS9580 (functional group‒ derivatives of phosphonic acid) and Lewatit TP260 (functional group ‒aminomethylphosphonic acid) on scandium. Using the method of low-temperaturenitrogen adsorption, structural characteristics of selected ion exchangers PuroliteMTS9580 and Lewatit TP260 respectively were measured. The specific surface ofPurolite MTS9580 and Lewatit TP260 ion exchangers was measured as 5.1 and4.5 m 2 /g, respectively. The obtained values indicate the presence of a macroporousstructure in the ion exchangers. Experiments were carried out on the sorption ofscandium and critical impurities in a static mode and dynamic mode while varyingthe acidity of the initial mother liquor of the sorption of uranium. Comparison ofscandium sorption from pre-acidified uranium sorption mother liquor with LewatitTP260 and Purolite MTS9580 ion exchangers showed an advantage for MTS9580resin. The MTS9580 resin had an exchange capacity of 200 mg Sc/dm 3 versus59.7 mg Sc/dm 3 for TP260. The dynamic exchange capacity of Purolite MTS9580is much lower in relation to harmful impurities as Al, Fe, Ca, etc.
- Добавил в систему: Алехина Марина Борисовна