| Issue |
E3S Web Conf.
Volume 417, 2023
III International Conference on Geotechnology, Mining and Rational Use of Natural Resources (GEOTECH-2023)
|
|
|---|---|---|
| Article Number | 02020 | |
| Number of page(s) | 10 | |
| Section | Geoecology, Geochemistry and Rational Use of Natural Resources, Environmental Protection | |
| DOI | https://doi.org/10.1051/e3sconf/202341702020 | |
| Published online | 21 August 2023 | |
Simultaneous ion-exchange sorption of uranium with concomitant impurities
1 Navoi Mining Metallurgical Combinate, Navoi street 27, 210100, Navoi, Uzbekistan
2 Navoi State University of Mining Technology, Street Galaba 76B, Navoi, 210100, Uzbekistan
3 Uzbek-Japan Innovation Center of Youth, University Street, 2B, Tashkent, 100174, Uzbekistan
4 National University of Uzbekistan, University Street 4, Tashkent, 100174, Uzbekistan
5 Tashkent Chemical-Technological Institute, Navoi street 32, Tashkent, 100011, Uzbekistan
* Corresponding author: zuhra_kadirova@yahoo.com
The aim of the study is to elucidate the effect of simultaneous sorption of uranium with different concomitant impurities that are contained in underground leaching solutions (sulfates, chlorides, nitrates, phosphates, silicates, iron, aluminum, and manganese) at pH = 1.2. Different sorption isotherms are studied for the uranium sorption by the strongly basic anion-exchange resin (BO020): (i) uranium and a number of concomitant impurities; (ii) uranium in the presence of the studied impurities. The negative effect of impurities is manifested at low uranium concentrations. With an increase in uranium concentration, the depressing effect of impurities (Al, Fe, Mn) becomes less. The most negative effect is exerted by nitrates in the amount of 0.4 g/L, silicates - 0.3 and 1 g/L, chloride -1 g/L. The phosphorus contributes to better sorption of uranium in the low concentration range of 0.02 to 0.200 g/L but becomes a depressant at higher concentrations.
© The Authors, published by EDP Sciences, 2023
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