Study of purification processes of soil contaminated with uranyl nitrate

• Main Authors: Mammadov, Kh.F., Shiraliyeva, H.N., Mehtiyev, E.I., Aliyeva-Jabbarly, U.S., Guliyev, E.I., Mirzayev, N.A., Huseynova, A.H.
• Format: Article
• Language: English
• Published: Національний науковий центр «Харківський фізико-технічний інститут» НАН України 2021
• Series: Вопросы атомной науки и техники
• Subjects: Application of nuclear methods
• Online Access: http://dspace.nbuv.gov.ua/handle/123456789/195123

The extraction of uranyl nitrate contaminated soil with weak solutions of nitric and hydrochloric acid, caustic sodium and subsequent washing of soil residues with distilled water leads to a more than tenfold decrease in the content of uranium isotopes (U²³⁸, U²³⁵, U²³⁴, and U²³⁶) in the soil. At the same time, there is a decrease in the content of natural radionuclides (Na²², K⁴⁰, Zn⁶⁵, Sn¹¹³, Sn¹²⁶) in the extracted soil samples. An increase in their content in the extract of the analyzed soil sample corresponds to a decrease in their content in the residue of the extracted soil sample. The combined extraction with weak solutions of these acids and alkalis leads to the enrichment of the soil with nitrates and chlorine-containing compounds of non-radioactive metals.