Removal of 99Tc from low level radioactive liquid waste using di-tert-butyldibenzo-18-crown-6 impregnated sorbent
| Autor: | D. A. Thakur, J. N. Sharma, N.L. Sonar, T.P. Valsala |
|---|---|
| Rok vydání: | 2021 |
| Předmět: |
chemistry.chemical_classification
Sorbent Period (periodic table) Salt content Health Toxicology and Mutagenesis 18-Crown-6 Radiochemistry Public Health Environmental and Occupational Health Radioactive waste Salt (chemistry) Liquid waste 010403 inorganic & nuclear chemistry 01 natural sciences Pollution 0104 chemical sciences Analytical Chemistry chemistry.chemical_compound Nuclear Energy and Engineering chemistry Radiology Nuclear Medicine and imaging Spectroscopy Crown ether |
| Zdroj: | Journal of Radioanalytical and Nuclear Chemistry. 328:113-119 |
| ISSN: | 1588-2780 0236-5731 |
| Popis: | Low level radioactive liquid waste (LLW) is generated at different stages of operation of reprocessing as well as radioactive waste management. The LLW generated here is alkaline with high salt content. It contains different radioisotopes namely106Ru, 125Sb, 99Tc, 137Cs, 90Sr and traces of Pu. Presence of 99Tc in LLW is of great environmental concern due to its long half-life (T1/2: 2 × 105 years) and mobility. Hence it needs to be separated from LLW to maximum possible extent prior to discharge to environment. In this paper, study carried out for separation of 99Tc using the crown ether, Di-tert-Butyldibenzo-18-Crown-6 (DtBuDB18C6). The performance of the composite material was evaluated with respect to 99Tc uptake and the effect of various parameters like pH, salt concentration, time period and temperature on Kd value was studied. |
| Databáze: | OpenAIRE |
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