Studies on the partitioning of actinides from high level liquid waste solution employing supported liquid membrane with Cyanex-923 as carrier
| Autor: | P.M. Gandhi, S. C. Tripathi, Nilesh L. Dudwadkar |
|---|---|
| Rok vydání: | 2012 |
| Předmět: |
inorganic chemicals
Formic acid Health Toxicology and Mutagenesis Hydrazine Inorganic chemistry Public Health Environmental and Occupational Health chemistry.chemical_element Americium Actinide PUREX Uranium Pollution Analytical Chemistry chemistry.chemical_compound Membrane Nuclear Energy and Engineering chemistry Nitric acid Radiology Nuclear Medicine and imaging Spectroscopy |
| Zdroj: | Journal of Radioanalytical and Nuclear Chemistry. 295:1009-1014 |
| ISSN: | 1588-2780 0236-5731 |
| DOI: | 10.1007/s10967-012-1869-9 |
| Popis: | The present paper deals with the studies on the partitioning of actinides from high level liquid waste solution of PUREX origin employing supported liquid membrane technique. The process uses solution of Cyanex-923 in n-dodecane as a carrier with poly tetra fluoro ethylene support and a mixture of citric acid, formic acid and hydrazine hydrate as a receiving phase. Transport studies are carried out for 241Am under different experimental conditions to optimize the transport parameters such as feed acidity, carrier concentration, effect of uranium, trivalent metal ion and salt concentration in the feed. Studies indicated good transport of actinides across the membrane from nitric acid medium. Under the optimized conditions the transport of 241Am is studied from a uranium depleted synthetic PHWR-HLLW and finally the technique has been used for the partitioning of alpha emitters from an actual research reactor-HLLW. High concentration of uranium in the feed is found to retard the transport of americium, suggesting the need for prior removal of uranium from the waste. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Full text from SpringerLink