Adsorption of Uranium From Carbonate Media
| Autor: | J. H. Canterford, G. J. Sparrow |
|---|---|
| Rok vydání: | 1984 |
| Předmět: |
Ion exchange
Chemistry Mechanical Engineering Inorganic chemistry Metals and Alloys chemistry.chemical_element General Chemistry Uranium Geotechnical Engineering and Engineering Geology Uranyl chemistry.chemical_compound Adsorption Control and Systems Engineering Bentonite Materials Chemistry Slurry Carbonate Leaching (metallurgy) Nuclear chemistry |
| Zdroj: | Mining, Metallurgy & Exploration. 1:241-246 |
| ISSN: | 2524-3470 2524-3462 |
| DOI: | 10.1007/bf03402585 |
| Popis: | The adsorption of uranium onto Wyoming bentonite was measured in carbonate media over the range pH 8-11. Uranium was removed from solution onto the solids by a rapid reaction, proposed to be adsorption of the anionic uranyl tricarbonato complex onto edges of the clay platelets, and a slow reaction which may be precipitation of a hydroxide. The changes in uranium content of the aqueous and solid phases of a uranium ore carbonate leach slurry were also measured as the slurry was progressively diluted. There was an increase in the uranium content of the solids as the pH of the suspension was lowered, as was observed with the Wyoming bentonite. The results indicate the conditions that should be met with respect to pH control in order to prevent the problem of excessive uranium adsorption in the counter-current decantation washing circuit of a conventional leaching process, as well as in the leaching and restoration phases of carbonate solution mining. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Full text from SpringerLink