Feasibility of electro-reduction of U(VI) in oxalic acid using an electrolytic CEM-separated cell
| Autor: | D.J. Van der Westhuizen, M. Potgieter, W.D. Van der Spoel Badenhorst, Henning M. Krieg |
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| Přispěvatelé: | 11087137 - Krieg, Henning Manfred, 12839981 - Van der Westhuizen, Derik Jacobus, 20463294 - Potgieter, Marcelle, 24250643 - Van der Spoel Badenhorst, Wouter D. |
| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
Stripping (chemistry)
Health Toxicology and Mutagenesis Oxalic acid electrolyte Oxalic acid Hydrazine Uranium reduction chemistry.chemical_element Disproportionation Electrolyte 010403 inorganic & nuclear chemistry 01 natural sciences Analytical Chemistry chemistry.chemical_compound Nitric acid Electrolytic stripping Radiology Nuclear Medicine and imaging Spectroscopy Public Health Environmental and Occupational Health Uranium Pollution 0104 chemical sciences Anode Cation exchange membrane Nuclear Energy and Engineering chemistry Nuclear chemistry |
| Popis: | The feasibility of electrolytic stripping of U(VI) using an electrolytic separation cell with anode and cathode compartments, separated by a cation exchange membrane (CEM), was investigated as a possible final step in a traditional solvent extraction process to recover uranium. The reduction mechanism of U(VI)–U(IV) in oxalic acid was compared with the well-known nitric acid and hydrazine mechanism. It was shown that a similar mechanism was followed in both electrolytes, forming a U(V) intermediate followed by disproportionation to U(IV) and U(VI). Measurable amounts of U(IV) were produced and the transfer of U(VI) through the CEM with simultaneous electro-reduction to U(IV) was confirmed. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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