Zirconium and Hafnium Separation, Part 2. Solid/Liquid Extraction in Hydrochloric Acid Aqueous Solution with Anion Exchange Resins
| Autor: | Marc Lemaire, Alain Favre-Réguillon, L. Poriel, V. Lamotte, Stéphane Pellet-Rostaing |
|---|---|
| Rok vydání: | 2006 |
| Předmět: |
Zirconium
Aqueous solution Ion exchange Process Chemistry and Technology General Chemical Engineering Metal ions in aqueous solution Inorganic chemistry technology industry and agriculture chemistry.chemical_element Filtration and Separation Sorption Hydrochloric acid General Chemistry chemistry.chemical_compound chemistry Desorption Pyridine |
| Zdroj: | Separation Science and Technology. 41:2711-2722 |
| ISSN: | 1520-5754 0149-6395 |
| DOI: | 10.1080/01496390600725711 |
| Popis: | Sorption behavior of zirconium and hafnium on different commercial anion exchange resins with different amine functions; ammonium (Amberjet 4200Cl), pyridine (PVP) and pyridinium (HPQ) was investigated in hydrochloric acid by both batch and column methods. Experiments were studied as a function of the concentration of hydrochloric acid. For all resins, zirconium was preferably extracted. The highest separation factors at equilibrium conditions were obtained by poly(vinyl‐pyridine) (PVP) with a hydrochloric acid concentration of 9.5 M. It was observed that a single contact of the loaded resins with pure water completely back extracted the metal ions from the resins. On the basis of the significant difference between distribution coefficients of Zr and Hf, the separation was performed on a glass column (25×160 mm), packed with the resin. The breakthrough curves showed a competitive sorption and desorption process between Zr and Hf for the three resins studied. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|