|
|||||
|
|
Ionic‐Liquid‐Based Acidic Aqueous Biphasic Systems for Simultaneous Leaching and Extraction of Metallic Ions |
|
| Authors: | Matthieu Gras Dr. Nicolas Papaiconomou Dr. Nicolas Schaeffer Dr. Eric Chainet Dr. Farouk Tedjar Prof. Joao A. P. Coutinho Dr. Isabelle Billard |
| Affiliation: | 1. Univ. Grenoble-Alpes, LEPMI, Grenoble, France;2. Univ. Savoie, LEPMI, Chambéry, France;3. CNRS, LEPMI, Grenoble, France;4. Current address: Université C?te d'Azur, CNRS, Institut de Chimie de Nice, Nice, France;5. CICECO, Dep of Chemistry, Univ. Aveiro, Aveiro, Portugal;6. Recupyl SAS, Domène, France |
| Abstract: | The first instance of an acidic aqueous biphasic system (AcABS) based on tributyltetradecyl phosphonium chloride ([P44414][Cl]) and an acid is here reported. This AcABS exhibits pronounced thermomorphic behavior and is shown to be applicable to the extraction of metal ions from concentrated acidic solutions. Metal ions such as cobalt(II), iron(III), platinum(IV) and nickel(II) are found to partition preferentially to one of the phases of the acidic aqueous biphasic system and it is here shown that it successfully allows the difficult separation of CoII from NiII, here studied at 24 and 50 °C. |
| Keywords: | hydrometallurgy ionic liquids metal recycling noble metals sustainable chemistry |