Selective extraction of metals using ionic liquids for nickel metal hydride battery recycling KU Leuven
A new separation scheme for the recycling of metal values from nickel metal hydride batteries utilizing ionic liquids has been developed. The scheme has been optimized for synthetic solutions and uses either the ionic liquid trihexyl(tetradecyl)phosphonium chloride (Cyphos IL 101) or tricaprylmethylammonium chloride (Aliquat 336). In the first stage of extraction cobalt, manganese, iron and zinc are removed from the rare earths and nickel in a ...