Review on Hydrometallurgical Recovery of Metals with Deep Eutectic Solvents by Guillaume Zante & Maria Boltoeva

Author:Guillaume Zante & Maria Boltoeva
Format: pdf
Tags: Deep eutectic solvents (DESs) appeared recently as a new class of green designer solvents. The recovery of metals using hydrometallurgy is of major importance with the growth in metal demand. Several authors used these solvents for the hydrometallurgical recovery of metals from primary and secondary resources, and these studies are reviewed in the present work. Hydrophilic DESs can be used for the leaching of metals and have great potential to replace mineral acids, and even to reduce water consumption. Efficient and selective leaching of metals from minerals or wastes is feasible by using DESs. However, the kinetics of leaching as well as the physicochemical properties of DESs are still limiting their large-scale application. Electrochemical recovery from DES is also possible but deserves further investigation. Finally, the recovery of metals from aqueous solutions using hydrophobic DESs was studied in several works. For the solvent extraction of metals, hydrophobic DESs constitute credible alternative ionic liquids., deep eutectic solvents; low temperature transition mixtures; hydrometallurgy; solvent extraction; leaching; electrochemistry; metal extraction; metal recycling


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