Selective recovery of zinc from goethite residue in the zinc industry using deep-eutectic solvents.

ABSTRACT: Several deep-eutectic solvents (DESs) were tested for the valorisation of goethite residue produced by the zinc industry. The objective of the work was to selectively recover zinc from the iron-rich matrix using deep-eutectic solvents as lixiviants. The effect of the type of hydrogen bond donor and hydrogen bond acceptor of the deep-eutectic solvent on the leaching efficiency was studied. Levulinic acid-choline chloride (x _ChCl = 0.33) (LevA-ChCl) could selectively leach zinc from the iron-rich matrix, and it was selected as the best-performing system to be used in further study. The leaching process was optimised in terms of temperature, contact time, liquid-to-solid ratio and water content of the deep-eutectic solvent. The role of the choline cation on the leaching proc

SUBMITTER: Rodriguez Rodriguez N 

PROVIDER: S-EPMC9049832 | biostudies-literature | 2020 Feb

REPOSITORIES: biostudies-literature