Recovery of metals from anodic dissolution slime of waste from electric and electronic equipment(WEEE) by extraction in ionic liquids

• Published in: Chemical research in Chinese universities Vol. 34; no. 1; pp. 113 - 118
• Main Authors: Popescu, Ana Maria, Yanushkevich, Kazimir, Soare, Vasile, Donath, Cristina, Neacsu, Elena Ionela, Constantin, Virgil
• Format: Journal Article
• Language: English
• Published: Changchun Jilin University and The Editorial Department of Chemical Research in Chinese Universities 01.02.2018; Springer Nature B.V
• Subjects: Analytical Chemistry; Anodic dissolution; Chemistry; Chemistry and Materials Science; Chemistry/Food Science; Choline; Copper base alloys; Deposits; Dissolution; Electrolysis; Electrolytes; Electronic equipment; Electronic waste; Ethylene glycol; Inorganic Chemistry; Iodine; Ionic liquids; Ions; Lead; Materials recovery; Organic Chemistry; Physical Chemistry; Slime; Tin; Waste from electric and electronic equipment(WEEE); Metals recovery; Ionic liquid
• ISSN: 1005-9040; 2210-3171
• DOI: 10.1007/s40242-017-7225-4

The recovery of metals from a multi-component alloy obtained by crushing, melting and anodic dissolu-tion of waste from electric and electronic equipment(WEEE) was investigated. The anodic dissolution of the alloy was carried out in an electrolysis cell with one copper cathode and a central cast anode, immersed in the electrolyte formed by choline chloride-ethylene glycol-iodine. The temperature of the electrolyte during the process was 343 K. Depending on the electrolysis parameters(current density and cell voltage), cathodic deposits of Sn, Pb and Zn of >99% purity were obtained. Cyclic voltammetry was used in order to determine the deposition potentials of the studied metals. The obtained metallic deposits were subject of determination of XRD, SEM/EDX and AFM in order to evidence the deposits structure and morphology. The experiments performed demonstrated the possibility of separating/selective recovery of metals from the multi-component alloy resulted from the waste from electrical and electronic equipment by anodic dissolution in ionic liquids.