Please use this identifier to cite or link to this item: https://hdl.handle.net/20.500.13091/1404
Title: Processing of anode slime with deep eutectic solvents as a green leachant
Authors: Topçu, Mehmet Ali
Kalem, Volkan
Rüşen, Aydın
Keywords: Waste Disposal
Metal Recovery
Deep Eutectic Solvents
Hydrometallurgy
Arc Furnace Dust
Choline Chloride
Selective Recovery
Ionic Liquids
Zinc-Oxide
Copper
Optimization
Dissolution
Electrodeposition
Cu
Issue Date: 2021
Publisher: ELSEVIER
Abstract: This paper describes an efficient process of recovering valuable metals from a copper anode slime sample using green chemicals such as choline chloride (ChCl) based deep eutectic solvents (DESs). The leaching agents include ChCl-urea, ChCl-ethylene glycol, ChCl-urea-ethylene glycol and ChCl/urea-deionized water in a 1:2, 1:2, 1:0.5:1.5, and 1:1 ratio, respectively. Prior to leaching experiments, chemical and mineralogical characterization of copper anode slime was performed. Considerable amount of precious metals was detected in the copper anode slime by chemical analysis. The main phases of copper anode slime detected by XRD and SEM/EDX analysis were namely Cu2O, SnO2, and, PbSO4. After leaching experiments, 97% of copper was recovered from the copper anode slime using ChCl-urea under an optimum condition at 95 degrees C of reaction temperature, 4 h reaction duration and, 1/25 g/mL solid/liquid ratio. The results showed that 91% of silver was extracted from the anode slime under the optimum condition with ChCl-urea DES composition, 95 degrees C reaction temperature, 48 h reaction duration, and 1/10 solid/liquid ratio. Gold was not leachable in the experiment using ChCl based DES with hydrogen bonding reagents such as urea and ethylene glycol. Moreover, the results revealed that PbSO4 was very soluble in DES prepared by ChCl and urea.
URI: https://doi.org/10.1016/j.hydromet.2021.105732
https://hdl.handle.net/20.500.13091/1404
ISSN: 0304-386X
1879-1158
Appears in Collections:Mimarlık ve Tasarım Fakültesi Koleksiyonu
Scopus İndeksli Yayınlar Koleksiyonu / Scopus Indexed Publications Collections
WoS İndeksli Yayınlar Koleksiyonu / WoS Indexed Publications Collections

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