Recovery of Silver and Gold From Electronic Waste by Electrodeposition in Ethaline Ionic Liquid

Popescu, Ana Maria; Soare, Vasile; Demidenko, Olga; Moreno, Jose M. Calderon; Neacsu, Elena Ionela; Donath, Cristina; Burada, Marian; Constantin, Ionut; Constantin, Virgil

Ana Maria Popescu, Vasile Soare, Olga Demidenko, Jose M. Calderon Moreno, Elena Ionela Neacsu, Cristina Donath, Marian Burada, Ionut Constantin, Virgil Constantin

Recovery of Silver and Gold From Electronic Waste by Electrodeposition in Ethaline Ionic Liquid

Abstract:

The recycling of metals from electronic equipment waste (e-waste) is of great concern today. The work described in the article focuses on the application of ionic liquids (ILs) to selectively recover of precious metals (Ag and Au) from the anodic slime obtained at the anodic dissolution of cast e-waste. The ingots obtained from molten and cast anodic slime were selectively dissolved in ILs. Silver and gold compositions of the ingots: 39.7 wt.% and respectively 18.9 wt.%. The IL used was an eutectic mixture of choline chloride with ethylene glycol in a 1:2 molar ratio. As catalytic/oxidizing agent, there was used pure iodine in a concentration of 0.1-0.2 moldm-3 at 298-303 K. Cyclic voltammetry was employed for the determination of the electrochemical windows of ILs as well as of the dissolution and electrodeposition potentials of principal metals present in the ingot (anode). For Ag and Au, the deposition potentials determined were 0.074 V and respectively 0.696 V. The XRD and SEM-EDX analyses revealed that the content of precious metals in the cathodic deposits was 99 wt.% for Ag and respectively ]70 wt.% for Au. We demonstrated that ILs electrolytes could be a solution to selective recovery of precious metals from e-waste.

Keywords:
Anodic dissolution; Au; Ag; ionic liquids; e-waste

Issue: 2020, Volume 71, Issue 1

Pages: 122-132

Publication date: 2020/2/7

https://doi.org/10.37358/RC.20.1.7822

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This article is published under the Creative Commons Attribution 4.0 International License

Citation Styles

Cite this article as:
POPESCU, A.M., SOARE, V., DEMIDENKO, O., MORENO, J.M.C., NEACSU, E.I., DONATH, C., BURADA, M., CONSTANTIN, I., CONSTANTIN, V., Recovery of Silver and Gold From Electronic Waste by Electrodeposition in Ethaline Ionic Liquid, Rev. Chim., 71(1), 2020, 122-132.

Vancouver
Popescu AM, Soare V, Demidenko O, Moreno JMC, Neacsu EI, Donath C, Burada M, Constantin I, Constantin V. Recovery of Silver and Gold From Electronic Waste by Electrodeposition in Ethaline Ionic Liquid. Rev. Chim.[internet]. 2020 Jan;71(1):122-132. Available from: https://doi.org/10.37358/RC.20.1.7822

APA 6th edition
Popescu, A.M., Soare, V., Demidenko, O., Moreno, J.M.C., Neacsu, E.I., Donath, C.,... Constantin, V. (2020). Recovery of Silver and Gold From Electronic Waste by Electrodeposition in Ethaline Ionic Liquid. Revista de Chimie, 71(1), 122-132. https://doi.org/10.37358/RC.20.1.7822

Harvard
Popescu, A.M., Soare, V., Demidenko, O., Moreno, J.M.C., Neacsu, E.I., Donath, C., Burada, M., Constantin, I., Constantin, V. (2020). 'Recovery of Silver and Gold From Electronic Waste by Electrodeposition in Ethaline Ionic Liquid', Revista de Chimie, 71(1), pp. 122-132. https://doi.org/10.37358/RC.20.1.7822

IEEE
A.M. Popescu, V. Soare, O. Demidenko, J.M.C. Moreno, E.I. Neacsu, C. Donath, M. Burada, I. Constantin, V. Constantin, "Recovery of Silver and Gold From Electronic Waste by Electrodeposition in Ethaline Ionic Liquid". Revista de Chimie, vol. 71, no. 1, pp. 122-132, 2020. [online]. https://doi.org/10.37358/RC.20.1.7822

Text
Ana Maria Popescu, Vasile Soare, Olga Demidenko, Jose M. Calderon Moreno, Elena Ionela Neacsu, Cristina Donath, Marian Burada, Ionut Constantin, Virgil Constantin,
Recovery of Silver and Gold From Electronic Waste by Electrodeposition in Ethaline Ionic Liquid,
Revista de Chimie,
Volume 71, Issue 1,
2020,
Pages 122-132,
ISSN 2668-8212,
https://doi.org/10.37358/RC.20.1.7822.
(https://revistadechimie.ro/Articles.asp?ID=7822)
Keywords: Anodic dissolution; Au; Ag; ionic liquids; e-waste

RIS
TY - JOUR
T1 - Recovery of Silver and Gold From Electronic Waste by Electrodeposition in Ethaline Ionic Liquid
A1 - Popescu, Ana Maria
A2 - Soare, Vasile
A3 - Demidenko, Olga
A4 - Moreno, Jose M. Calderon
A5 - Neacsu, Elena Ionela
A6 - Donath, Cristina
A7 - Burada, Marian
A8 - Constantin, Ionut
A9 - Constantin, Virgil
JF - Revista de Chimie
JO - Rev. Chim.
PB - Revista de Chimie SRL
SN - 2668-8212
Y1 - 2020
VL - 71
IS - 1
SP - 122
EP - 132
UR - https://doi.org/10.37358/RC.20.1.7822
KW - Anodic dissolution; Au; Ag; ionic liquids; e-waste
ER -

BibTex
@article{RevCh2020P122,
author = {Popescu Ana Maria and Soare Vasile and Demidenko Olga and Moreno Jose M. Calderon and Neacsu Elena Ionela and Donath Cristina and Burada Marian and Constantin Ionut and Constantin Virgil},
title = {Recovery of Silver and Gold From Electronic Waste by Electrodeposition in Ethaline Ionic Liquid},
journal = {Revista de Chimie},
volume = {71},
number = {1},
pages = {122-132},
year = {2020},
issn = {2668-8212},
doi = {https://doi.org/10.37358/RC.20.1.7822},
url = {https://revistadechimie.ro/Articles.asp?ID=7822}
}

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