| |
 |
UNIVERSITY OF BUCHAREST
FACULTY OF PHYSICS Guest
2024-11-22 2:15 |
 |
|
|
|
Conference: Bucharest University Faculty of Physics 2024 Meeting
Section: Physics and Technology of Renewable and Alternative Energy Sources
Title:
Optimized Electrochemical Protocol for Efficient Gold Recovery from Electronic Waste
Authors:
Cornelia DIAC (1), Matei-Tom IACOB (1,2), Bogdan Ciprian MITREA (1,2)
*
Affiliation:
1) 3NanoSAE Research Center, University of Bucharest, 077125 Bucharest – Romania
2) University of Bucharest, Faculty of Physics, 077125 Bucharest – Romania
E-mail
cornelia.diac@3nanosae.org
Keywords:
electrochemistry, gold recycling, PCB, circular economy
Abstract:
The escalating demand for precious metals and the environmental impact of traditional mining have necessitated the development of sustainable and efficient recovery methods. This study presents an optimized electrochemical protocol for the recovery of gold from printed circuit boards (PCBs) using cyclic voltammetry with a gold disk electrode. A series of electrolyte solutions containing chlorides, nitrates, and sulphates were evaluated to determine their efficacy in the gold recovery process. Subsequent variations in the concentration of hydrochloric acid (HCl) and adjustments to the operational temperature were conducted to refine the protocol. The optimal conditions were identified at a 1M HCl concentration with a temperature setting of approximately 40°C. These parameters facilitated a superior recovery rate, indicating a promising avenue for the recycling of gold from electronic waste. The findings suggest that the application of this refined electrochemical approach could significantly enhance the sustainability and economics of gold recycling from PCBs.
References:
[1] Rai, V.; Liu, D.; Xia, D.; Jayaraman, Y.; Gabriel, J.-C.P. Electrochemical Approaches for the Recovery of Metals from Electronic Waste: A Critical Review. Recycling 2021, 6, 53. https://doi.org/10.3390/recycling6030053
[2] Panda, R., Dinkar, O.S., Jha, M.K. et al. Recycling of gold from waste electronic components of devices. Korean J. Chem. Eng. 37, 111–119 (2020). https://doi.org/10.1007/s11814-019-0412-x
Acknowledgement:
The current work was supported by a grant of the Ministry of Research, Innovation and Digitization, CNCS - UEFISCDI, project number PN-III-P1-1.1-PD-2021-0510.
|
|
|
|