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UNIVERSITY OF BUCHAREST
FACULTY OF PHYSICS Guest
2024-11-23 18:35 |
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Conference: Bucharest University Faculty of Physics 2023 Meeting
Section: Physics and Technology of Renewable and Alternative Energy Sources
Title:
Gold Dissolution In Electrochemical Systems: Exploring Eco-Friendly Methods For Sustainable Applications
Authors:
Cornelia DIAC(1), Tom Matei IACOB(1,2), Bogdan Ciprian MITREA(1,2), Adriana BĂLAN(1), Ioan STAMATIN(1), Serban STAMATIN(1)
*
Affiliation:
1) 3Nano-SAE Research Center, University of Bucharest, 077125 Bucharest – Romania
2) Faculty of Physics - University of Bucharest, 077125 Bucharest – Romania
E-mail
cornelia.diac@3nanosae.org
Keywords:
recovery, electrochemistry, gold dissolution, circular economy
Abstract:
Gold is a highly valued precious metal that finds extensive use in various applications such as electronic devices, jewelry and currency reserves. This is primarily due to its exceptional chemical resistance, stability at high temperatures and reliable electrical properties.y. However, the available resources of gold are gradually diminishing. In order to meet future demands and preserve these finite resources, it becomes imperative to recycle gold-containing materials, such as electronic scraps and used equipment. By employing these spent materials, we can both satisfy the growing demand for gold and conserve the Earth's scarce resources. Various methods are available for the recovery and recycling of gold. These methods include mechanical separation, pyrometallurgical and hydrometallurgical which have been extensively used to extract gold from gold-containing materials. However, these methods pose environmental challenges due to emissions of gases and concerns over the stable supply of metal-rich ores suitable for smelting in the future. In recent years, there has been a shift towards more environmentally friendly and sustainable methods, including electrochemical processes. These approaches aim to minimize the environmental impact associated with traditional methods and ensure a stable supply of gold while conserving resources. The electrochemical dissolution of gold is a complex subject that has been the focus of study for over five decades [1,2]. Despite significant research efforts, our understanding of this process remains somewhat limited. By enhancing our understanding of gold dissolution, we can unlock new possibilities for optimizing gold recovery processes and developing more efficient and sustainable electrochemical technologies. In this work, we will focus on the electrochemical oxidation and dissolution of gold which hold significant importance in the field of electrochemistry. Understanding the mechanisms behind this phenomena is crucial for comprehending the behavior of noble metals in electrochemical systems.
References:
[1] Cherevko, Serhiy & Zeradjanin, Aleksandar & Keeley, Gareth & Mayrhofer, Karl. (2014). A Comparative Study on Gold and Platinum Dissolution in Acidic and Alkaline Media. Journal of The Electrochemical Society. 161. H822-H830. 10.1149/2.0881412jes.
[2] DIAC, C., MAXIM, F. I., TIRCA, R., CIOCANEA, A., FILIP, V., VASILE, E., & STAMATIN, S. N., Electrochemical recycling of platinum group metals from spent catalytic converters, Metals, 2020, Vol 10, No 6, 822 p.
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 and TE 205/2021.
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