Version 1
: Received: 21 November 2023 / Approved: 21 November 2023 / Online: 21 November 2023 (14:24:23 CET)
How to cite:
Hyun Jong, K.; Urtnasan, E.; Wang, J. A Study on the Recovery of Valuable Metals from Solar Cells Using Acid Leaching and Substitution Reactions. Preprints2023, 2023111346. https://doi.org/10.20944/preprints202311.1346.v1
Hyun Jong, K.; Urtnasan, E.; Wang, J. A Study on the Recovery of Valuable Metals from Solar Cells Using Acid Leaching and Substitution Reactions. Preprints 2023, 2023111346. https://doi.org/10.20944/preprints202311.1346.v1
Hyun Jong, K.; Urtnasan, E.; Wang, J. A Study on the Recovery of Valuable Metals from Solar Cells Using Acid Leaching and Substitution Reactions. Preprints2023, 2023111346. https://doi.org/10.20944/preprints202311.1346.v1
APA Style
Hyun Jong, K., Urtnasan, E., & Wang, J. (2023). A Study on the Recovery of Valuable Metals from Solar Cells Using Acid Leaching and Substitution Reactions. Preprints. https://doi.org/10.20944/preprints202311.1346.v1
Chicago/Turabian Style
Hyun Jong, K., Erdenebold Urtnasan and Jei-Pil Wang. 2023 "A Study on the Recovery of Valuable Metals from Solar Cells Using Acid Leaching and Substitution Reactions" Preprints. https://doi.org/10.20944/preprints202311.1346.v1
Abstract
This study was conducted to recover valuable metals (silicon and silver) using acid leaching and substitution reactions with copper powder from the pulverized solar cell separated from the PV ribbon. Leaching experiments were conducted according to nitric acid concentration by molar solution as 1M, 2M, and 3M using an ultrasonic cleaner at a reaction temperature of 60 °C for the leaching times of 30 to 120 minutes. Si phases were detected at all leaching reaction times, it was confirmed that the aluminium was removed effectively if the nitric acid leaching time was more than 30 minutes, and silicon with a purity above 99% could be recovered. The silver was precipitated by adding copper, which has greater reducibility than Cu, Al, Si, Pb, and Sn. When the addition of copper powder was 0.75 and 1.0 g, precipitate was produced 0.23 and 0.55 g, respectively. The optimal condition for the recovery of silver by the addition of copper powder was 1 g, where is recovery rate reached 93.3%.
Keywords
solar cell; recovery; silicon; silver; leaching
Subject
Engineering, Metallurgy and Metallurgical Engineering
Copyright:
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
