Version 1
: Received: 23 September 2024 / Approved: 23 September 2024 / Online: 24 September 2024 (09:23:07 CEST)
How to cite:
Mwase, J. M.; Wahl, S.; Meyer, S.; Yilmaz, D. Efficient Recovery of Silver and Aluminum from End-of-Life Photovoltaics: A Two-Step Leaching Approach. Preprints2024, 2024091825. https://doi.org/10.20944/preprints202409.1825.v1
Mwase, J. M.; Wahl, S.; Meyer, S.; Yilmaz, D. Efficient Recovery of Silver and Aluminum from End-of-Life Photovoltaics: A Two-Step Leaching Approach. Preprints 2024, 2024091825. https://doi.org/10.20944/preprints202409.1825.v1
Mwase, J. M.; Wahl, S.; Meyer, S.; Yilmaz, D. Efficient Recovery of Silver and Aluminum from End-of-Life Photovoltaics: A Two-Step Leaching Approach. Preprints2024, 2024091825. https://doi.org/10.20944/preprints202409.1825.v1
APA Style
Mwase, J. M., Wahl, S., Meyer, S., & Yilmaz, D. (2024). Efficient Recovery of Silver and Aluminum from End-of-Life Photovoltaics: A Two-Step Leaching Approach. Preprints. https://doi.org/10.20944/preprints202409.1825.v1
Chicago/Turabian Style
Mwase, J. M., Sylke Meyer and Duygu Yilmaz. 2024 "Efficient Recovery of Silver and Aluminum from End-of-Life Photovoltaics: A Two-Step Leaching Approach" Preprints. https://doi.org/10.20944/preprints202409.1825.v1
Abstract
Recycling solar panels is crucial to mitigating the environmental impact of the growing volume of end-of-life photovoltaic waste and conserving valuable resources, while achieving high purity in recovered materials ensures their effective reuse in the manufacturing of new solar panels, con-tributing to a sustainable and circular economy. This study proposes a two-step leaching process to recover Ag and Al from the silicon fraction of EoL photovoltaics (PVs). In the first stage laboratory scale tests, 99% Al was extracted using 5% HCl at room temperature for 3 hrs. The Al was precip-itated as oxide from the solution. The silicon residue was then leached with 0.5 M HNO3 at 80°C for 2 hrs extracting 99% Ag and producing Si with 99.83% purity. The silver was precipitated to produce metallic Ag with >99.9% purity. Methods to mitigate the effluent solutions were recom-mended and the entire process was presented in a flowsheet.
Keywords
Recycling; solar panels; silver; aluminum; lead; leaching; recovery
Subject
Chemistry and Materials Science, Metals, Alloys and Metallurgy
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.
