| Title | Silver recovery from silicon solar cells waste by hydrometallurgical and electrochemical technique |
|---|---|
| ID_Doc | 6834 |
| Authors | Russo, RE; Awais, M; Fattobene, M; Santoni, E; Cavallera, R; Zamponi, S; Conti, P; Berrettoni, M; Giuli, G |
| Title | Silver recovery from silicon solar cells waste by hydrometallurgical and electrochemical technique |
| Year | 2024 |
| Published | |
| Abstract | In this study, hydrometallurgical and electrochemical methods were combined to achieve an innovative strategy for the effective recovery of the finest silver metal from silicon solar waste. The waste was thoroughly characterized by X-Ray diffraction, Scanning Electron Microscopy, XRay Absorption Spectroscopy, and Inductively Coupled Plasma Optical Emission Spectroscopy. A chemometric approach based on experimental design was used to find the best conditions for the leaching process based on a combined base-activated persulfate and ammonia system while a novel method known as electrodeposition-redox replacement was used to recover it. A remarkable pure silver recovery of 98.7 +/- 1.4 % was achieved. Additionally, Scanning Electron Microscopy analysis confirmed the enrichment of Ag particles on the electrode. Overall, these promising results showed how flexible the electrodeposition-redox replacement approach is in producing a range of valuable functional materials from intricate hydrometallurgical solutions including multiple metal impurities. |
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