Chemical Treatment of Copper and Aluminum Derived from Waste Crystalline Silicon Solar Cell Modules by Mixed Acids of HNO3 and HCl

Chemical Treatment of Copper and Aluminum Derived from Waste Crystalline Silicon Solar Cell Modules by Mixed Acids of HNO3 and HCl

In this study, copper (Cu) and aluminum (Al) particles derived from waste crystalline silicon solar cell modules were etched with mixed acid containing HNO 3 and HCl, and the optimal mixing conditions were examined for the purpose of recovering silicon with high yield. The crushed particles of waste...

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Veröffentlicht in:Journal of sustainable metallurgy 2018-09, Vol.4 (3), p.378-387
Hauptverfasser: Matsubara, Teruaki, Uddin, Md. Azhar, Kato, Yoshiei, Kawanishi, Takanori, Hayashi, Yoshiaki
Format: Artikel
Sprache:eng
Schlagworte:
Aluminum
Chemical treatment
Complex formation
Copper
Copper chloride
Crystal structure
Crystallinity
Earth and Environmental Science
Environment
Etching
Metallic Materials
Modules
Organic chemistry
Photovoltaic cells
Research Article
Silicon
Silicon wafers
Solar cells
Sustainable Development
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Zusammenfassung:In this study, copper (Cu) and aluminum (Al) particles derived from waste crystalline silicon solar cell modules were etched with mixed acid containing HNO 3 and HCl, and the optimal mixing conditions were examined for the purpose of recovering silicon with high yield. The crushed particles of waste silicon solar cells were used after sieving between 450 and 600 μm particle size. The Cu etching rate decreased with the increasing HCl concentration in the region of HNO 3 /HCl ≧ 3.36, whereas it increased at HNO 3 /HCl 
ISSN:2199-3823
2199-3831
DOI:10.1007/s40831-018-0184-2