Feasibilities for silicon recovery from solar cells waste by treatment with nitric acid

被引：0
|
作者：
Sleiniute, Agne [1 ]
Urbelyte, Liucija [1 ]
Denafas, Julius [2 ]
Kosheleva, Arina [3 ]
Denafas, Gintaras [1 ]
机构：
[1] Kaunas Univ Technol, Fac Chem Technol, Dept Environm Technol, 19 Radvilenu Rd, LT-50524 Kaunas, Lithuania
[2] Kaunas Univ Technol, Inst Environm Engn, Off Resource Efficiency Management & Cleaner Prod, 50 Gedimino St, LT-44239 Kaunas, Lithuania
[3] Hamburg Univ Technol, Inst Environm Technol & Energy Econ, Res Grp Waste Resources Management, 40 Eissendorfer St, Hamburg, Germany
来源：
CHEMIJA | 2020年 / 31卷 / 03期
关键词：
solar cells waste; silicon; aluminum; silver; treatment by nitric acid; leaching efficiency; diffusion; SI MODULE RELIABILITY; METROLOGY;
D O I：
暂无
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
The feasibilities of silicon recovering from solar cell waste (SCW) by treatment with nitric acid at its concentrations of 1, 2, 3 and 4M were investigated. The research results have shown that complete leaching of aluminum from the silicon matrix is not possible. It can be explained by formation of aluminum compounds with oxygen and silicon on the aluminum particles. Total silver leaching is achieved at maximal 4M concentrations of nitric acid. The influence of nitric acid concentrations on the leaching efficiency of these metals is significantly reduced at higher temperatures (up to 50 degrees C). Higher metal leaching efficiency is characteristic of larger SCA particles under more favourable spatial conditions for penetration of nitric acid ions.
引用
收藏
页码：137 / 145
页数：9
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