用硝酸处理太阳能电池废料回收硅的可行性

IF 0.5 4区化学 Q4 CHEMISTRY, MULTIDISCIPLINARY

Chemija Pub Date : 2020-07-19 DOI:10.6001/chemija.v31i3.4287

A. Šleiniūtė, Liucija Urbelytė, J. Denafas, A. Kosheleva, G. Denafas

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引用次数: 2

摘要

3德国汉堡工业大学环境技术与能源经济研究所“废物资源管理”研究小组研究了用浓度为1、2、3和4M的硝酸处理太阳能电池废料(SCW)回收硅的可行性。研究结果表明，铝不可能从硅基体中完全浸出。这可以用铝粒子上的氧和硅形成铝化合物来解释。总银浸出是在最大浓度为4M的硝酸下实现的。在较高温度下(高达50℃)，硝酸浓度对这些金属浸出效率的影响显著降低。在有利于硝酸离子渗透的空间条件下，较大的SCA颗粒具有较高的金属浸出效率。

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

3 Research Group ‘Waste Resources Management’, Institute of Environmental Technology and Energy Economics, Hamburg University of Technology, 40 Eissendorfer Street, Hamburg, Germany 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°C). Higher metal leaching efficiency is characteristic of larger SCA particles under more favourable spatial conditions for penetration of nitric acid ions.

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来源期刊

Chemija 化学-化学综合

CiteScore

1.30

自引率

16.70%

发文量

审稿时长

>12 weeks

期刊介绍： Chemija publishes original research articles and reviews from all branches of modern chemistry, including physical, inorganic, analytical, organic, polymer chemistry, electrochemistry, and multidisciplinary approaches.