ID | 58012 |
FullText URL | |
Author |
Harada, Sho
Department of Material and Energy Science, Graduate School of Environmental and Life Science, Okayama University
Uddin, Md. Azhar
Department of Material and Energy Science, Graduate School of Environmental and Life Science, Okayama University
Kato, Yoshiei
Department of Material and Energy Science, Graduate School of Environmental and Life Science, Okayama University
ORCID
publons
Kawanishi, Takanori
Wet Process Division, Toho Kasei Co., Ltd
Hayashi, Yoshiaki
Wet Process Division, Toho Kasei Co., Ltd
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Abstract | There are few study examples on the separation of metals by floating method. In this study, separation of silicon and aluminum, which are the main components of silicon-based solar cell module, was carried out by floating method in order to purify silicon from waste solar cell module. The selection of surfactant, control of electric charge, wettability of the solid particles, surface tensions, and bubble surface area are important for separation of solids by floating method. Sodium dodecyl sulfate (SDS) can increase the hydrophobicity of aluminum powder due to the difference of surface potentials between silicon and aluminum. SDS behaves as a collector of aluminum as well as a frothing agent to decrease the bubble size. At a SDS concentration of 2 g/L and sample dipping time of 10 min, 80.1 mass% of aluminum was floated and separated, and the sedimentary silicon reached a purity of 90.7% from a mixture of 50 mass% aluminum and 50 mass% silicon. Finally, at a pH value of 7.0, SDS concentration between 1.0 and 2.5 g/L and air flow rate of 2.5 L/min (STP) were suitable experimental conditions to purify silicon from a mixture of silicon and aluminum by flotation separation method.
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Keywords | Flotation
Floating separation
Waste solar cell module
Silicon
Sodium dodecyl sulfate
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Note | This is a post-peer-review, pre-copyedit version of an article published in Journal of Sustainable Metallurgy. The final authenticated version is available online at: http://dx.doi.org/10.1007/s40831-019-00246-6.
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Published Date | 2019-09-23
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Publication Title |
Journal of Sustainable Metallurgy
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Volume | volume5
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Issue | issue4
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Publisher | Springer
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Start Page | 551
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End Page | 560
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ISSN | 2199-3823
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Content Type |
Journal Article
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language |
English
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OAI-PMH Set |
岡山大学
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File Version | author
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DOI | |
Web of Science KeyUT | |
Related Url | isVersionOf https://doi.org/10.1007/s40831-019-00246-6
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Citation | Harada, S., Uddin, M.A., Kato, Y. et al. Separation Between Silicon and Aluminum Powders Contained Within Pulverized Scraped Silicon-Based Waste Solar Cells by Flotation Method. J. Sustain. Metall. 5, 551–560 (2019). https://doi.org/10.1007/s40831-019-00246-6
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