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| Experimental Study on Silver Recovery from Waste Solar Panels |
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Received:September 14, 2021
Revised:September 24, 2021
Accepted:September 27, 2021
Published Online:January 18, 2022
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| DOI：doi：10.3969/j.issn.1007-7545.2022.02.008 |
| KeyWord:waste solar panels; single factor experiment; orthogonal experiment; extraction; silver |
| Author | Institution |
| HUANG Qing |
上海第二工业大学资源与环境工程学院 |
| DENG Yi |
生态环境部固体废物与化学品管理技术中心 |
| YU Feng-shan |
中国石油大学（北京）新能源与材料学院; 江西省汉氏贵金属有限公司 |
| ZHU Xin-jie |
上海外高桥保税区环保服务有限公司 |
| ZHANG Chenglong |
上海第二工业大学资源与环境工程学院; |
| YUAN Wen-yi |
上海第二工业大学资源与环境工程学院 |
| GU Wei-hua |
上海第二工业大学资源与环境工程学院 |
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| Abstract: |
| The vigorous development of photovoltaic power stations is accompanied by generation of a large number of waste solar panels. It is urgent to develop environmentally efficient technologies to solve the problems brought by waste solar panels. Pretreatment technology of waste solar panels and loss caused by it were discussed, and then the factors affecting efficient extraction of silver from waste solar panels and their impact were optimized by orthogonal experiment. The results indicate that both manual disassembly and heat treatment will cause weight loss of waste solar panels, and the more thorough the disassembly, the greater the loss. Silver leaching rate is 97.85 % with RSD of 2.16% under the optimum conditions for silver extraction from waste solar panels including mesylate concentration of 40%, hydrogen peroxide concentration of 20%, reaction time of 2.5 h, and reaction temperature of 70 ℃. The influence sequence of each factor on silver leaching rate is mesylate concentration > reaction time > reaction temperature > hydrogen peroxide concentration. |
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