A combined and sustainable approach and a novel mechanism for recovering Bi, Au and Ag from high-chloride leachate of waste printed circuit board smelting ash
文献类型：期刊论文
| 作者 | Liu, Gongqi1,2; Wu, Yufeng2; Li, Bin2; Yuan, Haoran1; Gu, Jing1; Pan, De'an2 |
| 刊名 | JOURNAL OF HAZARDOUS MATERIALS
 |
| 出版日期 | 2024-03-05 |
| 卷号 | 465页码:13 |
| 关键词 | High-chloride leachate Rare and precious metals Precipitation Cementation Recycling |
| ISSN号 | 0304-3894 |
| DOI | 10.1016/j.jhazmat.2023.133349 |
| 通讯作者 | Wu, Yufeng(wuyufeng3r@126.com) |
| 英文摘要 | High-chloride leachate is a solution rich in precious metals that is produced in chloride hydrometallurgy. It has high levels of both rare and precious metals and hazardous chloride ions, and resource recovery from this solution and its safe disposal have become key objectives in the field of hydrometallurgy. In this study, a sus-tainable process involving "ultrasound-assisted precipitation-Pb powder cementation" was proposed for the stepwise separation and high-value utilization of Bi, Au and Ag obtained from high-chloride leachate. Targeted separation and conversion of Bi were achieved by precipitation-re-acid hydrolysis-ultrasonication-assisted coprecipitation-centrifugal purification. Under the optimal process conditions, the removal rate of Bi reached 99.52%, while the loss rates of Au and Ag were only 4.63% and 8.72%, respectively. Single-factor experiments of Au and Ag cementation by Pb powder showed that the recovery rates of precious metals could be improved by increasing the temperature, raising the solution pH, and applying mechanical force and ultrasonication. A possible reaction mechanism for Au and Ag cementation with Pb powder was proposed based on macroscopic kinetic analysis and microscopic mineral characterization. This work provides technical support and a theoretical basis for the separation and enrichment of rare and precious metals in chloride hydrometallurgy. |
| WOS关键词 | LEACHING KINETICS ; SELECTIVE SEPARATION ; PRECIOUS METALS ; GOLD ; ACID ; EXTRACTION ; LEAD ; COMPOSITE ; SILVER ; ORE |
| 资助项目 | Key Research and Development Plan of Guangdong Province[2019B110209001] ; CAS Project for Young Scientists in Basic Research, China[YSBR-044] ; China Post- doctoral Science Foundation[2023M733510] |
| WOS研究方向 | Engineering ; Environmental Sciences & Ecology |
| 语种 | 英语 |
| WOS记录号 | WOS:001150237000001 |
| 出版者 | ELSEVIER |
| 资助机构 | Key Research and Development Plan of Guangdong Province ; CAS Project for Young Scientists in Basic Research, China ; China Post- doctoral Science Foundation |
| 源URL | [http://ir.giec.ac.cn/handle/344007/40795]  |
| 专题 | 中国科学院广州能源研究所 |
| 通讯作者 | Wu, Yufeng |
| 作者单位 | 1.Chinese Acad Sci, Guangzhou Inst Energy Convers, Guangzhou 510640, Peoples R China 2.Beijing Univ Technol, Inst Circular Econ, Beijing 100124, Peoples R China |
| 推荐引用方式 GB/T 7714 | Liu, Gongqi,Wu, Yufeng,Li, Bin,et al. A combined and sustainable approach and a novel mechanism for recovering Bi, Au and Ag from high-chloride leachate of waste printed circuit board smelting ash[J]. JOURNAL OF HAZARDOUS MATERIALS,2024,465:13. |
| APA | Liu, Gongqi,Wu, Yufeng,Li, Bin,Yuan, Haoran,Gu, Jing,&Pan, De'an.(2024).A combined and sustainable approach and a novel mechanism for recovering Bi, Au and Ag from high-chloride leachate of waste printed circuit board smelting ash.JOURNAL OF HAZARDOUS MATERIALS,465,13. |
| MLA | Liu, Gongqi,et al."A combined and sustainable approach and a novel mechanism for recovering Bi, Au and Ag from high-chloride leachate of waste printed circuit board smelting ash".JOURNAL OF HAZARDOUS MATERIALS 465(2024):13. |
入库方式： OAI收割
来源：广州能源研究所
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