A hydrometallurgical process for recovering rare earths and metals from spent fluorescent lamps
| Autor: | Stefano Pucciarmati, Massimiliana Pietrantonio, Danilo Fontana, Giorgia Nadia Torelli, R. De Carolis |
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| Přispěvatelé: | Torelli, G. N., Pucciarmati, S., Pietrantonio, M., Fontana, D., De Carolis, R. |
| Jazyk: | angličtina |
| Rok vydání: | 2015 |
| Předmět: |
Environmental Engineering
Materials science Fluorescent lamps Metallurgy chemistry.chemical_element Fraction (chemistry) Yttrium Management Monitoring Policy and Law Raw material Pollution Fluorescence Copper WEEE chemistry Antimony Fluorescent lamp Scientific method Rare earths Hydrometallurgy Europium |
| Zdroj: | Scopus-Elsevier |
| Popis: | The recovery of raw materials from waste represents a sustainable growth opportunity for those countries with limited mineral resources availability. A case study for an integrated approach to recover raw materials from spent fluorescent lamps is presented, with the aim of improving the current treatments which are only able to recover the glass fraction. In particular a hydrometallurgical process was developed to obtain valuable metals such antimony, copper, and rare earths (yttrium and europium). Grinded powders were leached with several inorganic acids, then antimony and copper were recovered by electrodeposition; Y and Eu were finally precipitated as oxalates. The precipitate was dissolved and the rare earths were separated by solvent extraction. This approach, based on the holistic view of all elements contained in an End–of–Life complex product, ensures both environmental and economic sustainability since it allows waste reduction and materials recovery. © 2015, Gh. Asachi Technical University of Iasi. All rights reserved. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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