Magnetic nanohydrometallurgy: A promising nanotechnological approach for metal production and recovery using functionalized superparamagnetic nanoparticles
| Contribuinte(s) |
UNIVERSIDADE DE SÃO PAULO |
|---|---|
| Data(s) |
25/09/2013
25/09/2013
2012
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| Resumo |
We report on a new, promising nanotechnological approach for hydrometallurgy based on recyclable, chemically functionalized superparamagnetic nanoparticles. In this process, the metal ions (e.g. Cu2+) are captured by the nanoparticles and confined at the electrode surface by means of an external magnet. Due to the pre-concentration effect the electrodeposition process is greatly improved, yielding the pure metal in a much shorter time in comparison with the conventional electrodeposition process. After the electrolysis, the magnetic nanoparticles are ready to return to the process. The proposed strategy can advantageously be incorporated in hydrometallurgy, reducing the number of steps associated with complexation, organic solvent extraction, metal release and diffusional electroprocessing, leading to a more sustainable technology. (C) 2012 Elsevier B.V. All rights reserved. FAPESP FAPESP CNPq CNPq PETROBRAS PETROBRAS |
| Identificador |
HYDROMETALLURGY, AMSTERDAM, v. 125, n. 7, pp. 148-151, AUG, 2012 0304-386X http://www.producao.usp.br/handle/BDPI/33723 10.1016/j.hydromet.2012.06.005 |
| Idioma(s) |
eng |
| Publicador |
ELSEVIER SCIENCE BV AMSTERDAM |
| Relação |
HYDROMETALLURGY |
| Direitos |
restrictedAccess Copyright ELSEVIER SCIENCE BV |
| Palavras-Chave | #MAGNETIC NANOHYDROMETALLURGY #SUPERPARAMAGNETIC NANOPARTICLES #COPPER ELECTRODEPOSITION #IRON-OXIDE NANOPARTICLES #SOLVENT-EXTRACTION #CIRCUIT BOARDS #COPPER #ELECTROLYTE #METALLURGY & METALLURGICAL ENGINEERING |
| Tipo |
article original article publishedVersion |
