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Título: | Recent trends in metals extraction |
Autor: | Regel-Rosocka, M.; Alguacil, Francisco José CSIC ORCID | Palabras clave: | Liquid-liquid extraction Caesium Extractants Ionic liquids Metals |
Fecha de publicación: | 2013 | Editor: | Consejo Superior de Investigaciones Científicas (España) | Citación: | Revista de Metalurgia 49 (4): 292-316 (2013) | Resumen: | After near 70 years of practical usage, solvent extraction is a perfectly mastered technique of separation, widely used on an industrial scale for the separation of metals mainly from raw materials. However, currently, in the era of depleting natural resources and increasingly less accessible deposits, environmental restrictions, etc., an increasing interest, both from social and economical constrains, is being directed at the extraction of metals from the secondary sources (such as batteries, electronic scrap). In many cases, solvent extraction, due to its operational characteristics, can be considered as the Best Available Technology for the purpose of separating multielemental metal solutions. This paper provides a brief overview of past achievements and present scenario of solvent extraction investigations and developments, describing some recently commissioned solvent extraction plants, whereas the Skorpion Zinc plant (Namibia) for zinc extraction from raw materials and caesium removal from radioactive High Level Wastes (HLWs) are told over in detail as case studies. The paper also presents some proposals for the use of liquid-liquid extraction to separate metal ions from secondary sources (e.g. cobalt from industrial waste streams). The review highlights the emerging use of ionic liquids as new extractants for metals, providing an insight into this exciting research field. Despite its detractors, solvent extraction has entered in force into XXI century as a leading separation technology for metals. | URI: | http://hdl.handle.net/10261/112847 | DOI: | 10.3989/revmetalm.1344 | Identificadores: | doi: 10.3989/revmetalm.1344 issn: 0034-8570 |
Aparece en las colecciones: | (CENIM) Artículos |
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Extraction metals.pdf | 2,09 MB | Adobe PDF | Visualizar/Abrir |
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