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      Solvent extraction for metal and water recovery from industrial wastes and effluents Translated title: Extração por solventes aplicada à recuperação de metais e da água a partir de resíduos industriais e efluentes líquidos

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          Abstract

          The use of solvent extraction to recover metals and water from industrial residues is highlighted in this work. The method was applied (1) to selectively concentrate Zn from effluents generated by the zinc industry, (2) to separate Zn and Fe from spent pickling effluents produced by the hot-dip galvanizing industry, and (3) to recover Co and Ni from spent batteries. Batch and pilot scale data was used to point out solvent extraction as a feasible method to reuse both metals and water thus resulting in energy savings with reducing environmental impacts, minimizing costs required to transport hazardous materials to waste sites, to replace the discharged wastewater and to produce the raw material that would be previously discharged as wastes.

          Translated abstract

          A aplicação da técnica de extração por solventes para a recuperação de metais e da água a partir de resíduos e efluentes industriais é apresentada nesse trabalho. Os seguintes estudos de caso foram analisados: (1) separação seletiva e concentração de Zn contido em efluentes gerados na indústria de zinco, (2) separação de Zn e Fe presentes em efluentes da indústria de galvanização a quente e (3) recuperação de Co e Ni a partir de baterias de celular descarregadas. Dados obtidos em escala de laboratório e em escala-piloto foram empregados para demonstrar a potencialidade da técnica no tratamento de efluentes, visando à reutilização, tanto dos metais, quanto da água, que seriam inutilizados, resultando em economia de energia com redução de impactos ambientais, além da minimização dos custos relacionados ao transporte de materiais perigosos e manutenção de aterros.

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          Most cited references8

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          A study of the separation of cobalt from spent Li-ion battery residues

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            Analysis of a hydrometallurgical route to recover base metals from spent rechargeable batteries by liquid–liquid extraction with Cyanex 272

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              Handbook of solvent extraction

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                Author and article information

                Contributors
                Role: ND
                Journal
                rem
                Rem: Revista Escola de Minas
                Rem: Rev. Esc. Minas
                Escola de Minas (Ouro Preto )
                1807-0353
                March 2011
                : 64
                : 1
                : 51-55
                Affiliations
                [1 ] Universidade Federal de Minas Gerais Brazil
                Article
                S0370-44672011000100006
                10.1590/S0370-44672011000100006
                bf47ef52-2228-4588-9b9d-337af7795421

                http://creativecommons.org/licenses/by/4.0/

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                SciELO Brazil

                Self URI (journal page): http://www.scielo.br/scielo.php?script=sci_serial&pid=0370-4467&lng=en
                Categories
                ENGINEERING, CIVIL
                METALLURGY & METALLURGICAL ENGINEERING

                General engineering,Civil engineering
                Solvent extraction,metal recovery,environmental,Extração por solventes,recuperação de metais,meio ambiente

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