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(Referência obtida automaticamente do Web of Science, por meio da informação sobre o financiamento pela FAPESP e o número do processo correspondente, incluída na publicação pelos autores.)

Recovery of Cu(II) from nickel laterite leach using prereduction and chelating resin extraction: Batch and continuous experiments

Texto completo
Autor(es):
Botelho Junior, Amilton B. [1] ; Correa, Monica M. Jimenez [1] ; Espinosa, Denise C. R. [1] ; Dreisinger, David [2] ; Tenorio, Jorge A. S. [1]
Número total de Autores: 5
Afiliação do(s) autor(es):
[1] Univ Sao Paulo, Dept Chem Engn, Sao Paulo - Brazil
[2] Univ British Columbia, Dept Mat Engn, Vancouver, BC - Canada
Número total de Afiliações: 2
Tipo de documento: Artigo Científico
Fonte: CANADIAN JOURNAL OF CHEMICAL ENGINEERING; v. 97, n. 4, p. 924-929, APR 2019.
Citações Web of Science: 3
Resumo

The processing of laterite ores for nickel and cobalt production is increasing to meet the global demand for these metals. Sulphuric acid is used as a leaching agent, and metals present in the solution may be recovered by many different processes, such as ion exchange. The main problem with nickel limonite layer leach solution is the high concentration of iron, which decreases the efficiency of resin adsorption of nickel and cobalt. The removal of iron by oxidation and precipitation results in nickel, copper, and cobalt losses (co-precipitation). The aim of this work was to investigate the chelating resin extraction to recover copper from a leachate combined with a pre-reduction process, in order to increase the resin's efficiency and to increase its pH above 2.00. The following three synthetic solutions were studied: first, a solution prepared with Fe(III); the second solution was prepared with Fe(II); and the last solution was prepared with Fe(III) using a reducing process. Batch experiments were performed to study the influence of pH and temperature, and column experiments with three solutions were compared in order to verify suitable conditions to recover Cu(II) in a fixed-bed column process. (AU)

Processo FAPESP: 16/05527-5 - Separação de metais a partir de líquor sulfúrico de resíduo de mineração utilizando resinas quelantes
Beneficiário:Amilton Barbosa Botelho Junior
Linha de fomento: Bolsas no Brasil - Mestrado
Processo FAPESP: 17/06563-8 - Influência do agente redutor no líquor sulfúrico de resíduo de mineração no processo de troca-iônica utilizando resina quelante
Beneficiário:Amilton Barbosa Botelho Junior
Linha de fomento: Bolsas no Exterior - Estágio de Pesquisa - Mestrado
Processo FAPESP: 12/51871-9 - Estudo de novas tecnologias e rotas de processamento para o tratamento e reciclagem de resíduos sólidos
Beneficiário:Jorge Alberto Soares Tenório
Linha de fomento: Auxílio à Pesquisa - Temático