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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

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

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Author(s):
Botelho Junior, Amilton B. [1] ; Correa, Monica M. Jimenez [1] ; Espinosa, Denise C. R. [1] ; Dreisinger, David [2] ; Tenorio, Jorge A. S. [1]
Total Authors: 5
Affiliation:
[1] Univ Sao Paulo, Dept Chem Engn, Sao Paulo - Brazil
[2] Univ British Columbia, Dept Mat Engn, Vancouver, BC - Canada
Total Affiliations: 2
Document type: Journal article
Source: CANADIAN JOURNAL OF CHEMICAL ENGINEERING; v. 97, n. 4, p. 924-929, APR 2019.
Web of Science Citations: 3
Abstract

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)

FAPESP's process: 17/06563-8 - INFLUENCE OF REDUCING AGENT ON SULFURIC LIQUOR OF NICKEL LATERITE MINING IN THE ION EXCHANGE PROCESS USING CHELATING
Grantee:Amilton Barbosa Botelho Junior
Support type: Scholarships abroad - Research Internship - Master's degree
FAPESP's process: 16/05527-5 - Separation of metals from sulfuric liquor of mining waste using chelating resins
Grantee:Amilton Barbosa Botelho Junior
Support type: Scholarships in Brazil - Master
FAPESP's process: 12/51871-9 - Study Center for Technology in Waste Solid Treatment and Recycling - SCTWSTR
Grantee:Jorge Alberto Soares Tenório
Support type: Research Projects - Thematic Grants