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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.)

Pre-Reducing Process Kinetics to Recover Metals from Nickel Leach Waste Using Chelating Resins

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Author(s):
Botelho Junior, Amilton Barbosa [1] ; Dreisinger, David Bruce [2] ; Romano Espinosa, Denise Crocce [1] ; Soares Tenorio, Jorge Alberto [1]
Total Authors: 4
Affiliation:
[1] Univ Sao Paulo, Dept Chem Engn, Polytech Sch, Sao Paulo - Brazil
[2] Univ British Columbia, Dept Mat Engn, Vancouver, BC - Canada
Total Affiliations: 2
Document type: Journal article
Source: INTERNATIONAL JOURNAL OF CHEMICAL ENGINEERING; 2018.
Web of Science Citations: 3
Abstract

The main problem of the separation process from nickel mining using the ion exchange technique is the presence of iron, which precipitates in pH above 2.00 and causes coprccipitation of copper and cobalt. Chelating resins have the main advantage of being selected for a specific metal present in solution. Studies have been developed to increase the efficiency of metals recovery using chemical reduction and the ion exchange process to recover metals. The aim of this work was to use sodium sulfite as a reducing agent to convert Fe(III) to Fe(II). Chelating resins Lewatit (R) TP 207, selective for copper, and Lewatit (R) TP 220, selective for nickel and cobalt, were studied. Batch experiments were performed to study the effect of pH with and without sodium sulfite. Results indicated that the industrial process has increased efficiency when the reducing process is applied. (AU)

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
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: 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