The recovery of copper from a pregnant sulphuric acid bioleach solution with developmental resin Dow XUS43605
MetadataShow full item record
Copyright © 2013 The Southern African Institute of Mining and Metallurgy
This paper focuses on the application of ion exchange technology for the recovery of copper from a leach solution originating from a heap bioleach in which base metals are leached from a low-grade ore that bears platinum group metals. Screening tests indicated that Dow XUS43605 has high selectivity for copper over the other metals in the solution, namely nickel, iron, cobalt, zinc, manganese, and aluminium. Batch adsorption kinetic experiments showed that copper adsorption equilibrium is attained at a fast rate. The kinetics of adsorption increased as the temperature was increased from 25°Cto 60°C due to the decrease in solution viscosity and the subsequent improved intra-particle mass diffusion. Single-component Langmuir and Freundlich isotherm models were fitted to the batch copper adsorption equilibrium data, and a maximum copper capacity of26 g/l was observed for Dow XUS43605. The effects of flow rate, temperature, pH, and initial metal concentration on the dynamic recovery of copper were investigated in fixed-bed columns, and it was determined that temperature and flow rate had the most significant impacts on the loading of copper on the resin at copper breakthrough. A 36% increase in copper loading at breakthrough was observed when the temperature was increased from 25°C to 60°C. Finally, it was determined that a split elution is possible by using different concentrations of H2SO4 to first elute co-loaded nickel from the resin, followed by the elution of copper.
Showing items related by title, author, creator and subject.
Terdkiatburana, Thanet (2007)Humic substances are macromolecules that naturally occur in all environments in which vegetation matter are present. In general, humic acid is part of humic substances which form the major fraction of the dissolved organic ...
Removal of ZN (II) Metal Ions From Aqueous Solution By Aluminium Oxide (AL2 O3): A Kinetic And Equilibrium StudySen, Tushar; Mei, C. (2012)In this work the adsorptive properties of aluminium oxide in the removal of zinc (Zn2+) from aqueous solution have been studied by laboratory batch adsorption kinetic and equilibrium experiments.The results show that the ...
The application of activated carbon for the adsorption and elution of platinum group metals from dilute cyanide leach solutionsSnyders, C.; Mpinga, C.; Bradshaw, S.; Akdogan, G.; Eksteen, Jacques (2013)The research presented in this paper investigated the practical aspects of the recovery of platinum group metals (PGMs) from a dilute cyanide leach solution containing base metals, in a manner similar to that used for ...