Zn(II) and Cu(II) Uptake from Acid Solutions with Microcapsules Containing a Non-Specific Alkyl Phosphonic Extractant
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It is studied the uptake of Zn(II) and Cu(II) from acid aqueous solutions using microcapsules containing 2-ethylhexylphosphonic acid mono-2-ethylhexyl ester, a non-specific extractant, as an alternative method for metals separation in place of current techniques as ion-exchange solid resins or solvent extraction. The microcapsules employed in this study were prepared by an in situ radical polimerization method. The amount of extractant held within each microcapsule was determined by potentiometric titration. Many experimental tests were carried out to measure the hydrometallurgical capacity of the microcapsules to remove these metallic ions from the aqueous solutions.
The authors express their thanks to Daihachi Chem. Co. for providing PC-88A extractant. The authors also thank the Japan-Chile Visit Program (JSPS-CONICYT NÂº RC 20437001) by the financial assistance.
Quote ItemJOURNAL OF THE CHILEAN CHEMICAL SOCIETY, V.: 50. issue: 4, p.: 711-714, DEC 2005