Zn(ii) and cu(ii) uptake from acid solutions with microcapsules containing a non-specific alkyl phosphonic extractant

• FERNANDO VALENZUELA ^[1] ; MEHRDAD YAZDANI-PEDRAM ^[1] ; CLAUDIO ARANEDA ^[1] ; CARLOS BASUALTO ^[1] ; EIJI KAMIO ^[2] ; KAZUO KONO ^[2]
  1. [1] Universidad de Chile

     Universidad de Chile

     Santiago, Chile

     
  2. [2] Doshisha University

     Doshisha University

     Kamigyō-ku, Japón

     
• Localización: Journal of the Chilean Chemical Society (Boletín de la Sociedad Chilena de Química), ISSN-e 0717-6309, ISSN 0366-1644, Vol. 50, Nº. 4, 2005, págs. 711-714
• Idioma: inglés
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• Resumen

  • 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