Journal of Metallurgy and Materials Science
  • Year: 2013
  • Volume: 55
  • Issue: 4

Solvent Extraction of Zr (IV) from HCl medium using Cyanex 923 as extractant in kerosene

  • Author:
  • Sujata Mishra, B.C. Bhatta1
  • Total Page Count: 6
  • Page Number: 299 to 304

1Department of Chemistry, College of Engineering and Technology, Bhubaneswar, Odisha

Department of Chemistry, Institute of Technical Education and Research, Siksha ‘O’ Anusandhan deemed to be University, Bhubaneswar-751030, Odisha

*Corresponding Author Email: drsujatamishra97@gmail.com

Online published on 1 March, 2014.

Abstract

The extraction of zirconium (Zr) from aqueous HCl solution by Cyanex 923 using kerosene as diluent was studied. The parameters like effect of aqueous acid concentration, extractant concentration, chloride ion concentration, nature of diluents on the extraction of Zr (IV) were studied.

The percentage of extraction of Zr(IV) became 98% with 0.01M Cyanex 923 from 7M HCl and 99% from 5M HCl with 0.04 M Cyanex 923. Toluene was found to be effective diluent for the extraction of Zr(IV) with Cyanex 923. The positive enthalpy change and positive entropy change in extraction system shows endothermic process with increase in randomness. Stripping of Zr (IV) from the loaded organic phase containing and Cyanex 923(0.01M) indicated that HNO3 is the best stripping agents.

Keywords

Solvent extraction, Zirconium, Cyanex 923, Kerosene