Effect of Excess Metal Concentration on the Extraction Potential of Di-(2-Ethylhexyl) Phosphoric Acid

Authors

  • A S Ahmed Glass and Ceramics Research Centre, PCSIR Laboratories Complex, Ferozepur Road, Lahore-54600, Pakistan
  • M B Bhatty Glass and Ceramics Research Centre, PCSIR Laboratories Complex, Ferozepur Road, Lahore-54600, Pakistan
  • M T Saeed and Glass and Ceramics Research Centre, PCSIR Laboratories Complex, Ferozepur Road, Lahore-54600, Pakistan
  • S K Afridi Glass and Ceramics Research Centre, PCSIR Laboratories Complex, Ferozepur Road, Lahore-54600, Pakistan

Keywords:

: dissociation constant, di-(2-ethylhexyl) phosphoric acid, copper extraction

Abstract

The extraction potential of di-(2-ethylhexyl) phosphoric acid (DEHPA) in kerosene increases manyfold on loading calcium into the organic phase before equilibration with aqueous copper feed. The control of pH was unnecessary in the range from pH 5.0 to pH 3.0. It was found that copper can easily replace nickel, sodium and calcium in the organic phase because of the difference in the dissociation constants of copper and other metals studied. The hydrolysis of calcium maintains the pH of the aqueous phase in favour of higher extraction of copper by DEHPA.

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Published

2020-10-26

How to Cite

Ahmed, A. S., Bhatty, M. B., Saeed, M. T., & Afridi, S. K. (2020). Effect of Excess Metal Concentration on the Extraction Potential of Di-(2-Ethylhexyl) Phosphoric Acid. Biological Sciences - PJSIR, 49(5), 309–313. Retrieved from https://v2.pjsir.org/index.php/biological-sciences/article/view/1230

Issue

Vol. 49 No. 5 (2006): Pakistan Journal of Scientific and Industrial Research

Section

Articles