Extraction Kinetics of Copper with 2-Ethylhexyl-phosphonic Acid Mono-2-ethylhexyl Ester

Yoshinobu Sato; Yoshiro Akiyoshi; Kazuo Kondo; Fumiyuki Nakashio

doi:10.1252/jcej.22.182

Yoshinobu Sato, Yoshiro Akiyoshi, Kazuo Kondo, Fumiyuki Nakashio

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Keywords: Extraction, Stripping, Kinetics, Interfacial Adsorption Equilibrium, Membrane Extractor, Hollow Fiber, Copper, PC-88A

JOURNAL FREE ACCESS

1989 Volume 22 Issue 2 Pages 182-189

DOI https://doi.org/10.1252/jcej.22.182

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Abstract

Extraction and stripping of copper with 2-ethylhexyl phosphonic acid mono-2-ethylhexyl ester dissolved in n-heptane were carried out at 303 K in both a stirred transfer cell and a membrane extractor using a hollow fiber, along with a study of the interfacial adsorption equilibria of extractant and copper complex between aqueous and organic solutions. These results obtained by use of both the stirred transfer cell and the membrane extractor were explained by a diffusion model with interfacial reaction.

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