Equilibrium and kinetic studies of the extraction of chelated copper(II) anions with Aliquat 336

Su‐Hsia Lin; Hsiang‐Chien Kao; Shih‐Hung Huang; Ruey‐Shin Juang

doi:10.1002/jctb.545

journal article Jan 04, 2002

Equilibrium and kinetic studies of the extraction of chelated copper(II) anions with Aliquat 336

Su‐Hsia Lin Hsiang‐Chien Kao Shih‐Hung Huang Ruey‐Shin Juang

Journal of Chemical Technology & Biotechnology Vol. 77 No. 2 pp. 168-174 · Wiley

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Abstract

AbstractThe equilibrium and kinetics of solvent extraction of Cu2+ from aqueous solutions containing equimolar EDTA with Aliquat 336 in n‐decanol and kerosene at 298 K were investigated. The concentrations of Cu2+ (8–50 mol m−3), Cl− (5–60 mol m−3), and Aliquat 336 (20–100 mol m−3) were varied. A semi‐empirical model with three parameters was proposed to describe the equilibrium behavior, in which the non‐idealities in both aqueous and organic phases were considered. Over the ranges studied, the model agreed reasonably well with the experimental data (standard deviation, 15%). The forward and backward reaction rate constants were determined as (5.31 ± 0.16)×10−6 m9/4 mol−3/4 s−1 and (2.62 ± 0.09)×10−7 s−1, respectively, at 298 K. An interfacial reaction mechanism was proposed, which revealed that the reaction between the chelated anions and trimeric amine molecules at the interface was rate limiting. The derived rate laws were consistent with the experimental results.© 2002 Society of Chemical Industry

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Details

Published: Jan 04, 2002
Vol/Issue: 77(2)
Pages: 168-174
License: View

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Cite This Article

Su‐Hsia Lin, Hsiang‐Chien Kao, Shih‐Hung Huang, et al. (2002). Equilibrium and kinetic studies of the extraction of chelated copper(II) anions with Aliquat 336. Journal of Chemical Technology & Biotechnology, 77(2), 168-174. https://doi.org/10.1002/jctb.545

Equilibrium and kinetic studies of the extraction of chelated copper(II) anions with Aliquat 336

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