Chemical equilibrium studies on the copper-sulfuric acid-kelex 100-xylene system

Lee, C. K.; Tavlarides, Lawrence L.

doi:10.1007/bf02661011

Cited by 15 publications

(4 citation statements)

References 12 publications

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“…The Sherex Chemical Co. supplied a commercial grade of d-alkenyl-8-hydroxyquinoline, known by the trade name "Kelex 100" (Link, 1982). The reagent was treated to remove soluble impurities, as previously described (Lee and Tavlarides, 1983). All other chemicals used were of analytical grade.…”

Section: Experimental Methodsmentioning

confidence: 99%

Interfacial kinetics of iron(III) sulfate-sulfuric acid/.beta.-alkenyl-8-hydroxyquinoline-xylene extraction system

Lee

Tavlarides²

1986

Ind. Eng. Chem. Fund.

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The results of a study of the interfacial kinetics for the extraction of iron(III) in sulfuric acid with /3-alkenyl-8hydroxyquinoline are presented. Use of a liquid jet recycle reactor (LJRR) to obtain the interfacial rate data permits appropriate analysis when mass transfer and interfacial reaction contribute to the overall rate. Ionic speciation in the bulk aqueous phase is modeled to obtain the concentrations of Fe3+ and H+. The postulated mechanism giving rise to the rate expression includes the adsorption of HR and the protonation of HR. It also assumes that the rate-determining step is the formation of FeR2+ in the interfacial region. The postulated model is supported by physicochemical evidence, such as interfacial tension data, and statistical evaluation of the model.

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Section: Experimental Methodsmentioning

confidence: 99%

Interfacial kinetics of iron(III) sulfate-sulfuric acid/.beta.-alkenyl-8-hydroxyquinoline-xylene extraction system

Lee

Tavlarides²

1986

Ind. Eng. Chem. Fund.

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“…Many types of prediction models have been suggested for copper extraction (3)(4)(5)(6)(7)(8), at the same time that new oxime extractants are being introduced into the market with, at the present time, few data available on the literature about their performance on copper solvent extraction.…”

Section: Introductionmentioning

confidence: 99%

Modelling copper solvent extraction from acidic sulphate solutions using MOC 45

Alguacil

1998

REVMETAL

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A mathematical model to predict the extraction has been developed for the Cu-MOC 45 system. The model consists of sets of nonlinear mass action and mass balance equations where the dimerization of the oxime was also considered. The predictive model calculated the equilibrium concentradons from the total oxime concentration, total copper concentration, initial pH valué and the O/A volume phase ratio. The model suggests that the extraction of copper can be defined by the existence of two species into the organic solution: CuR 2 (K ext = 4.2) and Cu(HR 2) 2 (^e x t = 10.000)-The initial oxime concentration defines the predominancy in the organic solution of both species. The model can be used to predict copper extraction isotherm as well as copper stripping with sulphuric acid.

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“…1 The equilibrium reaction for the extraction of copper (II) ions using these extractants has attracted interest and several models have been proposed. [2][3][4][5][6][7][8][9][10] In the present work, the extraction equilibrium of copper from sulfate-sulfuric aqueous solutions by MOC 80TD in Iberfluid was studied, and a model was build-up and solved to predict the distribution coefficients and the copper loading isotherms. The experimental data were compared with the predicted values.…”

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confidence: 99%

Liquid–liquid Extraction Equilibrium in the CuSO₄–H₂SO₄–MOC 80TD–Iberfluid system

Gámez

Cobo

2001

Journal of Chemical Research

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A predictive model, which consists of a set of non-linear mass action and mass balance equations solved by using a tailor-made equation-solving program, is used as a basis to predict experimentally measured distribution coefficients for the CuSO 4 -H 2 SO 4 -MOC 80TD-Iberfluid liquid-liquid extraction system at 20°C and aqueous copper concentrations in the range 0.1-1.0 g l -1 . The model is also used to obtain the copper loading isotherm at various initial aqueous pH values.

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Chemical equilibrium studies on the copper-sulfuric acid-kelex 100-xylene system

Cited by 15 publications

References 12 publications

Interfacial kinetics of iron(III) sulfate-sulfuric acid/.beta.-alkenyl-8-hydroxyquinoline-xylene extraction system

Interfacial kinetics of iron(III) sulfate-sulfuric acid/.beta.-alkenyl-8-hydroxyquinoline-xylene extraction system

Modelling copper solvent extraction from acidic sulphate solutions using MOC 45

Liquid–liquid Extraction Equilibrium in the CuSO₄–H₂SO₄–MOC 80TD–Iberfluid system

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Chemical equilibrium studies on the copper-sulfuric acid-kelex 100-xylene system

Cited by 15 publications

References 12 publications

Interfacial kinetics of iron(III) sulfate-sulfuric acid/.beta.-alkenyl-8-hydroxyquinoline-xylene extraction system

Interfacial kinetics of iron(III) sulfate-sulfuric acid/.beta.-alkenyl-8-hydroxyquinoline-xylene extraction system

Modelling copper solvent extraction from acidic sulphate solutions using MOC 45

Liquid–liquid Extraction Equilibrium in the CuSO4–H2SO4–MOC 80TD–Iberfluid system

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Liquid–liquid Extraction Equilibrium in the CuSO₄–H₂SO₄–MOC 80TD–Iberfluid system