A fundamental study on recovery of copper with a cation exchange membrane: Part 1 — Ion exchange equilibria between cupric and hydrogen ions

Kojima, Toshinori; Furusaki, Shintaro; Takao, Kenji; Miyauchi, Terukatsu

doi:10.1002/cjce.5450600511

Cited by 15 publications

(19 citation statements)

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“…Therefore Equation (25) is also expected to be valid for this experiment. However, the value of kkU is limited by the diffusion of anion or complex species as CuS04 in the membrane, because the concentration of cation in the membrane is much larger than that of anion (Kojima et al, 1982) and the transfer resistance in boundary film of the aqueous phase is obviously negligible. The values of kkU (= kW,,/fru) from these experiments are shown in Tables 1 and 2 .…”

Section: Resultsmentioning

confidence: 99%

“…The chemical reagents, water and the cation exchange membrane used in this work were the same as those in the previous paper dealing with the cation exchange equilibrium (Kojima et al, 1982). The experimental apparatus used in this work was the same as that in the previous paper dealing with the extraction kinetics of copper-LIX65N system (Kojima and Miyauchi, 1981) and is shown in Figure 1.…”

Section: Methodsmentioning

confidence: 99%

“…It is also possible to apply these derivations on the basis of concentration of dissociated copper ion. The value of feu, which is defined by Equations (26), can be regarded as constant for the condition of Equations (13) (Kojima et al, 1982), therefore Equations (14)…”

Section: (7)mentioning

confidence: 99%

“…and the value of K;1.HSO4 is nearly equal to 10' mol/L (Kojima et al, 1982). Then the following equation is applicable.…”

Section: (7)mentioning

confidence: 99%

“…I librium data with a cation exchange membrane for Cu/H-NO, and Cu/H-S04 systems were reported for the purpose of appraising the process for recovery of copper using the membrane (Kojima et al, 1982). In this paper we report the kinetic data with the membrane for the same systems as in the previous paper (Kojima et al, 1982).…”

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confidence: 99%

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A fundamental study on recovery of copper with a cation exchange membrane: Part 2 — Transfer rate of copper and hydrogen ion through a cation exchange membrane

1982

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Transfer rates of copper and hydrogen ion through a cation exchange membrane were measured experimentally for the systems of Cu/H‐SO4 and Cu/H‐NO3. Transfer rates of anions in the membrane were also measured, and they were negligible compared to those of the cations. Cupric ion and hydrogen ion transfer in a ratio of 1:2 and in opposite directions. The self‐diffusion coefficient of cupric ion in the membrane is obtained from the transfer rate of copper in high concentrations of sulfuric or nitric acid solutions using the equilibria data obtained in our previous work. The coefficient of the hydrogen ion is similarly obtained.

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Section: Resultsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: (7)mentioning

confidence: 99%

“…and the value of K;1.HSO4 is nearly equal to 10' mol/L (Kojima et al, 1982). Then the following equation is applicable.…”

Section: (7)mentioning

confidence: 99%

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confidence: 99%

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A fundamental study on recovery of copper with a cation exchange membrane: Part 2 — Transfer rate of copper and hydrogen ion through a cation exchange membrane

1982

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Anreicherung von Metallionen durch Membranfiltration von Polyelektrolytkomplexen

Schumann

Kümmel

1986

Acta hydrochim. hydrobiol.

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Summary: The separation of heavy metals by complexation with macromolecular water-soluble agents and subsequent ultrafiltration is described. The method can be expected to join common techniques of metal separation like liquid-liquid extraction, adsorption, redox reaction or liquid membrane permeation. Reactions between metal ions and polymer phases are characterized as pH-dependent distribution equilibria illustrated at a propene-maleic acid copolymer as an example. The complexation behaviour of the substance under study is governed by isotherms of the saturation type. Attempts proved to be successful to calculate break-through constants as well as saturation capacities from batch-type studies and dynamic measurements by transferring the laws of adsorption and ion exchange, respectively, to the ultrafiltration process. The quantities of fixed metals amounting to about 2.5 mmol/g were found to be in the range of moderate adsorbents. A solution consisting of 3 solutes has been tested to get more detailed information on mixture behaviour as compared to single component systems. I n the long run, the proposed method should provide an additional variant for the extraction and concentration of metal ions from diluted aqueous solutions. Einfiihrung und ProblemstellungIm System der biogeochemischen Zyklen kommt den Stoffkreislaufen der Schwerinetalle eine besondere Bedeutung zu.

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Developments in Physical Chemistry and Basic Principles of Extractive and Process Metallurgy in 1983

Sohn¹

1984

JOM

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A fundamental study on recovery of copper with a cation exchange membrane: Part 1 — Ion exchange equilibria between cupric and hydrogen ions

Cited by 15 publications

References 13 publications

A fundamental study on recovery of copper with a cation exchange membrane: Part 2 — Transfer rate of copper and hydrogen ion through a cation exchange membrane

A fundamental study on recovery of copper with a cation exchange membrane: Part 2 — Transfer rate of copper and hydrogen ion through a cation exchange membrane

Anreicherung von Metallionen durch Membranfiltration von Polyelektrolytkomplexen

Developments in Physical Chemistry and Basic Principles of Extractive and Process Metallurgy in 1983

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