Solvent Extraction Equilibria of FeCl&lt;SUB&gt;3&lt;/SUB&gt; from Hydrochloric Acid Solution with Alamine336

Lee, Man Seung; Lee, Kyoung-Ju; Oh, Young-Joo

doi:10.2320/matertrans.45.2364

Cited by 27 publications

(20 citation statements)

References 15 publications

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“…[4][5][6][7][8][9][10][11][12][13] TBP, TOPO, and DOS have been widely used in the separation of base metals together with PGMs 13,14) and in the refining of precious metals. 15,16) The existence form of PGMs and availability of certain type of metal species are highly dependent on the acidity and chloride concentration in the aqueous solution.…”

Section: Introductionmentioning

confidence: 99%

Separation of Pt(IV) and Rh(III) from Chloride Solution by Solvent Extraction with Amine and Neutral Extractants

Sun

Lee

2011

Mater. Trans.

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Solvent extraction experiments were performed to separate platinum and rhodium from mixed chloride solution by using amine and neutral extractants. Effects of extraction conditions on the separation of the two metals were investigated as a function of extractant concentration in the HCl concentration range from 1 to 9 mol/dm 3 . Alamine304-1, Alamine308, Alamine336, Aliquat336, TBP, TOPO and DOS were tested in our study. The concentration of Pt(IV) and Rh(III) in the mixed solution was fixed at 0.001 mol/dm 3 and 0.0001 mol/dm 3 , respectively. In the extraction with amine, Pt was completely extracted irrespective of HCl concentration, while the extraction percentage of Rh depended on extraction condition. In the extraction with neutral extractants, the extraction percentage of Rh was nearly zero whereas 1 mol/dm 3 TOPO completely extracted most of Pt in our experimental range. Separation of Pt from Rh by amines except Alamine336 was possible only from 9 mol/dm 3 HCl solution, while complete separation of the two metals by TOPO was possible in the HCl concentration range from 1 to 9 mol/dm 3 . From the consideration of the economics of the separation process, our results indicate that TBP is better than TOPO in separating Pt and Rh from chloride solution.

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Section: Introductionmentioning

confidence: 99%

Separation of Pt(IV) and Rh(III) from Chloride Solution by Solvent Extraction with Amine and Neutral Extractants

Sun

Lee

2011

Mater. Trans.

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“…1,4 Alamine336 (Tertiary amine, R3N, R = CH3(CH2)7) is an anionic extractant and is extensively used in the solvent extraction of various metal ions. 3,[5][6][7] Sayar et al reported the data on the solvent extraction of zinc by Alamine336 from HCl solution up to 10 M. 3 They proposed the following equation to simulate the solvent extraction behavior of zinc in their system. …”

Section: Introductionmentioning

confidence: 99%

Solvent Extraction of Zinc from Strong Hydrochloric Acid Solution with Alamine336

2009

Bulletin of the Korean Chemical Society

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Solvent extraction reaction of Zn(II) by Alamine336 from strong HCl solution up to 10 M was identified by analyzing the data reported in the literature. The equilibrium constant of this reaction was estimated by considering the complex formation between zinc and chloride ion. The necessary thermodynamic parameters, such as equilibrium constant for the formation of complexes and the interaction parameters, were evaluated from the thermodynamic data reported in the literature. The following solvent extraction reaction and the equilibrium constant was obtained by considering the activity coefficients of solutes present in the aqueous phase with Bromley equation. Zn 2+ + 2Cl -+ R3NHClorg = ZnCl3R3NHorg, Kex = 6.33 × 10 2 There was a good agreement between measured and calculated distribution coefficients of Zn(II).

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“…The hydrochloric acid concentration in feed liquor has an important influence on iron extraction [16]. It has been reported that FeCl 3 in the presence of HCl contributes to form HFeCl 4 which could then combine with TBP in the extracted complex and facilitates extraction reaction [9].…”

Section: Effect Of Hcl Concentrationmentioning

confidence: 99%

Liquid-liquid extraction of iron (III) from Ouenza iron ore leach liquor by tributylphosphate

Nouioua

2017

J. Fundam and Appl Sci.

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The solvent extraction of iron (III) from the hydrochloric acid leach liquor of iron ore from mine of Ouenza, Algeria with tributylphosphate (TBP) in chloroform was studied. The effect of several parameters, such as contact time, HCl concentration, TBP concentration and chloride inorganic salt (KCl) concentration on the efficiency of extraction of iron was examined at 19±2 °C. It was found that, for 2 min 3M TBP in presence of 5M HCl and 2 M KCl solutions led to a high yiel of extraction (98.57 %) of iron (III).The stoichiometry of the extracted species was determined by using the method of slope analysis. The number of moles of H +, Cl -and TBP associated with the extracted species was determined and the extracted species was found to be HFeCl 4 (TBP) 2 .

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Solvent Extraction Equilibria of FeCl<SUB>3</SUB> from Hydrochloric Acid Solution with Alamine336

Cited by 27 publications

References 15 publications

Separation of Pt(IV) and Rh(III) from Chloride Solution by Solvent Extraction with Amine and Neutral Extractants

Separation of Pt(IV) and Rh(III) from Chloride Solution by Solvent Extraction with Amine and Neutral Extractants

Solvent Extraction of Zinc from Strong Hydrochloric Acid Solution with Alamine336

Liquid-liquid extraction of iron (III) from Ouenza iron ore leach liquor by tributylphosphate

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