Co-extraction and separation of zirconium and hafnium by long-chain amines from sulphate media

El-Yamani, I. S.; Farah, M.Y.; El-Aleim, F. A. Abd

doi:10.1016/0039-9140(78)80088-5

Cited by 24 publications

(7 citation statements)

References 4 publications

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“…The difficulties encountered are mainly due to the chemical similarities of the respective elements. Among the various alternatives, such as multiple crystallization, extractive distillation and solvent extraction, the crystallization process is the simplest to recover both Zr and Hf, but the method is only of interest in batch operation . Solvent extraction is regarded as a promising method to separate metallic elements …”

Section: Introductionmentioning

confidence: 99%

Selective extraction of Hf(IV) over Zr(IV) from aqueous H₂SO₄ solutions by solvent extraction with acidic organophosphorous based extractants

Banda

Min

Lee

2013

J of Chemical Tech & Biotech

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Section: Introductionmentioning

confidence: 99%

Selective extraction of Hf(IV) over Zr(IV) from aqueous H₂SO₄ solutions by solvent extraction with acidic organophosphorous based extractants

Banda

Min

Lee

2013

J of Chemical Tech & Biotech

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“…Citrate solutions could possibly separate Zr from Hf also with Aliquat 336S (128). El-Yamini and co-workers developed a rapid method to selectively extract Hf from Zr sulfate solutions using a primary amine (PrJM) and 3% v/v octanol modifier in kerosene (129). Moreover the pretreated Alamine 336 in 3% v/v octanol and cyclohexane diluent is also selective for the extraction and separation of Zr over Hf (130).…”

Section: Extraction and Separation Of Zr And Hf With Basic Organic Exmentioning

confidence: 98%

Solvent Extraction for the Separation of Zr and Hf from Aqueous Solutions

Banda

Lee

2014

Separation & Purification Reviews

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The present review mainly focused on the recent extraction and separation studies of Zr and Hf from various acidic aqueous solutions using liquid-liquid extraction. The general purpose associated with the use of liquid-liquid extraction, research on the recent developments from the view point of technological applications and chemistry involved in liquid-liquid extractions of Zr and Hf from acidic aqueous solutions is particularly described. In addition, the well-known conventional methodologies devoted to the selective extraction and separation of Zr and Hf metal ions is presented. The involved extraction reaction in the given system is also discussed and the data provided is systematically classified according to their structural and nature of the extractants participated. The extracted speciation or complexation of metal ion in the organic phases have also been mentioned, types of species responsible for metal extraction, whenever possible, is referred.

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“…Using 2.5 mol/L HCl, the zirconium oxychloride hydrolysate and simulation liquid had separation factors of 11.4 and 34.5, respecttively [7]. Co-extraction and separation of Zr and Hf using primene JM-T extractant as long-chain primary amine from the sulfuric acid medium were carried out by El-Yamani et al [8]. The extraction of Zr from the sulfuric acid medium by using long-chain aliphatic amines was studied by Sato et al [9].…”

Section: Introductionmentioning

confidence: 99%

Liquid-liquid extraction of zirconium(IV) from sulphuric acid medium using a binary mixture of tri-n-octylamine and Cyanex923 in kerosene

2022

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The extraction behaviour of zirconium(IV) from sulfuric acid medium has been studied with a binary mixture of tri-n-octyl amine (TOA) and Cyanex923 (a mixture of four trialkyl phosphine oxides) in kerosene using a novel liquid-liquid extraction method. Quantitative extraction of zirconium(IV) with binary mixture of Cyanex923 and TOA in kerosene was studied by changing different parameters such as acid variation, extractant variation, effect of chloride ion concentration, effect of temperature, metal concentration variation, diluent effect, and pH effect. The percentage of extraction of zirconium(IV) decreased when the concentration of Cyanex923 and TOA increased. The percentage of zirconium(IV) was observed as 97.56% in a binary mixture of 0.007 M Cyanex923 and 0.06 M TOA. Kerosene was found to be an effective diluent for the extraction of zirconium(IV) with 97.56% extraction using a binary mixture of Cyanex923 and TOA. In addition, the stripping of the zirconium(IV) metal ion in the organic phase was also examined.

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Co-extraction and separation of zirconium and hafnium by long-chain amines from sulphate media

Cited by 24 publications

References 4 publications

Selective extraction of Hf(IV) over Zr(IV) from aqueous H₂SO₄ solutions by solvent extraction with acidic organophosphorous based extractants

Selective extraction of Hf(IV) over Zr(IV) from aqueous H₂SO₄ solutions by solvent extraction with acidic organophosphorous based extractants

Solvent Extraction for the Separation of Zr and Hf from Aqueous Solutions

Liquid-liquid extraction of zirconium(IV) from sulphuric acid medium using a binary mixture of tri-n-octylamine and Cyanex923 in kerosene

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Co-extraction and separation of zirconium and hafnium by long-chain amines from sulphate media

Cited by 24 publications

References 4 publications

Selective extraction of Hf(IV) over Zr(IV) from aqueous H2SO4 solutions by solvent extraction with acidic organophosphorous based extractants

Selective extraction of Hf(IV) over Zr(IV) from aqueous H2SO4 solutions by solvent extraction with acidic organophosphorous based extractants

Solvent Extraction for the Separation of Zr and Hf from Aqueous Solutions

Liquid-liquid extraction of zirconium(IV) from sulphuric acid medium using a binary mixture of tri-n-octylamine and Cyanex923 in kerosene

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Selective extraction of Hf(IV) over Zr(IV) from aqueous H₂SO₄ solutions by solvent extraction with acidic organophosphorous based extractants

Selective extraction of Hf(IV) over Zr(IV) from aqueous H₂SO₄ solutions by solvent extraction with acidic organophosphorous based extractants