Extraction of rare earth and heavy metals, using ionic solvents as extraction medium (A Review)

Villemin, Didier; Didi, Mohamed Amine

doi:10.13005/ojc/290402

Cited by 29 publications

(14 citation statements)

References 32 publications

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“…Since the discovery of air and moisture stable ILs in the 1990s [4], an enormous range of IL species have been synthesized [5][6][7][8] and many studies have explored their application as media for the extraction of metals from aqueous phases [9][10][11][12][13]. As a class, ILs are largely non-flammable and non-volatile, potentially simplifying their use in commercial environments [5][6][7].…”

Section: Introductionmentioning

confidence: 99%

Copper extraction using protic ionic liquids: Evidence of the Hofmeister effect

Janssen

Macı́as-Ruvalcaba

Aguilar-Martı́nez

et al. 2016

Separation and Purification Technology

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Section: Introductionmentioning

confidence: 99%

Copper extraction using protic ionic liquids: Evidence of the Hofmeister effect

Janssen

Macı́as-Ruvalcaba

Aguilar-Martı́nez

et al. 2016

Separation and Purification Technology

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“…Аналогично готовили и бинарные экстрагенты на основе капринатов аминов; далее по тексту указанные экстрагенты будут обозначаться: ка-принат триоктиламина (R 3 NHB), капринат диоктиламина (R 2 NH 2 …”

Section: материалы и методыunclassified

Solvent Extraction the Nitrate of Lanthanide (III) Binary Mixtures Extragents $ Carboxylate and Dialkyl Phosphate Amines

Kalyakin¹,

Кузьмин²,

Mulagaleeva³

2015

J. Sib. Fed. Univ. Chem.

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The use of binary extractants based on carboxilate and dialkilphosphate of the secondary and tertiary amines and their mixture for separation of ions of lanthanides (III) has been investigated. Isotherms of extraction of lanthanides nitrates (III) are linear at the initial segment, the interphase transfer of cation and anion of an inorganic salt is conjugate, lanthanides reextraction can be carried out by water.Studied binary extractanting agents are characterized by high separation factors of lanthanides. The synergetic effect for the system of di-(2-ethylhexyl)carboxylate, caprinate of di-n-octylammonium and tri-n-octylammonium has been found.

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“…Charged metal ions are usually insoluble in hydrophobic ionic liquids (IL), so extractants are necessary in the IL's phase just as in organic solvent (Villemin and Didi, 2014). Therefore, researchers exerted different efforts to increase the distribution coefficients of the ILs by increasing the metal's hydrophobicity.…”

Section: Introductionmentioning

confidence: 99%

Removal of cadmium ions from aqueous solution using very small ionic liquids to water ratio without metal chelator and pH modifications

Abebe¹,

Tilahun²,

Mesfine³

et al. 2017

Eth J Sci & Technol

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Solvent extraction is an energy-efficient technology which uses two immiscible phases. In this regard, solvents like hydrophobic 1-butyl-3-methylimidazolium hexafluorophosphate based ionic liquids have been used. The hydrophilicity of the metal ions is a challenge to use this method. Coordinating the metal ions by ligands, lowering the pH of the aqueous phase, modifying the ionic liquid itself in such a way that it can coordinate with the metal ions, employment of large ionic liquid to aqueous phase ratio (minimum of 1:1) were also the attempts made to improve the distribution coefficient of the ionic liquids. All these efforts are problematic in hindering the applications of ionic liquids in extraction. In this report, the extraction efficiencies of ionic liquids ]) from water samples containing Cd 2+ using very small ionic liquid to water ratio (1:6 and 1:12) from a solution of concentrations 0.005 mg/L with out using any coordinating agent as an extractant and the need of changing the pH are disclosed. While ionic liquids to aqueous phase ratio 1:12 demonstrated extraction efficiencies of 75%, 83.75%, 87.50% and 100%, respectively; the 1:6 ratio extracted 87.50%, 100%, 100% and 100%, respectively which shows suitability of the later ratio for better extraction. Moreover, the recyclabilities of [C 6 mim] [PF 6 ] and [C 8 mim] [PF 6 ] was investigated and the result showed that they can be used at least for five cycles. A Linear calibration curve with good coefficient of determination was obtained during the analysis for determination of the metal in the extracts.

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Extraction of rare earth and heavy metals, using ionic solvents as extraction medium (A Review)

Cited by 29 publications

References 32 publications

Copper extraction using protic ionic liquids: Evidence of the Hofmeister effect

Copper extraction using protic ionic liquids: Evidence of the Hofmeister effect

Solvent Extraction the Nitrate of Lanthanide (III) Binary Mixtures Extragents $ Carboxylate and Dialkyl Phosphate Amines

Removal of cadmium ions from aqueous solution using very small ionic liquids to water ratio without metal chelator and pH modifications

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