Synergism in the Solvent Extraction of Europium(III) with Thenoyltrifluoroacetone and CMPO in Methylimidazolium Ionic Liquids

Atanassova, Maria; Kurteva, Vanya

doi:10.1007/s10953-019-00844-8

Cited by 15 publications

(18 citation statements)

References 64 publications

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“…The key of the operation is the carrier used to transport the metals, and ionic liquids are such carriers. Ionic liquids are a group of chemicals whose properties identify them as green solvents, which among other uses [18][19][20] , makes them suitable for the removal of metals from aqueous solutions [21][22][23][24][25][26] .…”

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confidence: 99%

Dispersion-free extraction of In(III) from HCl solutions using a supported liquid membrane containing the HA324H+Cl− ionic liquid as the carrier

López

2020

Sci Rep

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By reaction of HCl and the tertiary amine HA324, an ionic liquid denoted HA324H + cl − was generated and used in the transport of indium(iii) from Hcl solutions. Metal transport experiments were carried out with a supported liquid membrane, and several variables affecting the permeation of indium(III) across the membrane were tested: stirring speed, metal and acid concentrations in the feed solutions and the carrier concentration in the supported organic solution. the metal transport results were also compared with those obtained using different carriers in the solid support. A model that described indium(III) transport across the membrane was proposed, and the corresponding diffusional parameters were estimated.

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confidence: 99%

Dispersion-free extraction of In(III) from HCl solutions using a supported liquid membrane containing the HA324H+Cl− ionic liquid as the carrier

López

2020

Sci Rep

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“…Taking into account the efficiency of beta-diketone (HTTA) and benzoylacetone (HBA), these extractants have been combined or engaged in synergistic systems with different neutral extractants, such as TOPO or CMPO. Accordingly, we can notably cite the systems HTTA-TOPO [151][152][153][154], HBA-TOPO [154,155], HTTA-CMPO [156] and HBA-CMPO [157], which have all been diluted in various…”

Section: Combination Of Extractant and Synergistic Systemsmentioning

confidence: 99%

Recovery of Rare Earth Elements (REEs) Using Ionic Solvents

et al. 2021

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Rare earth elements (REEs) are becoming more and more significant as they play crucial roles in many advanced technologies. Therefore, the development of optimized processes for their recovery, whether from primary resources or from secondary sources, has become necessary, including recovery from mine tailings, recycling of end-of-life products and urban and industrial waste. Ionic solvents, including ionic liquids (ILs) and deep-eutectic solvents (DESs), have attracted much attention since they represent an alternative to conventional processes for metal recovery. These systems are used as reactive agents in leaching and extraction processes. The most significant studies reported in the last decade regarding the recovery of REEs are presented in this review.

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“…18 The extraction of trivalent lanthanides with a blend of CMPO and β-diketone type anionic ligands from 4-acylpyrazolone family or β-diketone 2-thenoyltrifluoroacetone (HTTA) dissolved in imidazolium-based ionic liquids has been also reported. 16,30 Some studies on the extraction of metal ions with mixtures of two electrically neutral extractants in ILs have been published. Addition of tri(n-butyl) phosphate ((BuO)3PO, TBP) is shown to synergically enhance the extraction of strontium(II) from nitric acid solutions by dicyclohexano-18-crown-6 in imidazolium-based ILs.…”

Section: Introductionmentioning

confidence: 99%

Solvent extraction of intra-lanthanides using a mixture of TBP and TODGA in ionic liquid

2020

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In this study, we have investigated the solvent extraction of yttrium(III) and lanthanide(III) ions from nitric acid solutions in an organic phase consisting of a mixture of two electrically neutral extractants, namely tri-n-butyl phosphate(TBP) and N,N,N',N'-tetra(n-octyl)diglycolamide (TODGA). We employed hydrophobic room-temperature ionic liquid 1-methyl-3-butyl-imidazolium bis(trifluoromethanesulfonyl)imide as more environmentally benign diluent as compared to conventional molecular solvents. The results revealed that the addition of TBP as a co-extractant to TODGA dissolved in this ionic liquid not only enhance greatly the metal ion extraction, but also induce high intra-lanthanide ion selectivity. This was attributed to the formation of complex lanthanide species with both organic extracting agents, TBP and TODGA. In addition, when IL is used as diluent, cationic exchange between metal-organic ligand species and IL cations and neutral complex extraction result in more efficient extraction. Moreover, hydrophobic anionic IL entities could be also involved in the extraction mechanism resulting in the lipophilic metal-organic ligand complexes. The synergic solvent combination of TODGA, TBP and ionic liquid offers a possibility of excellent separation among the lanthanide(III) ions.

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Synergism in the Solvent Extraction of Europium(III) with Thenoyltrifluoroacetone and CMPO in Methylimidazolium Ionic Liquids

Cited by 15 publications

References 64 publications

Dispersion-free extraction of In(III) from HCl solutions using a supported liquid membrane containing the HA324H+Cl− ionic liquid as the carrier

Dispersion-free extraction of In(III) from HCl solutions using a supported liquid membrane containing the HA324H+Cl− ionic liquid as the carrier

Recovery of Rare Earth Elements (REEs) Using Ionic Solvents

Solvent extraction of intra-lanthanides using a mixture of TBP and TODGA in ionic liquid

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