A novel sorbent for lanthanide adsorption based on tetraoctyldiglycolamide, modified carbon inverse opals

Туранов, А. Н.; Карандашев, В. К.; Сухинина, Н. С.; Масалов, В. М.; Zhokhov, A. A.; Емельченко, Г. А.

doi:10.1039/c4ra11999a

Cited by 24 publications

(7 citation statements)

References 31 publications

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“…The maximum capacity of our materials can be compared to the literature. Turanov et al 15 obtained a capacity of 18 mg g −1 for Eu in a 3 M HNO 3 matrix with a DGA impregnated on porous carbon (inverse opal), but impregnated ligands tend to exhibit lower capacity upon cycling. Fan et al 48 observed a capacity of 55.56 mg g −1 for Eu with humeric acid grafted on carbon nanotubes at pH 4.5, a medium 2 orders of magnitude more alkaline than that used in this study.…”

Section: Ph Variation Studymentioning

confidence: 99%

“…Yet, one of the most important challenges with OMC used as solid-phase for SLE is the proper control of the surface modification. Previous attempts have shown the possibility to use DGA-type ligand-modified carbon nanotubes and porous carbon to extract lanthanides or actinides in aqueous solution. , As highlighted in Table , published articles using carbon-based adsorbents for lanthanide extraction have focused on one or two elements instead of assessing the separation behavior for all Ln. In addition, the conditions used to evaluate the adsorption performances of these materials are often in pH conditions much higher than those used in industrial settings.…”

Section: Introductionmentioning

confidence: 99%

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Functionalization of Mesoporous Carbon Materials for Selective Separation of Lanthanides under Acidic Conditions

Perreault

Giret

Gagnon

et al. 2017

ACS Appl. Mater. Interfaces

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New functional mesoporous carbon sorbents were successfully synthesized to overcome some issues of solid-liquid extraction (e.g., selectivity, extraction capacity, and reusability under acidic conditions) in production of pure lanthanides (Ln). Wet-oxidation technique was performed to increase the surface reactivity of pristine ordered mesoporous carbon (OMC), and, in a second step, a surface modification using diglycolamide-based (DGA-based) selective ligands toward Ln was performed. Two types of ligands were tested: the first contains a long spacer (e.g., between carbon support and chelating function), and the second has a shorter one. These materials have been characterized by X-ray photoelectron spectroscopy (XPS), low-angle X-ray diffraction (XRD), thermogravimetric analysis, nitrogen sorption, transmission electron microscopy (TEM), and scanning electron microscopy (SEM). These analyses confirmed that the carbon mesostructure was maintained after organo-functionalization of the surface and showed the covalent attachment of selective ligands. These new materials, and especially the system with a short spacer between the ligand and the surface, reveal unique Ln selectivity profiles with improved extraction performances for the recovery of lanthanides, in terms of both selectivity and adsorption capacity, and unprecedented stability under acidic conditions.

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Section: Ph Variation Studymentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Functionalization of Mesoporous Carbon Materials for Selective Separation of Lanthanides under Acidic Conditions

Perreault

Giret

Gagnon

et al. 2017

ACS Appl. Mater. Interfaces

View full text Add to dashboard Cite

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“…Much of the research work on Sc(III) recovery by adsorption and extraction has been performed with resins, [10][11][12][13] 17 or extractants impregnated onto a solid support. [18][19][20][21] Ionic liquids (ILs) show a great potential for application in hydrometallurgy, both solvent extraction [22][23][24] and leaching.…”

Section: Introductionmentioning

confidence: 99%

Recovery of scandium(iii) from diluted aqueous solutions by a supported ionic liquid phase (SILP)

2017

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The adsorption of scandium from diluted, acidic solutions by a supported ionic liquid phase (SILP) was investigated, as part of a process for recovery of scandium from bauxite residue (red mud). Both dry impregnation and covalent linking were studied for the SILP preparation. The SILP betainium sulfonyl(trifluoromethanesulfonylimide) poly(styrene-co-divinylbenzene) [Hbet-STFSI-PS-DVB] was prepared by covalent linking of the ionic liquid to the resin and this resulted in an adsorbent suitable for scandium recovery. For a chloride feed solution, the effects of pH, contact time, adsorption capacity, desorption, reusability of adsorbent and the influence of Fe(III), Al(III) and Ca(II) on the Sc(III) adsorption were studied. The adsorption of Sc(III) from nitrate and sulfate feed solution under optimal conditions was studied as well. The adsorption kinetics followed a pseudo-second order kinetic model. Equilibrium studies at room temperature showed that the experimental data could be well fitted by the Langmuir isotherm model. The stripping of Sc(III) from the loaded SILP was achieved with 1 M sulfuric acid. The SILP was stable and could be reused for seven adsorption/desorption cycles without significant losses in its adsorption efficiency for Sc(III). IntroductionScandium belongs to the group of rare-earth elements (REEs) and nds applications in aluminum alloys, halide lamps and fuel cells.1 However, it is an expensive metal with small global production volumes. Although scandium is relatively abundant in the Earth's crust (22 ppm), there are few scandium minerals and it rarely occurs in rich ore deposits. It is mainly recovered as by-product from the production of other metals (REEs, U, Ti, W, Al, Ni, Ta and Nb).2-4 Bauxite residue (red mud), the waste industrial product of the Bayer process for alumina production from bauxite ore, can contain up to 130 ppm of scandium and it is potentially a valuable scandium resource.5,6 Scandium can partially be recovered from bauxite residue by acid leaching. Typically, in this way many metal impurities go into the leachate as well and in concentrations much higher than that of scandium. 1,7,8 Liquid-liquid extraction is used for the recovery of Sc(III), 9 but it requires much higher initial concentrations of Sc(III) than the ones that can be found in the pregnant leach solutions.1 Nevertheless, for recovery of low concentrations of Sc(III) its enrichment with a selective adsorbent in high capacity ion exchange columns could be an efficient technique. Much of the research work on Sc(III) recovery by adsorption and extraction has been performed with resins, View Article OnlineView Journal | View Issue components can contaminate the aqueous effluents. 37 In the second class of SILPs there is no discrete IL phase in the structure of the solid support. Instead, the IL can be considered as a covalently anchored ligand. Covalent linking ensures that the IL will not be leached from the support. 32,40The objective of this work is to develop a stable SILP for the adsorption of Sc(III...

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“…However, large inventories of diluents and modifiers were used in solvent extraction, thereby leading to severe environmental problems . Various techniques based on adsorption, such as polymeric composite bead, magnetic nanomaterial, hybrid material, , modified carbon inverse opal, were developed to restrict the hazardous impacts of volatile organic compounds. The advantages of adsorption, that is, simplicity, flexibility, cost effectiveness, ease of operation, and lower consumption of hazardous reagent (no hazardous diluent is used), make it a competitive alternative to solvent extraction …”

Section: Introductionmentioning

confidence: 99%

Development of Magnetic Silica Hybrid Material with P507 for Rare Earth Adsorption

2016

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A magnetic silica hybrid material (MSHM) containing 2-ethylhexylphosphonic acid mono-(2-ethylhexyl) ester (P507) for rare earth adsorption was developed. Compared with a common grafting preparation method of magnetic silica hybrid material, the developed strategy of embedding the extractant using a sol–gel method revealed simple and efficient advantages. The prepared hybrid materials were analyzed by scanning electron microscopy, Fourier infrared spectroscopy, magnetization, energy dispersive spectrometry, and thermogravimetric analysis. As for the adsorption kinetics, the pseudo-second-order equation fitted well the experimental data. Adsorption of Y(III) using the MSHM fit well with the Langmuir isotherm model rather than the Freundlich isotherm model. The values of thermodynamic parameters at 303 K, 311 K, 318 K, and 333 K were calculated. Hydrochloric acid solution was used for the desorption of Y(III) loaded on MSHM. The effective separation of Y(III) and Eu(III) revealed its potential for phosphor recycling.

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A novel sorbent for lanthanide adsorption based on tetraoctyldiglycolamide, modified carbon inverse opals

Cited by 24 publications

References 31 publications

Functionalization of Mesoporous Carbon Materials for Selective Separation of Lanthanides under Acidic Conditions

Functionalization of Mesoporous Carbon Materials for Selective Separation of Lanthanides under Acidic Conditions

Recovery of scandium(iii) from diluted aqueous solutions by a supported ionic liquid phase (SILP)

Development of Magnetic Silica Hybrid Material with P507 for Rare Earth Adsorption

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