Removal of cerium from different aqueous solutions using different adsorbents: A review

Allahkarami, Ebrahim; Rezai, Bahram

doi:10.1016/j.psep.2019.03.002

Cited by 67 publications

(32 citation statements)

References 95 publications

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“…There are different techniques for the extraction of neodymium(III) from aqueous solutions, including adsorption (Kanani-Jazi et al, 2020;Park and Tavlarides, 2010), ion exchange (Spedding et al, 1947), pyrometallurgy (Sepahvand et al, 2020;Yoon et al, 2014), and solvent extraction (Kao et al, 2006). The advantages and disadvantages of these method were explained in the literature (Allahkarami and Rezai, 2019). To extract neodymium(III) from different resources, different acids such as HCl, HNO3, and H2SO4 are used.…”

Section: Introductionmentioning

confidence: 99%

Extraction of neodymium(III) from aqueous solutions by solvent extraction with Cyanex® 572

Allahkarami¹,

Rezai²,

Bozorgmehr³

et al. 2021

Physicochem. Probl. Miner. Process.

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Section: Introductionmentioning

confidence: 99%

Extraction of neodymium(III) from aqueous solutions by solvent extraction with Cyanex® 572

Allahkarami¹,

Rezai²,

Bozorgmehr³

et al. 2021

Physicochem. Probl. Miner. Process.

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“…Therefore, the demand for these metals is increasing. [1] Neodymium is one of the most important metals of lanthanides family that has wide applications in different industries such as alloys, glass dyes, catalysts, lasers, solar panels, and magnets. [2] In 2015, some rare earth metals such as neodymium, dysprosium, europium, yttrium, and terbium were found to be critical in the short term due to supply risk and the importance of clean energy.…”

Section: Introductionmentioning

confidence: 99%

“…Given their different chemical, metallurgical, optical, electrical, and catalytic properties, rare earth elements (REEs) have various uses in different uses, especially in high‐tech industries. Therefore, the demand for these metals is increasing [1] . Neodymium is one of the most important metals of lanthanides family that has wide applications in different industries such as alloys, glass dyes, catalysts, lasers, solar panels, and magnets [2] .…”

Section: Introductionmentioning

confidence: 99%

Synergistic solvent extraction of neodymium form nitric acid medium using Cyanex 302 and D2EHPA

Allahkarami

Rezai

Bozorgmehr

et al. 2021

Zeitschrift anorg allge chemie

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In this research, a binary mixture of Cyanex 302 (bis-2,4,4 trimethylpentyl monothiophosphinic acid) and D2EHPA (di-2ethylhexyl phosphoric acid) in kerosene was used for extracting neodymium from nitric acid medium. The different variables affecting the extraction of Nd(III) such as contact time, solution acidity, extractant concentration, and temperature were investigated. Stripping of neodymium ions from the loaded organic phase using HCl, HNO3, and H 2 SO 4 for the re-extraction of neodymium was also carried out. Results indicated that the most efficient reagent for the stripping of neodymium was nitric acid. The extraction reaction of neodymium with the synergistic mixture was determined using graphical method to be NdH 5 A 2 B 6 . The organo-metallic complex containing neodymium was examined by Fourier Transform Infrared Spectroscopy (FT-IR). The values of stoichiometric coefficients and thermodynamic parameters were calculated for this mixture. The extraction was an endothermic process, and the thermodynamic functions, ΔH and ΔS were determined to be 10.532 kJ/ mol and À 123.681 j/mol°K, respectively for the system under study. The Cyanex 302 + D2EHPA system not only increased the extraction efficiency of neodymium but also improved the selectivity significantly. The separation factor of neodymium and praseodymium suggested that this mixture would be of practical value in the separation of neodymium.

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“…These high-molecular synthetic compounds with a three-dimensional gel and macroporous structure, which contain functional groups of an acidic or basic nature, capable of ion exchange reactions. Modern sorption technologies for extraction of rare-earth metals in hydrometallurgy are commonly based on application of ion-exchangers [ 15 , 16 , 17 , 18 , 19 , 20 , 21 , 22 ]. As objects of the study widely used industrial ion-exchange resins Amberlite IR120 (cation exchanger) and AB-17-8 (anion exchanger) were chosen as macromolecular sorbents [ 23 ].…”

Section: Introductionmentioning

confidence: 99%

Impact of Neodymium and Scandium Ionic Radii on Sorption Dynamics of Amberlite IR120 and AB-17-8 Remote Interaction

Jumadilov¹,

Totkhuskyzy

Malimbayeva

et al. 2021

Materials

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The aim of the work is to provide a comparative study of influence of ionic radii of neodymium and scandium ions on their sorption process from corresponding sulfates by individual ion exchangers Amberlite IR120, AB-17-8 and interpolymer system Amberlite IR120-AB-17-8. Experiments were carried out by using the following physicochemical methods of analysis: conductometry, pH-metry, colorimetry, and atomic-emission spectroscopy. Ion exchangers in the interpolymer system undergo remote interactions with a further transition into highly ionized state. There is the formation of optimal conformation in the structure of the initial ion exchangers. A significant increase of ionization of the ion-exchange resins occurs at molar ratio of Amberlite IR120:AB-17-8 = 5:1. A significant increase of sorption properties is observed at this ratio due to the mutual activation of ion exchangers. The average growth of sorption properties in interpolymer system Amberlite IR120:AB-17-8 = 5:1 is over 90% comparatively to Amberlite IR120 and almost 170% comparatively to AB-17-8 for neodymium ions sorption; for scandium ions sorption the growth is over 65% comparatively to Amberlite IR120 and almost 90% comparatively to AB-17-8. A possible reason for higher sorption of neodymium ions in comparison with scandium ions is maximum conformity of globes of internode links of Amberlite IR120 and AB-17-8 after activation to sizes of neodymium sulfate in an aqueous medium.

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Removal of cerium from different aqueous solutions using different adsorbents: A review

Cited by 67 publications

References 95 publications

Extraction of neodymium(III) from aqueous solutions by solvent extraction with Cyanex® 572

Extraction of neodymium(III) from aqueous solutions by solvent extraction with Cyanex® 572

Synergistic solvent extraction of neodymium form nitric acid medium using Cyanex 302 and D2EHPA

Impact of Neodymium and Scandium Ionic Radii on Sorption Dynamics of Amberlite IR120 and AB-17-8 Remote Interaction

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