A literature review of cerium recovery from different aqueous solutions

Allahkarami, Ebrahim; Rezai, Bahram

doi:10.1016/j.jece.2020.104956

Cited by 38 publications

(20 citation statements)

References 178 publications

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“…The Ce IV /La III separation factor in the presented AcABS is one to two order of magnitude lower than those reported in hydrophobic fluorinated ionic liquids [5] but compares favorably with those reported for solvent extraction using organophosphorus extractants in organic diluents. [30][31][32] However, an important advantage of the AcABS over Ce IV extraction in fluorinated ionic liquids is the suppression of the costly and hazardous fluorinated ion loss to the aqueous phase. [5,33] Whilst it is unlikely that Ce IV will be encountered together with some of the elements in Figure 2C, the purpose of the latter is to determine the potential suitability of the AcABS as a separation platform beyond the scope of this work.…”

Section: Resultsmentioning

confidence: 99%

A HNO₃‐Responsive Aqueous Biphasic System for Metal Separation: Application towards Ce^IV Recovery

et al. 2021

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An acidic aqueous biphasic system (AcABS) presenting a desired and reversible phase transition with HNO 3 concentration and temperature was developed herein as an integrated platform for metal separation. The simple, economical, and fully incinerable (C,H,O,N) AcABS composed of tetrabutylammonium nitrate ([N 4444 ][NO 3 ]) + HNO 3 + H 2 O was characterized and presented an excellent selectivity towards Ce IV against other rare earth elements and transition metals from both synthetic solutions and nickel metal hydride (NiMH) battery leachates. The aciddriven self-assembly of AcABS bridges the gap between traditional ABS and liquid-liquid extraction whilst retaining their advantageous qualities, including compatibility with highly acidic solutions, water as the primary system component, the avoidance of organic diluents, rapid mass transfer, and the potential integration of the leaching and separation steps.

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Section: Resultsmentioning

confidence: 99%

A HNO₃‐Responsive Aqueous Biphasic System for Metal Separation: Application towards Ce^IV Recovery

et al. 2021

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“…Given their important physicochemical properties, rare earth elements (REEs) have been extensively used in many devices such as fluorescent lighting, catalytic converters, rechargeable batteries, magnets, cell phones, and so on [1, 2]. To extract rare metals from aqueous solutions, different methods such as adsorption, ion exchange, membrane separation, solvent extraction, and pyrometallurgy can be applied [3–9].…”

Section: Introductionmentioning

confidence: 99%

Optimization of cerium extraction from aqueous solutions by response surface methodology employing 4‐factor Box‐Behnken design

Allahkarami

Rezai

2022

Materialwissenschaft Werkst

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In this research, the solvent extraction of Cerium (III) using Cyanex 572 has been investigated under variations of the pH, extractant concentration, nitrate ion concentration, and contact time. Box‐Behnken design and analysis of variance were applied to determine the main effects and their interactions. The high R2 value obtained from the developed model indicated a good correlation between the predicted and measured data. Contact time had no significant effect on the extraction of cerium. pH and extractant concentration were the most significant parameters affecting the cerium extraction under the examined conditions. The developed model was applied to find out the optimum values of the selected variables for the maximum extraction of cerium. The nature of diluent influences the extraction efficiency of Cerium (III). Kerosene was found to be efficient diluent for the extraction of cerium in terms of better extraction capability as investigated.

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“…Cerium is a silvery-white rare-earth element that is easily forged and machined [4]. The main cerium deposits are located in the USA, Kazakhstan, Russia, Ukraine, Australia, and some other countries [5]. In metallurgy, cerium is used as an alloying addition.…”

Section: Introductionmentioning

confidence: 99%

Ion Exchange Dynamics in Cerium Nitrate Solution Regulated by Remotely Activated Industrial Ion Exchangers

et al. 2021

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Many technological solutions contain valuable components as waste and can become an additional source of rare-earth elements to meet the needs of modern production. The development of technologies based on commercially available and cheap sorbents reveals the possibility for rare earth recovery from various solutions. This paper provides research on using a combination of KU-2-8 and AV-17-8 ion exchangers in different molar ratios for cerium ions sorption from its nitrate solution. The mutual activation of the ion exchangers in an aqueous medium provides their transformation into a highly ionized state by the conformational and electrochemical changes in properties during their remote interaction. The ion exchange dynamics of solutions were studied by the methods of electrical conductivity, pH measurements, and atomic emission analysis of the solutions. The research showed that the maximum activation of polymers was revealed within the molar ratio of KU-2-8:AV-17-8 equal to 3:3. In more detail, in comparison to AV-17-8, this interpolymer system showed an increase in the sorption degree by more than 1.5 times after 6 h of interaction. Moreover, compared with KU-2-8, the same interpolymer system showed an increase in the degree of cerium ions sorption by seven times after 24 h of interaction. As a result, the total cerium ions sorption degree after 48 h of sorption by individual KU-2-8 and AV-17-8 was 38% and 44%, respectively, whereas the cerium ions sorption degree by the same interpolymer system in the molar ratio 3:3 became 51%. An increase in the sorption degree of cerium ions by the interpolymer system in comparison with individual ion exchangers can be explained by the achievement of a high ionization degree of ion exchangers being activated in the interpolymer system by the remote interaction effect.

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A literature review of cerium recovery from different aqueous solutions

Cited by 38 publications

References 178 publications

A HNO₃‐Responsive Aqueous Biphasic System for Metal Separation: Application towards Ce^IV Recovery

A HNO₃‐Responsive Aqueous Biphasic System for Metal Separation: Application towards Ce^IV Recovery

Optimization of cerium extraction from aqueous solutions by response surface methodology employing 4‐factor Box‐Behnken design

Ion Exchange Dynamics in Cerium Nitrate Solution Regulated by Remotely Activated Industrial Ion Exchangers

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A literature review of cerium recovery from different aqueous solutions

Cited by 38 publications

References 178 publications

A HNO3‐Responsive Aqueous Biphasic System for Metal Separation: Application towards CeIV Recovery

A HNO3‐Responsive Aqueous Biphasic System for Metal Separation: Application towards CeIV Recovery

Optimization of cerium extraction from aqueous solutions by response surface methodology employing 4‐factor Box‐Behnken design

Ion Exchange Dynamics in Cerium Nitrate Solution Regulated by Remotely Activated Industrial Ion Exchangers

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A HNO₃‐Responsive Aqueous Biphasic System for Metal Separation: Application towards Ce^IV Recovery

A HNO₃‐Responsive Aqueous Biphasic System for Metal Separation: Application towards Ce^IV Recovery