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

Allahkarami, Ebrahim; Rezai, Bahram

doi:10.1002/mawe.202100088

Cited by 4 publications

(1 citation statement)

References 24 publications

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“…Given their similar physicochemical properties, it is challenging to separate cerium from other rare earth elements 55 . The solvent extraction of Ce (III) from the aqueous solution was successfully performed using Cyanex 572 56 . But, there is no systematic report about the separation of Ce (III) from other rare earths by Cyanex 572.…”

Section: Extraction Mechanismmentioning

confidence: 99%

Predictive capability evaluation and mechanism of Ce (III) extraction using solvent extraction with Cyanex 572

Allahkarami

Rezai

Karri

et al. 2022

Sci Rep

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Owing to the high toxicity of cerium toward living organisms, it is necessary to remove cerium from aqueous solutions. In this regard, the extraction of cerium (Ce (III)) from nitrate media by Cyanex 572 under different operating conditions was examined in this study. The effect of contact time, pH, extractant concentration, and nitrate ion concentration were investigated to characterize the extraction behavior of cerium and based on these outcomes, an extraction mechanism was suggested. The analysis of infrared spectra of Cyanex 572 before and after the extraction of cerium indicated that cerium extraction was performed via a cation-exchange mechanism. Then, the predictive models based on intelligent techniques [artificial neural network (ANN) and hybrid neural-genetic algorithm (GA-ANN)] were developed to predict the cerium extraction efficiency. The GA-ANN model provided better predictions that resulted higher R2 and lower MSE compared to ANN model for predicting the extraction efficiency of cerium by Cyanex 572. The interactive effects of each process variable on cerium extraction were also investigated systematically. pH was the most influential parameter on cerium extraction, followed by extractant concentration, nitrate ion concentration and contact time. Finally, the separation of cerium from other rare earth elements like La (III), Nd (III), Pr (III), and Y (III) was conducted and observed that the present system provides a better separation of cerium from rare heavy earth than light rare earths.

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Section: Extraction Mechanismmentioning

confidence: 99%

Predictive capability evaluation and mechanism of Ce (III) extraction using solvent extraction with Cyanex 572

Allahkarami

Rezai

Karri

et al. 2022

Sci Rep

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Extraction of Cerium (III) by a Solvent Extraction Technique Using Diaminododecylphosphonic Acid (DADTMTPA): Experimental, Density Functional Theory and Molecular Dynamic Studies

et al. 2023

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This paper aims to present the recent results progress on diaminododecylphosphonic acid (DADTMTPA) as an extractant of cerium (III) from Ce(NO 3 ) 3 .6H 2 O solution medium. Different parameters including pH, temperature, extractant concentration, and foreign ions present in the aqueous phase were examined to investigate the extractional mechanism. The optimum conditions of solvent extraction of Ce(III) are as follows: under experimental conditions of 298 K and the initial concentration of Ce(III) being kept at 10 À 4 M at pH 3.50. The agitation duration of 5 min for a volume ratio equal to 2, and the best yield is 77 % in one-step. An increase in the temper-ature reduced the extraction process. The DADTMTPA extracts Ce(III) after the second cycle with a yield of 95 %. The extraction thermodynamic parameters such as ΔG, ΔH and ΔS are also determined and reported. On the other hand, density functional theory (DFT) based on B97D3 functional with 6-311 + + G(d,p) basis set analysis and molecular dynamics simulations were used to extremely fast methods at calculating the nonbonded interactions and to understand its properties of molecular interactions, which have proved to be an adopted and useful tool to predict and describe the chemical behavior of the evolution of the system.

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Activated carbon adsorbents for the removal of emerging pollutants and its adsorption mechanisms

Allahkarami,

Monfared

2024

Sustainable Technologies for Remediation of Emerging Pollutants From Aqueous Environment

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

Cited by 4 publications

References 24 publications

Predictive capability evaluation and mechanism of Ce (III) extraction using solvent extraction with Cyanex 572

Predictive capability evaluation and mechanism of Ce (III) extraction using solvent extraction with Cyanex 572

Extraction of Cerium (III) by a Solvent Extraction Technique Using Diaminododecylphosphonic Acid (DADTMTPA): Experimental, Density Functional Theory and Molecular Dynamic Studies

Activated carbon adsorbents for the removal of emerging pollutants and its adsorption mechanisms

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