Nd(III) and Dy(III) extraction from discarded NdFeB magnets using TOPO-based hydrophobic eutectic solvents

Babu M. K., Sajith; Katchala, Nanaji; Sivakumar Natarajan, Thillai; Suresh, S.; Kancharla, Srinivasarao

doi:10.1016/j.molliq.2024.124697

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Journal of Molecular Liquids

2024

DOI: 10.1016/j.molliq.2024.124697

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Nd(III) and Dy(III) extraction from discarded NdFeB magnets using TOPO-based hydrophobic eutectic solvents

Sajith Babu M. K.,

Nanaji Katchala,

Thillai Sivakumar Natarajan

et al.

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2024

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Cited by 2 publications

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Rapid and highly efficient removal of aqueous perfluorooctanoic acid using deep eutectic solvents for sustainable water remediation: An integrated experimental-modeling approach

Eid,

Lemaoui,

Darwish

et al. 2024

Chemical Engineering Journal

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Rapid and highly efficient removal of aqueous perfluorooctanoic acid using deep eutectic solvents for sustainable water remediation: An integrated experimental-modeling approach

Eid,

Lemaoui,

Darwish

et al. 2024

Chemical Engineering Journal

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Study of the Adsorption and Separation Behavior of Scandium and Zirconium by Trialkyl Phosphine Oxide-Modified Resins in Sulfuric and Hydrochloric Acid Media

Xu,

Yin,

Ning

et al. 2024

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Zirconium is recognized as one of the main impurities of the rare earth element scandium during purification. It presents significant challenges due to its similar chemical properties, making separating it difficult. This study used trialkyl phosphine oxide (TRPO) as a functional ligand, and the effects of carrier type and acidity on adsorption performance were first investigated. Among these, the novel extraction resin SiO2-P as a carrier for TRPO demonstrated more prominent separation performance in 0.2 M H2SO4 and 5 M HCl solutions. The kinetic and isotherm data were consistent with the pseudo-secondary kinetics and Langmuir model, respectively, and the adsorption process could be regarded as homogeneous monolayer adsorption subject to the dual effects of chemisorption and internal diffusion. In addition, thermodynamic analysis showed that the adsorption process of zirconium under the experimental conditions was a spontaneous endothermic process. Combined with the results of SEM-EDS, FT-IR, and XPS analyses, scandium and zirconium were successfully adsorbed by the resin and uniformly distributed on its surface, and the greater affinity of the P=O groups on the resin for zirconium was the critical factor contributing to the separation of scandium and zirconium. Finally, scandium and zirconium in sulfuric acid and hydrochloric acid media were extracted and separated by column experiments, and the purity of scandium could reach 99.8% and 99.99%, respectively.

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Nd(III) and Dy(III) extraction from discarded NdFeB magnets using TOPO-based hydrophobic eutectic solvents

Cited by 2 publications

References 57 publications

Rapid and highly efficient removal of aqueous perfluorooctanoic acid using deep eutectic solvents for sustainable water remediation: An integrated experimental-modeling approach

Rapid and highly efficient removal of aqueous perfluorooctanoic acid using deep eutectic solvents for sustainable water remediation: An integrated experimental-modeling approach

Study of the Adsorption and Separation Behavior of Scandium and Zirconium by Trialkyl Phosphine Oxide-Modified Resins in Sulfuric and Hydrochloric Acid Media

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