Recovery of rare earth elements from coal flyash using deep eutectic solvents as leachants and precipitating as oxalate or fluoride

Hydrometallurgy, Journal Year: 2022, Volume and Issue: 214, P. 105952 - 105952

Published: Aug. 24, 2022

Language: Английский

---

A Comparative Study on Recent Developments for Individual Rare Earth Elements Separation

Processes, Journal Year: 2023, Volume and Issue: 11(7), P. 2070 - 2070

Published: July 11, 2023

Facilitating the demands of modern society, namely, smartphones, televisions, electric vehicles, and high-stability aircraft structures, requires low-cost high-performance materials a corresponding change in approach needed to design them. Rare earth elements (REEs) play significant role achieving these objectives by adding small amounts alloys, thereby enhancing material properties. Despite being more abundant than precious metals, 17 REEs exhibit subtle variations their chemical physical characteristics. Thus, separation is still crucial for industrial applications. There need develop effective efficient methods. Adding challenge complexity sources related materials. large-scale production REE difficult. Current processing techniques can be categorized into pre-treatment, beneficiation, separation, refining. Researchers have developed various technologies encompassing chemical, physical, biological methods, focusing on economic environmental considerations. However, not all approaches scaled up mass production. This article focuses feasible strategies such as precipitation crystallization, oxidation reduction, ion exchange, adsorption, solvent extraction, membrane separation. Further research traditional methods potentially revolutionize dynamics REEs.

Language: Английский

---

Highly selective extraction of scandium(III) from rare earth elements using quaternary ammonium based ionic liquids: Experimental and DFT studies

Separation and Purification Technology, Journal Year: 2023, Volume and Issue: 334, P. 126038 - 126038

Published: Dec. 15, 2023

Language: Английский

---

Recovery of rare earths in different media with novel dicarboxylate based ionic liquid and application to recycle SmCo magnets

Hydrometallurgy, Journal Year: 2022, Volume and Issue: 210, P. 105844 - 105844

Published: Feb. 28, 2022

Language: Английский

---

Extraction and separation studies of Nd/Fe and Sm/Co by deep eutectic solvent containing Aliquat 336 and glycerol

Journal of Chemical Technology & Biotechnology, Journal Year: 2023, Volume and Issue: 98(7), P. 1631 - 1641

Published: March 28, 2023

Abstract BACKGROUND In today's technologically developed society, the demand for materials with enormous applications in electrical and electronic devices has been sharply increasing. Rare earths, like neodymium samarium, are two of these high‐demand materials. Their widespread use as permanent magnets association some transition metals (like iron cobalt) created need to design novel environmentally benign pathways their extraction separation. RESULTS The present work demonstrates a deep eutectic solvent (DES) synthesized from Aliquat 336 Glycerol diluted kerosene extractive separation studies Nd/Fe Sm/Co nitrate medium. variations thermophysical attributes density, dielectric permittivity, refractive index) provide insight on behavior, DES efficiency, feasibility. Effects variable experimental conditions, pH, mixing time, temperature, molarity, concentration, phase volume ratio, have examined. Complete separations Nd(III)/Fe(III) Sm(III)/Co(III) were achieved under multiple conditions. Using organic aqueous ratio (O/A) = 2:1 (pH 2, [NaNO 3 ] 3.5 M, [DES] 0.2 T 298 K), highest percentage Nd(III) was found be 93.8%, O/A 4:1(pH 2 M NaNO , DES, that Sm(III) 93.6%. Stripping 100% Nd Sm using 0.6 HCl. CONCLUSION Ali‐Gly showed selectivity Nd, then Sm, followed by Fe. It did not extract cobalt considered A lower time consumption, room temperature separation, low concentration used major findings research work. © 2023 Society Chemical Industry (SCI).

Language: Английский

---

Extraction of Lanthanides(III) from Aqueous Nitric Acid Solutions with Tetra(n-octyl)diglycolamide into Methyltrioctylammonium Bis(trifluoromethanesulfonul)imide Ionic Liquid and Its Mixtures with Molecular Organic Diluents

Minerals, Journal Year: 2023, Volume and Issue: 13(6), P. 736 - 736

Published: May 29, 2023

The extraction of lanthanides(III) from aqueous nitric acid solutions with tetra(n-octyl)diglycolamide into methyltrioctylammonium bis(trifluoromethanesulfonul)imide ([N1888][Tf2N]) ionic liquid and its mixtures molecular organic diluents is investigated in this study. This study also investigates the effect HNO3 concentration phase on Ln(III) ions. Subsequently, stoichiometry extracted complexes determined, mechanism a system [N1888][Tf2N] discussed. It shown that intragroup selectivity ions significantly higher when using than imidazolium-based [C4mim][Tf2N].

Language: Английский

---

Preparation of Yb–Sb co-doped Ti/SnO2 electrode for electrocatalytic degradation of sulfamethoxazole (SMX)

Chemosphere, Journal Year: 2023, Volume and Issue: 339, P. 139633 - 139633

Published: July 27, 2023

Language: Английский

---

Emerging Rare Earth Element Separation Technologies

European Journal of Inorganic Chemistry, Journal Year: 2024, Volume and Issue: unknown

Published: June 21, 2024

Abstract Rare earth elements are essential for numerous clean energy applications, yet their mining, separation, and processing pose significant environmental challenges. Traditional separation processes often result in ecological damage, highlighting the critical need innovative techniques that reduce impacts. This article reviews recent advancements rare technologies, with a particular focus on role of neutral organic compounds. It explores how these compounds change selectivity across series, offering promising strategies designing more effective element systems. Furthermore, points out research areas requiring additional investigation to improve sustainability processes.

Language: Английский

---

Extraction of Lanthanides(III) from Aqueous Nitric Acid Solutions with Tetra( n -Octyl)diglycolamide into Trioctylammonium Di-2-Ethylhexylsulfosuccinate Ionic Liquid and Its Mixtures with Molecular Organic Diluents

Solvent Extraction and Ion Exchange, Journal Year: 2025, Volume and Issue: unknown, P. 1 - 21

Published: Jan. 31, 2025

The extraction of lanthanides(III) from aqueous nitric acid solutions with tetra(n-octyl)diglycolamide into trioctylammonium di-2-ethylhexylsulfosuccinate ([N888H][SSu]) ionic liquid and its mixtures molecular organic diluents is studied. It showed that the efficiency selectivity Ln(III) TODGA [N888H][SSu] significantly higher than when using 1-butyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imide IL [C4mim][Tf2N] as a diluent. Additionally, in system [N888H][SSu], transfer SSu− ions phase occurs to much lesser extent Tf2N− systems [C4mim][Tf2N]. established increases added phase. synergistic effect arises due hydrophobicity extractable complexes formed by ligand anions compared those containing NO3− counterions. stoichiometry extracted determined, influence composition phase, nature solvent on considered.

Language: Английский

---

Critical metal extraction from spent battery cathodes and anticipated developments using next generation green solvents for achieving a net-zero future

Chemical Engineering Journal, Journal Year: 2025, Volume and Issue: unknown, P. 160324 - 160324

Published: Feb. 1, 2025

Language: Английский

---