Adsorption and Recovery of Neodymium and Praseodymium from Magnet Waste NdFeB Using a Novel Pyridine Schiff Base Compound

ChemistrySelect, Journal Year: 2025, Volume and Issue: 10(1)

Published: Jan. 1, 2025

Abstract This study presents a novel approach for synthesizing (pyridine‐2,5‐diylbis(azaneylylidene) bis(ethan‐1‐yl‐2‐ylidene))bis(benzene‐5,1,3‐triyl) tetrakis(4‐formylbenzoate) to address the growing demand and limited supply of Nd(III) Pr(III) metal ions. The material, created through Schiff base formation esterification, aims enhance recovery utilization efficiency from solutions. PYBE adsorbent selectively adsorbs these ions, its properties were confirmed using FTIR, SEM, TGA, ¹H NMR, ¹ 3 C mass spectrometry. Adsorption was tested under varying conditions, including pH, dosage, contact time, solution concentration, presence coexisting results followed pseudo‐second‐order kinetic model, with equilibrium isotherms well described by Langmuir, Temkin, Dubinin–Radushkevich models. demonstrated high sorption capacities—384.62 mg/g 357.14 at pH 6. Thermodynamic analysis revealed that adsorption process spontaneous endothermic. material also successfully recovered waste Neodymium‐Iron‐Boron (NdFeB) magnets, yielding high‐purity Nd₂O₃ Pr₆O₁₁. mechanism, driven chemisorption, aligned Langmuir D–R isotherm innovative demonstrates significant potential efficient rare earth recovery, addressing critical need sustainable resource management.

Language: Английский

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Leaching Characteristics of Rare-Earth Elements from Indonesian Ion-Adsorption Clay-Type Weathered Granite Ore Deposit

Journal of Sustainable Metallurgy, Journal Year: 2025, Volume and Issue: unknown

Published: Feb. 24, 2025

Language: Английский

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Computational and experimental study of terpolymers: spectroscopic, thermal, thermochemical, molecular property, and in silico toxicity analysis

Drug and Chemical Toxicology, Journal Year: 2025, Volume and Issue: unknown, P. 1 - 17

Published: Feb. 28, 2025

In this study, a comprehensive analysis of the CMA2OEM-co-DVB-co-AMPS (2-(bis(cyanomethyl)amino)-2-oxoethyl methacrylate-co-divinylbenzene-co-2-acrylamido-2-methyl-1-propanesulfonic acid) and CMA2OEM-co-DVB-co-VIM methacrylate-co-divinylbenzene-co-vinylimidazole) terpolymers was conducted. The structural chemical properties were examined using Fourier transform infrared (FT-IR) spectroscopy, frontier molecular orbital analysis, electrostatic potential (MEP) maps, 1H, 13C NMR thermochemistry surface maps (TCSM), toxicity assessments, physical properties, electron localization function (ELF), total (ESP) analyses. silico analyses, quantitative structure–activity relationship (QSAR) model used for Toxicity Estimation Software Tool (TEST) ProTox 3.0, web-based virtual laboratory, oral prediction. estimates TEST showed that both exhibited low profiles. Oral prediction emphasizes may pose greater risk compared to CMA2OEM-co-DVB-co-AMPS. addition, experimental thermal characterization these also performed. These analyses have provided significant insights into applications functional terpolymers.

Language: Английский

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Adsorption and separation of zirconium and hafnium from sulfate media by a conveniently synthesized (2,4,4-trimethylpentyl)(2-methylpropyl)phosphinic acid functionalized Merrifield Resin: A combined study of experiments and DFT calculations

Journal of Chromatography A, Journal Year: 2025, Volume and Issue: unknown, P. 465894 - 465894

Published: March 1, 2025

Language: Английский

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Nanohydrometallurgy with Superparamagnetic Nanoparticles: A Sustainable Solution for Critical Metal Retrieval from Phosphogypsum

Journal of Sustainable Metallurgy, Journal Year: 2025, Volume and Issue: unknown

Published: April 7, 2025

Language: Английский

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Pretreatment strategies for enhancing rare earth elements leaching efficiency from phosphogypsum - A review with a focus on hydrometallurgical processes

Journal of Rare Earths, Journal Year: 2025, Volume and Issue: unknown

Published: April 1, 2025

Language: Английский

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Separation and purification of heavy rare earth elements by a silica/polymer-based β-aminophosphonic acid resin from chloride media

Separation and Purification Technology, Journal Year: 2024, Volume and Issue: 354, P. 129342 - 129342

Published: Aug. 24, 2024

Language: Английский

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Eco-friendly synthesized zeolitic imidazolate framework-8 enables one-step cerium recovery from water

Chemical Engineering Journal, Journal Year: 2024, Volume and Issue: 500, P. 157456 - 157456

Published: Nov. 1, 2024

Language: Английский

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Separation and Purification of Heavy Rare Earth Elements by a Silica/Polymer-Based Β-Aminophosphonic Acid Resin from Chloride Media

Published: Jan. 1, 2024

Language: Английский

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Novel Organomineral Material Containing an Acylpyrazolone Functionalized Ionic Liquid for the Extraction and Separation of Rare Earth Elements

Chemistry, Journal Year: 2024, Volume and Issue: 6(5), P. 1133 - 1145

Published: Sept. 27, 2024

4-Acylpyrazolones are important ligands in analytical chemistry and technologies used for the separation concentration of various metals. We have proposed a novel method obtaining material that consists covalently immobilized functionalized ionic liquid on surface mineral carrier featuring coordination-active fragment 4-acylpyrazolone. For its synthesis, we introduced strategy based quaternization azolyl groups from 3-(1H-imidazol-1-yl)propyl silica with an alkylating reagent containing 4-acylpyrazolone motif-4-(6-bromohexanoyl)-5-methyl-2-phenyl-2,4-dihydro-3H-pyrazol-3-one. This covalent immobilization preserves 1,3-dioxo fragment, which ensures effective binding metal ions. The success this functionalization has been confirmed by IR 13C NMR spectroscopy data, as well thermogravimetric analysis. overall functional capacity was found to be 0.3 mmol/g. potential synthesized organomineral concentrate five rare earth elements (REEs) representing cerium (Eu(III), Sm(III)) yttrium (Gd(III), Dy(III), Er(III)) demonstrated. It shown during extraction multicomponent systems, both under static dynamic preconcentration conditions, there is competitive influence analytes, their can evaluated conditions output curves calculated distribution coefficients. systems where Kd > 1.8, quantitative performed mode sorption selected conditions.

Language: Английский

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