Pilot scale application of 226Ra-contaminated soil leaching remediation DOI
Juncheng Han,

Guangming Xu,

Kexin Shao

et al.

Chemosphere, Journal Year: 2024, Volume and Issue: 369, P. 143817 - 143817

Published: Dec. 1, 2024

Language: Английский

Recovery of iron as hematite and separation of trivalent lanthanide ions from spent hard disk magnet leach liquor using [P66614][Cy272] ionic liquid DOI Creative Commons
Prasanjit Das, Binapani Behera, Kali Sanjay

et al.

RSC Advances, Journal Year: 2025, Volume and Issue: 15(2), P. 912 - 923

Published: Jan. 1, 2025

The widespread use of neodymium-iron-boron (NdFeB) magnets has raised concerns about the environmental impact their disposal, prompting need for sustainable recycling strategies. Traditional solvents used in are toxic and flammable, making them risky to use. Ionic liquids safer greener options with low vapor pressure, high stability, less flammability. This study introduces an eco-friendly approach utilizing [P66614][Cy272] ionic liquid selectively extract iron recover rare earth elements (REEs) from leach liquor waste NdFeB magnets. Pre-treatment processes enhanced metal concentration before leaching, including demagnetization, grinding, screening. Optimal leaching conditions: 2 mol L-1 HCl, 80 °C, 10 g pulp density, 90 minutes, resulted complete REEs (Dy, Pr, Nd), iron, boron. Using 0.01 liquid, 100% was removed minimal co-extraction (∼4%). Precipitation leading Fe2O3 (hematite) after calcination is verified through XRD SEM-EDS analyses. also enabled 81.1% recovery HCl liquor, reducing neutralization needs operational costs. Subsequent separation using demonstrated selectivity, achieving factors 18.55 (Dy/Pr) 15.52 (Dy/Nd) at pH 2.03. Dy(iii) successfully separated solutions counter-current extraction, leaving 6.0 mg raffinate, requiring two extraction stages a : 3 organic-to-aqueous phase (O/A) ratio. reusability further sustainable, closed-loop process. highlights potential integrating into green technologies magnet recycling, ensuring resource while minimizing impact.

Language: Английский

Citations

1
Recent progress in ionic liquid-based green emulsion liquid membranes for separation of industrial discharges DOI

Huma Warsi Khan,

A. Vijaya Bhaskar Reddy, Berihun Mamo Negash

et al.

Chemical Engineering Journal, Journal Year: 2024, Volume and Issue: 496, P. 154309 - 154309

Published: July 27, 2024

Language: Английский

Citations

6
A bibliometric and comprehensive review on the use of ionic liquids for sustainable separation of rare earth elements DOI

Huma Warsi Khan,

Berihun Mamo Negash, Nur Insyirah Zulkifli

et al.

Journal of Industrial and Engineering Chemistry, Journal Year: 2024, Volume and Issue: unknown

Published: Oct. 1, 2024

Language: Английский

Citations

1
Extraction of rare earth elements from ion adsorption clay using bio-based ionic liquid via COSMO-RS: computational and experimental validation DOI

Junaid Afridi,

Mohd Dzul Hakim Wirzal,

Choi Yee Foong

et al.

Journal of Rare Earths, Journal Year: 2024, Volume and Issue: unknown

Published: Nov. 1, 2024

Language: Английский

Citations

0
Tempo-Oxidized Cellulose Nanocrystal/Magnetic Bentonite Composite for Efficient Gd(Ⅲ) Removal DOI
Chenglong Zou,

Qun Wu,

Yan Zhou

et al.

Published: Jan. 1, 2024

Citations

0
Pilot scale application of 226Ra-contaminated soil leaching remediation DOI
Juncheng Han,

Guangming Xu,

Kexin Shao

et al.

Chemosphere, Journal Year: 2024, Volume and Issue: 369, P. 143817 - 143817

Published: Dec. 1, 2024

Language: Английский

Citations

0