DOAJ Open Access 2024

Leaching and recycling of NdFeB permanent magnets using ionic non-toxic hydrotropes instead of extractants

Asmae El Maangar Clément Fleury Stéphane Pellet-Rostaing Thomas Zemb

Abstrak

We show hereby that recycling of NdFeB permanent magnets by selective leaching and precipitation is possible, using an electrolyte as hydrotrope, thus avoiding the need of any specific extractant molecules. We analyse the yield of the extractant-free process and show that the non toxic formulation of Sodium Salicylate and ethylacetate used as diluent and choosing the optimal tie-line in a ternary phase diagram allows extraction using any type of acid in the aqueous phase. Iron is well separated from rare earths and the product can be recovered directly form the fluid used in separation by oxalic acid precipitation.

Topik & Kata Kunci

Technology Chemical technology

Penulis (4)

Asmae El Maangar

Clément Fleury

Stéphane Pellet-Rostaing

Thomas Zemb

Format Sitasi

APA MLA BibTeX

Maangar, A.E., Fleury, C., Pellet-Rostaing, S., Zemb, T. (2024). Leaching and recycling of NdFeB permanent magnets using ionic non-toxic hydrotropes instead of extractants. https://doi.org/10.3389/fceng.2024.1420008

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Informasi Jurnal

Tahun Terbit: 2024
Sumber Database: DOAJ
DOI: 10.3389/fceng.2024.1420008
Akses: Open Access ✓