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Recovery of rare earth elements from Dicranopteris dichotoma by an enhanced ion exchange leaching process
Abstract : An original process aiming at selectively extracting REEs from the hyperaccumulator plant Dicranopteris dichotoma was developed. This process relies on an enhanced ion exchange leaching step carried out in 0.5 M nitric acid solution. Once ion exchange resin is transferred into a column, REEs purification is carried out by percolating successively three solutions through resin bed: two washing steps, with water and 0.75 M nitric acid to remove competing ions and one elution step using 3 M nitric acid. These operating conditions led to 81.4% REEs purity and 78% recovery.
Mots-clés :
Ion exchange
Hyperaccumulator plant
https://hal.univ-lorraine.fr/hal-01934580
Déposant : Marie-Odile Simonnot <>
Soumis le : lundi 26 novembre 2018 - 09:34:10
Dernière modification le : mardi 26 mai 2020 - 02:56:50
Déposant : Marie-Odile Simonnot <>
Soumis le : lundi 26 novembre 2018 - 09:34:10
Dernière modification le : mardi 26 mai 2020 - 02:56:50
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