Terephthalaldehyde–Phenolic Resins as a Solid-Phase Extraction System for the Recovery of Rare-Earth Elements - Université de Montpellier Accéder directement au contenu
Article Dans Une Revue Polymers Année : 2022

Terephthalaldehyde–Phenolic Resins as a Solid-Phase Extraction System for the Recovery of Rare-Earth Elements

Résumé

Rare-earth elements (REEs) are involved in most high technology devices and have become critical for many countries. The progress of processes for the extraction and recovery of REEs is therefore essential. Liquid–solid extraction methods are an attractive alternative to the conventional solvent extraction process used for the separation and/or purification of REEs. For this purpose, a solid-phase extraction system was investigated for the extraction and valorization of REEs. Ion-exchange resins were synthesized involving the condensation of terephthalaldehyde with resorcinol under alkaline conditions. The terephthalaldehyde, which is a non-hazardous aromatic dialdehyde, was used as an alternative to formaldehyde that is toxic and traditionally involved to prepare phenolic ion-exchange resins. The resulting formaldehyde-free resole-type phenolic resins were characterized and their ion-exchange capacity was investigated in regard to the extraction of rare-earth elements. We herein present a promising formaldehyde and phenol-free as a potential candidate for solid–liquid extraction REE with a capacity higher than 50 mg/g and the possibility to back-extract the REEs by a striping step using a 2 M HNO3 solution.

Domaines

Chimie
Fichier principal
Vignette du fichier
polymers-14-00311.pdf (2.73 Mo) Télécharger le fichier
Origine Fichiers éditeurs autorisés sur une archive ouverte

Dates et versions

hal-03608662 , version 1 (12-07-2022)

Licence

Identifiants

Citer

Ruth Oye Auke, Guilhem Arrachart, Romain Tavernier, Ghislain David, Stéphane Pellet-Rostaing. Terephthalaldehyde–Phenolic Resins as a Solid-Phase Extraction System for the Recovery of Rare-Earth Elements. Polymers, 2022, 14 (2), pp.311. ⟨10.3390/polym14020311⟩. ⟨hal-03608662⟩
53 Consultations
48 Téléchargements

Altmetric

Partager

Gmail Mastodon Facebook X LinkedIn More