Sorption of Rare Earth Metal Ions (La(III), Nd(III) and Er(III)) using Cellulose - Archive ouverte HAL Accéder directement au contenu
Article Dans Une Revue Current Applied Polymer Science Année : 2017

Sorption of Rare Earth Metal Ions (La(III), Nd(III) and Er(III)) using Cellulose

(1, 2) , (3) , (1) , (1) , (1) , (2)
1
2
3

Résumé

Background: Rare earth elements, REEs, are used for many high-tech applications; the rarefaction of the resource requires developing methods for their recovery from low-grade sources and their recycling from waste materials. Sorption processes, including biosorbents, represent an interesting method for their recovery from dilute effluents. Objective: This work investigates the sorption of 3 REEs using a cheap, renewable biosorbents: microcrystalline cellulose (considered as a reference material for on-going research on chemically modified materials). Methods: Sorption properties are studied considering the effect of pH, the uptake kinetics, the sorption isotherms, the thermodynamic parameters, the recycling of the material and its reuse for successive sorption/desorption cycles. Results: Metal sorption increases with pH, uptake kinetics are relatively fast with an equilibrium reached within 3-4 hours. The kinetic profiles are well fitted by the pseudo-second order rate equation. Maximum sorption capacity reaches 31-53 mg metal g-1, and the Langmuir equation fits well sorption isotherms. The reaction is endothermic and spontaneous. Metal ions can be readily desorbed with 0.5 M HNO3 solutions and the sorbent can be recycled for at least 4 cycles of sorption/desorption with limited decrease in performance (less than 3 %). FTIR and XRD analyses contribute to the characterization of the material and the interpretation of sorption mechanism. Conclusion: Microcrystalline cellulose has low sorption capacities for La(III), Nd(III), and Er(III); however, this renewable resource with high effectiveness in terms of recycling and re-use is a promising support for metal recovery.
Fichier non déposé

Dates et versions

hal-02915421 , version 1 (14-08-2020)

Identifiants

Citer

Ahmed Galhoum, Asem Atia, Ahmad Tolba, Said Mohamady, Sally Mohammed, et al.. Sorption of Rare Earth Metal Ions (La(III), Nd(III) and Er(III)) using Cellulose. Current Applied Polymer Science, 2017, 1 (1), pp.96-106. ⟨10.2174/2452271601666170301145759⟩. ⟨hal-02915421⟩
34 Consultations
0 Téléchargements

Altmetric

Partager

Gmail Facebook Twitter LinkedIn More