Cadmium(II) recovery from hydrochloric acid solutions using Amberlite XAD-7 impregnated with a tetraalkyl phosphonium ionic liquid - IMT Mines Alès Access content directly
Journal Articles Reactive and Functional Polymers Year : 2011

Cadmium(II) recovery from hydrochloric acid solutions using Amberlite XAD-7 impregnated with a tetraalkyl phosphonium ionic liquid

Abstract

Cyphos (R) IL-101 (tetraalkyl phosphonium ionic liquid, IL) was immobilized in a synthetic resin (Amberlite XAD-7) for preparing an solvent impregnated resin (SIR). This SIR was tested for Cd(II) sorption in HCl solutions. Optimum sorption occurs for HCl concentrations close to 3-4 M through an ion exchange mechanism involving phosphonium cation and CdCl(4)(2-). Sorption capacity increased with IL loading, though a fraction of the IL remained inactive, being bound to the polymer support. Sorption capacity is poorly influenced by metal ions that do not form chloroanionic species. Uptake kinetics are controlled by the resistance to intraparticle diffusion. The intraparticle diffusivity coefficient increased with temperature, initial metal concentration but decreased with increasing IL loading (probably due to a decrease of the interfacial area and a slow diffusion of metal ions in the organic phase that fills the porous network). Metal desorption and resin recycling can be performed using nitric acid (0.1 M) with sorption and desorption performances maintained for at least five cycles.
Fichier principal
Vignette du fichier
cadmium-ii-recovery-from-hydrochloric-acid-solutions-1.pdf (3.67 Mo) Télécharger le fichier
Origin Files produced by the author(s)

Dates and versions

hal-02949483 , version 1 (26-06-2024)

Identifiers

Cite

R. Navarro, V. Gallardo, M. Martinez, E. Guibal, A. Arias, et al.. Cadmium(II) recovery from hydrochloric acid solutions using Amberlite XAD-7 impregnated with a tetraalkyl phosphonium ionic liquid. Reactive and Functional Polymers, 2011, 71 (11), pp.1059-1070. ⟨10.1016/j.reactfunctpolym.2011.07.008⟩. ⟨hal-02949483⟩
12 View
0 Download

Altmetric

Share

Gmail Mastodon Facebook X LinkedIn More