Cysteine-montmorillonite composites for heavy metal cation complexation: A combined experimental and theoretical study - Sorbonne Université
Article Dans Une Revue Chemical Engineering Journal Année : 2017

Cysteine-montmorillonite composites for heavy metal cation complexation: A combined experimental and theoretical study

Résumé

Green composites based on montmorillonite (Mt) and cysteine, were prepared for heavy metal removal. A comparison between the adsorption properties of the resulting hybrid inorganic-organic materials and the pure montmorillonite was carried out for the following heavy metal cations Cd2+, Hg2+, Pb2+, Co2+ and Zn2+. It appears that the adsorption capacity is higher on the composite. Moreover, in release experiments, the heavy metal cations are more strongly retained by the hybrid material. Interactions between the hybrid clay mineral and the inorganic hosts were studied by spectroscopic methods such as solid-state NMR (Nuclear Magnetic Resonance) and FTIR (Fourier Transform Infrared). The experimental data were in agreement with the theoretical periodic DFT (Density Functional Theory) calculations where a molecular picture of the adsorption complex is proposed.

Domaines

Chimie
Fichier principal
Vignette du fichier
El_Adraa_Cysteine-Montmorillo.pdf (1.74 Mo) Télécharger le fichier
Origine Fichiers produits par l'(les) auteur(s)
Loading...

Dates et versions

hal-01490419 , version 1 (15-03-2017)

Identifiants

Citer

Khaled El Adraa, Thomas Georgelin, Jean-François Lambert, Farouk Jaber, Frederik Tielens, et al.. Cysteine-montmorillonite composites for heavy metal cation complexation: A combined experimental and theoretical study. Chemical Engineering Journal, 2017, 314, pp.406 - 417. ⟨10.1016/j.cej.2016.11.160⟩. ⟨hal-01490419⟩
223 Consultations
657 Téléchargements

Altmetric

Partager

More