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Titre: Removal of diclofenac from water with calcined ZnAlFe-CO 3 layered double hydroxides: Effect of contact time, concentration, pH and temperature
Auteur(s): Ghemit, Rima
Boutahala, Mokhtar
Kahoul, Abdelkrim
Mots-clés: Pharmaceutical
Date de publication: 30-jui-2018
Collection/Numéro: Desalination and Water Treatment;83 (2017) 75–85 July
Résumé: In this study, ZnAlFe-CO3 layered double hydroxide (LDH), with a Zn to (Al+Fe) molar ratio of 2 and an Al to Fe molar ratio of 1:1, was successfully synthesized and its calcined product (ZnAlFe-C) was obtained. The prepared adsorbents ZnAlFe-CO3 and ZnAlFe-C were characterized by FTIR, XRD, TGA/DTA and BET textural analysis. Batch sorption studies were conducted to investigate adsorption of diclofenac from water onto both adsorbents. The results show that ZnAlFe-C can be used as an effective adsorbent and its sorption capacity is higher than that of ZnAlFe-CO3.The adsorption processes can be well described by the pseudo-second- order kinetic model. The adsorption data are fitted well with the Langmuir isotherm equation. The maximum adsorption capacity is 641.48 mg/g. The thermodynamic parameters were calculated. The negative ΔG0 and ΔH0 indicate that the adsorption processes are spontaneous and exothermic in nature.
URI/URL: http://dspace.univ-setif.dz:8888/jspui/handle/123456789/2521
ISSN: 1944-3994
Collection(s) :Articles

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