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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
Diclofenac
Adsorption
LDHs
Capacity |
| 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
1944-398 |
| Collection(s) : | Articles
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