[article]
| Titre : |
Adsorptive removal of Ni2+ from aqueous solution by low cost cellulosic adsorbent-adsorption kinetics and isotherm study |
| Type de document : |
texte imprimé |
| Auteurs : |
Sultan Alam, Auteur ; Noor-ul-Amin, Auteur ; Najeeb-ur-Rehman, Auteur ; Azmat Ullah, Auteur |
| Année de publication : |
2013 |
| Article en page(s) : |
p. 104-112 |
| Note générale : |
Bibliogr. |
| Langues : |
Anglais (eng) |
| Catégories : |
Absorbants et adsorbants
CelluloseLa cellulose est un glucide constitué d'une chaîne linéaire de molécules de D-Glucose (entre 200 et 14 000) et principal constituant des végétaux et en particulier de la paroi de leurs cellules.
Cinétique chimique
Coefficient de partage (chimie)
Isotherme d'adsorption
|
| Index. décimale : |
668.1 Agents tensioactifs : savons, détergents |
| Résumé : |
Adsorptive removal of Ni2+ from aqueous solution by low cost cellulosic adsorbent was investigated with respect to adsorption kinetics and adsorption isotherm. Adsorbent was characterized by BET surface area, SEM, EDX, FTIR and Zeta potential technique and reported earlier. The surfaces contain carbonyl and hydroxyl functional groups, which act as binding sites for Ni2+ ion. Adsorption kinetics of Ni2+ was tested by first order, Elovich, parabolic diffusion and Bangham kinetic equations. Thermodynamic parameters like ?H?, ?S? and ?G? were calculated from the kinetic data. The rate of adsorption was high at high adsorption temperature. Positive values of ?S? reflect some structural exchange among the active site of the adsorbent and metal ion. Freundlich, Langmuir, Temkin isotherms and distribution coefficient were found fit to the adsorption isotherm data.. |
| Note de contenu : |
- EXPERIMENTAL : Materials and instruments - Characterization - Adsorbent preparation - Adsorption kinetic - Adsorption isotherm study
- RESULTS AND DISCUSSION : Characterization - Adsorption kinetics - Adsorption isotherm study |
| DOI : |
10.3139/113.110229 |
| Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=17888 |
in TENSIDE, SURFACTANTS, DETERGENTS > Vol. 50, N° 2 (03-04/2013) . - p. 104-112
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Adsorptive removal of Ni2+ from aqueous solution by low cost cellulosic adsorbent-adsorption kinetics and isotherm study in TENSIDE, SURFACTANTS, DETERGENTS, Vol. 50, N° 2 (03-04/2013)
