kinetic, equilibrium and mechanistic studies of nickel adsorption on activated corchorus olitorius l- leaves
S Arivoli,S Subasri,V Marimuthu,N Mani
Published in International Journal of Advanced Research in Chemistry and Chemical Engineering
ISSN: xxxx-xxx Impact Factor:xx Volume:1 Issue:1 Year: 14 November,2014 Pages:11-23
Abstract
An adsorbent prepared from Corchorus Olitorius L Leaves, by acid treatment was tested for its efficiency in removing metal ion. The process parameters studied include agitation time, initial Nickel ion concentration, adsorbent dose, pH and temperature. The adsorption followed second order reaction equation and the rate is mainly controlled by intra-particle diffusion. Freundlich and Langmuir isotherm models were applied to the equilibrium data. The adsorption capacity (Qm) obtained from the Langmuir isotherm plot at an initial pH of 6.5 and at 30, 40, 50, 60 ± 0.5 0C. The influence of pH on metal ion removal was significant and the adsorption was increased with increase in temperature. A portion of the nickel ion was recovered from the spent ACONC using 0.1M HCl.
Kewords
Activated Corchorus Olitorius L Leaves Nano Carbon (ACONC), Nickel ion, Adsorption isotherm, Equilibrium, Thermodynamic parameters, Intra-particle dif
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