Kinetic, Equilibrium and Mechanistic Studies of Nickel Adsorption on Acid Activated Ipomoea Carnea Leaves
Journal Title: Scholars Journal of Engineering and Technology - Year 2014, Vol 2, Issue 1
Abstract
An adsorbent prepared from Ipomoea carnea Leaves (AAIC), by acid treatment was tested for its efficiency in removing nickel 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 nickel ion removal was significant and the adsorption was increased with increase in temperature. A portion of the nickel ion was recovered from the spent AAIC using 0.1M HCl.
Authors and Affiliations
P. Pandian, S Arivoli, V Marimuthu, A Peter Pascal Regis
Keywords
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