Abstract
Activated carbon has been prepared from Tectona grandis leaves and characterized. This carbon is ready to sorb metal ions from its aqueous solution. It has been noted that a increasing the carbon dose with constant Ni (II) ion solution concentration, or a rise in the Ni (II) ion solution concentration with constant carbon concentration resulted in a higher and lower nickel uptake per unit weight of carbon respectively. The Langmuir and Freundlich isotherm models of this adsorption system were studied and reported. The surface adsorption capability (Q0 ) calculated from Langmuir isotherm was 38.025 mg Ni(II) g”1 at initial hydrogen ion concentration of 20 mg/l at 305 K for the particle size 150 300ìm. Dynamics of the system was studied with linearised forms of Lagergren, Ho and Webber Morris models.
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