Adsorption of Cd(II) Ions from Aqueous Solutions by Lalang (Imperata cylindrica) Leaf Powder: Effect of Physicochemical Environment

Research Article

**Adsorption of Cd(II) Ions from Aqueous Solutions by Lalang (Imperata cylindrica) Leaf Powder: Effect of Physicochemical Environment**

M.A.K. Megat Hanafiah, M.Z.A. Yahya, H. Zakaria and S.C. Ibrahim

The adsorption of cadmium from aqueous solution with a plant waste particularly Lalang or Imperata cylindrica (IC) leaf powder was investigated. The effect of various operating variables mainly adsorbate concentration, adsorbent dose, adsorbent size, temperature and pH was studied. The adsorption of Cd²⁺ ions increased with increase in pH, temperature, adsorbent dose and decrease in adsorbent size. Adsorption was rapid and occurred within 15 min for cadmium concentration of 1 mg L^-1 and 30 min for cadmium concentrations of 2 and 5 mg L^-1. The kinetic process of Cd²⁺ adsorption onto IC leaf powder was found to fit the pseudo-second-order rate equation.

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M.A.K. Megat Hanafiah, M.Z.A. Yahya, H. Zakaria and S.C. Ibrahim, 2007. Adsorption of Cd(II) Ions from Aqueous Solutions by Lalang (Imperata cylindrica) Leaf Powder: Effect of Physicochemical Environment. Journal of Applied Sciences, 7: 489-493.

DOI: 10.3923/jas.2007.489.493

URL: https://scialert.net/abstract/?doi=jas.2007.489.493

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Authors

M.A.K. Megat Hanafiah

M.Z.A. Yahya

H. Zakaria

S.C. Ibrahim

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Research Article

**Adsorption of Cd(II) Ions from Aqueous Solutions by Lalang (Imperata cylindrica) Leaf Powder: Effect of Physicochemical Environment**

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