Volume No. 5 Issue No.: 2 Page No.: 262-278 October-December 201

 

ADSORPTION CHARACTERISTICS OF Cu (II) IONS IN AQUEOUS SOLUTIONS USING Mangifera indica (MANGO) LEAF BIOSORBENTS

 

V. S. Sethu*, K. S. Goey, F. R. Iffah, C. M. Khoo and J. M. Andresen

Department of chemical and environmental engineering, Faculty of engineering, University of Nottingham Malaysia Campus, Jalan Broga, Semenyih, Selangor (MALAYSIA)

 

Received on : July 06, 2010

 

ABSTRACT

 

Adsorption of Cu(II) ions onto a non-conventional plant biosorbents, mango leaf powder (MLP) developed from mature leaves of mango (Mangifera indica), was investigated in batch adsorption experiments. Process parameters which include initial metal ion concentration, adsorbent dosages, initial pH and temperature of solution were varied in order to evaluate their influence on the adsorption process. The results obtained indicate that the adsorption of Cu(II) on MLP is better at higher metal ion concentrations and lower adsorbent dosages. The maximum adsorption capacity was found to be 206.85 mg/g, which was obtained at 100 mg/L Cu(II) ion concentration and 0.4 g/L of MLP dosage. pH 4.5 was chosen as the optimum pH and better adsorption occurred at higher solution temperatures. Besides that, the adsorption of Cu(II) on MLP was found to fit the Freundlich isotherm.

 

Keywords : Biosorption, Mango leaf powder, Cu (II) ions, Heavy metals, Wastewater

 

 

BACK