Removal of Yellow 2G dye from aqueous solutions using activated carbon prepared from mosambi and cotton an agricultural waste

Abstract

Adsorption of Yellow 2G from aqueous solution on the surface of Activated carbon of mosambi peel (ACMP) and stem of cotton (ACCS) was accomplished under the optimize conditions of pH, adsorbent dose, initial concentration of dye and contact time. Spectrometric technique was used for the measurements of concentration of dye before and after adsorption. Colour was effectively been removed at all selected pH, and the increase in activated carbon dose showed an increase in the removal's percentage. The result shows that the removal efficiency increases with adsorbents dose increases and at neutral pH. The equilibrium data fit well with both Langmuir and Freundlich models of adsorption. The value of separation factor R L for ACMP and ACCS was found to be 0.135 and 0.080 respectively suggesting that the isotherm to be favorable at the concentration studied. The results of findings are discussed to reflect the removal efficiency of adsorbent.