Methyl Red Dye Removal From Aqueous Solution by Adsorption on Rice Hulls

Abstract

In the present study agricultural waste, grounded rice hulls was examined as sorbent material for removing methyl red dye from solutions. Batch studies were performed to evaluate various parameters effects:( time of contact, pH, the initial concentration of the dye, adsorbent dose and particle size of the sorbent material), on adsorption capacity of the dye. Rice hulls was found to be effective in removing methyl red dye and equilibrium was reached in (100 min) time. The amount of dye adsorbed was found to be pH dependant and it increases as the dose of rice hull and initial dye concentration increasing. The capacity of adsorption decreases with increasing of particle size of the rice hulls. The equilibrium isotherms were examined using Langmuir and freundlich isotherms by using the coefficients of correlation. sorption data were well described by Langmuir and freundlich models. The outcomes of the study showed that rice hulls could be a good alternative material rather than another more costly adsorbent materials intended for dye removal.