ADSORPTIVE REMOVAL OF HEAVY METAL CHROMIUM FROM AQUEOUS MEDIUM USING MODIFIED NATURAL ADSORBENT

One of the serious environmental issues is the presence of toxic heavy metals contaminants in water bodies because of discharge of untreated heavy metals due to urbanization, combustion byproducts, automobile emissions, mining activities. Chromium is widely used in many industries and usually present in high concentration in the aqueous medium. This study involved the investigation of the adsorption of hexavalent form of the heavy metal (Cr) by modified corncob. The study demonstrated that the corncob has a moderate potential to remove heaxavalent chromium. The equilibrium data of adsorption very well fitted into the models and the maximum loading capacity was obtained from adsorption isotherms by applying the Langmuir model.