Investigational Study On Removal Of Chromium Using The Mixture Of Bagasse And Coal Ashes

Abstract

Heavy metal pollution has become one of the most important problems today and the use of low cost methods for the removal of heavy metals from industrial effluent has been widely investigated. Cr (VI) is one of the highly toxic metals entire into the environment from mining, leather tanning, electroplating, textile industry, production of steel and other metal alloys etc. The efficiency of the mixture of bagasse and coal ash for the removal of Cr (VI) ions from the aqueous solution has been studied. The batch adsorption experiments have been carried out to optimize the dependent parameters like pH, initial Cr (VI) ion concentration, adsorbent dosage and equilibrium contact time on the adsorption process. Adsorption process and the extent of adsorption are dependent on the physical and chemical characteristics of adsorbent, adsorbate and the experimental conditions. The maximum metal adsorption was found to occur at initial pH 2. The adsorption process was well fitted with Langmuir and Freundlich isotherm models and the results found that adsorption process is irreversible in nature.