Lalitha, PRenugadevi, N2017-02-152017-02-152011https://ir.avinuty.ac.in/handle/avu/1392Removal of heavy metals from industrial wastewater is of primary importance because they are not only causing contamination of water bodies and are also toxic to many life forms. In recent years various heavy metals are removed from solution using natural low cost adsorbents which are economically viable. The present study is aimed at removing hexavalent chromium from aqueous solution using activated carbon from Areca catechu. The effect of variation of initial concentration of Cr (VI) solution, variation of pH and dosage of adsorbent on the adsorption potential of Cr(VI) have been studied. The results of the study have been interpreted in terms of Langmuir adsorption isotherm and Freundlich adsorption isotherm. The adsorption of Cr (VI) onto activated carbon from Areca catechu was found to be concentration dependent. The maximum removal of Cr (VI) was observed at pH 2. The adsorption Cr(VI) using activated carbon prepared from the Areca catechu shell followed Langmuir and Freundlich adsorption isotherms.