Adsorption of hexavalent chromium by activated charcoal prepared from phyllanthus emblica tree bark

Abstract

The paper deals with the study of for the adsorption of Cr (VI) using low-cost adsorbent activated charcoal prepared from Phyllanthus Emblica tree bark (AC-PETB). Batch adsorption method has been employed for the removal of Chromium (VI). The various parameters like adsorption dose, contact time, pH, etc have been studied in batch adsorption method. Langmuir and Freundlich's isotherms are used for the evaluation of equilibrium adsorption studies. To enhance the adsorption capacity of activated carbon, it is loaded with Sodium lauroyl sarcosinate and 2-Acrylamido-2-methylpropane sulfonic acid and compared the adsorption capacity. The maximum removal efficiency for the removal of Cr (VI) found to be at pH 2. Activated charcoal loaded with 2-Acrylamido-2-methylpropane sulfonic acid found to be most effective for the removal of Cr (VI) compared with the charcoal loaded with Sodium lauroyl sarcosinate and virgin activated charcoal.