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Comparative study of removal of Cr(VI) with PAC, GAC and adsorbent prepared from tobacco roots
1Post Graduate Department of Environmental Engineering, Institute of Science and Technology for Advanced Studies and Research, Vallabh Vidyanagar-388 120, Gujarat, India.
Abstract:
Tobacco roots activated carbon (TRAC) has been prepared from tobacco roots impregnated with 20% of ZnCl2 and carbonized at 6000 degrees C. Its adsorption capacity has been tested for the treatment of wastewater containing hexavalent chromium. The experiments were carried out in a batch process to study the different system variables such as concentration, adsorbent dosage and contact time. Removal of chromium in the process has been found to increase with increase in adsorbent dosage and contact time. The adsorption isotherm data fitted the Langmuir adsorption isotherm model.
