Adsorptive Removal of Chromium (VI) from Aqueous Solutions by using Sugar and Distillery Waste Material

Raw bagasse, Bagasse fly ash and distillery sludge, the waste generated in sugar mills and distillery have been used as low-cost potential biosorbent for the removal of hexavalent chromium from an aqueous solution. The effect of hydrogen ion concentration, contact time, adsorbent dose, initial concentrations of adsorbate and adsorbent dose on the uptake of chromium were studied in batch experiments. Bagasse fly ash, Distillery sludge and sugar cane bagasse could be an economical biosorbent for the removal of hexavalent chromium from aqueous system. The order of selectivity is bagasse >bagassefly ash >distillery sludge for Cr(VI) removal.