The reduction of heavy metals Cd and Cr levels in wastewater using bagasse charcoal as an adsorbent

The utilization of charcoal from bagasse as adsorbent is an alternative way to reduce heavy metal of Cd and Cr in Wastewater. Bagasse is one of the agricultural wastes that potentially obtained with an abundant amount. This research aims to identify the full time and the adsorption capacity of charcoal with a continuous column method and downflow. Activation of charcoal used is Chloride Acid 2N in 24 hours soaking. Metal solution concentration of Cd and Cr were 2 ppm and 5 ppm, respectively. The results of this study are that full time for charcoal for Cd occurred on minutes of 480 for 2 ppm and minutes of 300 for 5 ppm. Meanwhile, saturated time for Cr occurred on minutes of 360 for 2 ppm and minutes of 240 for 5 ppm. The significant efficiency of metal ion adsorption to Cd concentrations for 5 ppm and 2 ppm were 28,05% and 26,75%.