A Feasibility Study on Utility of Unburned Carbon in Wastewater Treatment

Coal combustion by-products (CCPs) contains a certain amount of unburned carbon partcles (~4% to ~30%) without utility way. For utility of unburned carbon, this study tried to make unburned carbon be adsorbent in wastewater treatment. A activation treatment with high temperature had proceed on unburned carbon sample, and effects on adsorptive capability were appeared with results such as the adsorbed amount of iodine, and dyeing solution of methylene blue. Result shows unburned carbon demonstrated a larger adsorptive capability after applicable treatment; the product can reach a iodine number more than 1000mg/g at a initial amount about 100mg/g, and an adsorbed amount of methylene blue solution (1200ppm) more than 100ml/g at a initial amount about 4ml/g. Conclusively, it is feasible to utilize unburned carbon as adsorbent in wastewater treatment.