Effects of corncob addition on properties of sludge activated carbon
玉米芯掺杂对污泥基活性炭性能的影响

Due to the poor microporosity and small surface area of activated carbon derived from sewage sludge,corncob was added to improve the properties of the activated carbon.By analyzing the surface area,pore structure,iodine adsorption value,superficial morphology and surface functional groups,the effects of corncob addition on the physicochemical properties of the activated carbons were discussed.Phenol and nitrobenzene were selected as the target pollutants and their adsorption behaviors were studied accordingly.Results indicate that the micropore volume and surface area of the activated carbon are greatly increased by the addition of the corncob but the species and quantities of functional groups don’t change much.The surfaces of all the activated carbons are dominated by acid groups.Results indicate that phenol and nitrobenzene adsorption capacities are highly associated with the acid groups and thus are not promoted by the corncob addition.