Removal of Lead from the Simulated MSW Incineration Flue Gas by Sulfur-Impregnated Activated Carbon Fiber (ACF/S)

The removal efficiency of Pb by activated carbon filters (ACF) modified by sulfur (ACF/S) was investigated. Two parameters (mass fractions of sulfur and atmosphere of simulated flue gas) were examined for their effects on the removal efficiencies. SEM (scanning electron microscopy) and FTIR (Fourier transform infrared spectroscopy) were used to investigate the mechanism of Pb captured by ACF/S. SEM images indicate that a large quantity of the sulfur is distributed onto the surface of ACF, and aggregation is present. Experimental results show that, the sulfur significantly enhance the ACF performance for Pb removal in different atmosphere of the simulated MSW flue gas (HCl, SO2, HCl+SO2) with efficiencies higher than 65% for particulate lead and 80% for volatile lead. In conclusion, ACF/S is a promising material for Pb removal from flue gas. © 2012 Peking University.