Progress on Removal of Aromatic Hydrocarbons from Flue Gas by Sorbents

Aromatic hydrocarbons,as one of persistent organic pollutants,are widely accumulated in the air environment with complicated structure.PAHs and BTEX are harmful to the environment and health of people,because they are precursors of photochemical oxidants and agents of the acid rain,and their high degree of mutagenicity and carcinogenicity.Therefore,emission control of gaseous aromatic hydrocarbons in flue gas has increasingly become an interesting subject in the fields of atmospheric and environmental science.Among the purifying technologies,adsorption is a relatively promising approach to remove aromatic hydrocarbons from flue gas as its advantages over high removal efficiency,low energy consumption and easy using.Recent studies on choice of the sorbents,influencing factors,surface modification and adsorption removal model of aromatic hydrocarbons from flue gas were reviewed,the developing tendency of adsorption techniques for removal of aromatic hydrocarbons were also discussed.