title: Characteristics and stability of mercury vapor adsorption over two kinds of modified semicoke.
abstract: In an attempt to produce effective and lower price gaseous Hg(0) adsorbents, two methods of HCl and KMnO4/heat treatment were used respectively for the surface modification of liginite semicoke from inner Mongolia. The different effects of modification process on the surface physical and chemical properties were analyzed. The characteristics and stability of mercury vapor adsorption over two kinds of modified semicoke were investigated. The results indicated that modification process caused lower micropore quantity and volume capacity of semicoke; the C-Cl functional groups, C=O bond and delocalized electron π on the surface of Cl-SC, the amorphous higher valency Mn (x+) , and O=C-OH functional groups on the surface of Mn-H-SC were the active sites for oxidation and adsorption of gaseous Hg(0). Modification process led to higher mercury removal efficiency of semicoke at 140°C and reduced the stability of adsorbed mercury of semicoke in simulated water circumstance simultaneously.
authors.affiliation: College of Chemical and Environmental Engineering, Shandong University of Science and Technology, Qingdao, Shandong Province 266510, China.
authors.forename: Zhang
authors.initials: Z
authors.lastname: Huawei
authors.affiliation: College of Chemical and Environmental Engineering, Shandong University of Science and Technology, Qingdao, Shandong Province 266510, China.
authors.forename: Liu
authors.initials: L
authors.lastname: Xiuli
authors.affiliation: College of Chemical and Environmental Engineering, Shandong University of Science and Technology, Qingdao, Shandong Province 266510, China.
authors.forename: Wang
authors.initials: W
authors.lastname: Li
authors.affiliation: College of Chemical and Environmental Engineering, Shandong University of Science and Technology, Qingdao, Shandong Province 266510, China.
authors.forename: Liang
authors.initials: L
authors.lastname: Peng
mesh_terms: D000327:Adsorption; D061808:Air Filters; D000393:Air Pollutants / Q000302:isolation & purification*; D002681:China; D003031:Coal / Q000032:analysis*; D006851:Hydrochloric Acid / Q000737:chemistry; D008628:Mercury / Q000302:isolation & purification*; D010084:Oxidation-Reduction; D011196:Potassium Permanganate / Q000737:chemistry; D014835:Volatilization
chemical_list: D000393:Air Pollutants; D003031:Coal; D011196:Potassium Permanganate; D008628:Mercury; D006851:Hydrochloric Acid