title: Enhanced capture of elemental mercury by bamboo-based sorbents.
abstract: To develop cost-effective sorbent for gas-phase elemental mercury removal, the bamboo charcoal (BC) produced from renewable bamboo and KI modified BC (BC-I) were used for elemental mercury removal. The effect of NO, SO2 on gas-phase Hg0 adsorption by KI modified BC was evaluated on a fixed bed reactor using an online mercury analyzer. BET surface area analysis, temperature programmed desorption (TPD) and X-ray photoelectron spectroscopy (XPS) were used to determine the pore structure and surface chemistry of the sorbents. The results show that KI impregnation reduced the sorbents' BET surface area and total pore volume compared with that of the original BC. But the BC-I has excellent adsorption capacity for elemental mercury at a relatively higher temperature of 140 °C and 180 °C. The presence of NO or SO2 could inhibit Hg0 capture, but BC-I has strong anti-poisoning ability. The specific reaction mechanism has been further analyzed.
authors.affiliation: State Key Laboratory of Coal Combustion, Huazhong University of Science and Technology, Wuhan, Hubei 430074, PR China.
authors.forename: Zengqiang
authors.initials: Z
authors.lastname: Tan
authors.forename: Jun
authors.initials: J
authors.lastname: Xiang
authors.forename: Sheng
authors.initials: S
authors.lastname: Su
authors.forename: Hancai
authors.initials: H
authors.lastname: Zeng
authors.forename: Changsong
authors.initials: C
authors.lastname: Zhou
authors.forename: Lushi
authors.initials: L
authors.lastname: Sun
authors.forename: Song
authors.initials: S
authors.lastname: Hu
authors.forename: Jianrong
authors.initials: J
authors.lastname: Qiu
mesh_terms: D000327:Adsorption; D000393:Air Pollutants / Q000737:chemistry*; D000397:Air Pollution / Q000517:prevention & control; D031723:Bambusa; D008628:Mercury / Q000737:chemistry*; D009569:Nitric Oxide / Q000737:chemistry; D016062:Porosity; D011193:Potassium Iodide / Q000737:chemistry*; D013458:Sulfur Dioxide / Q000737:chemistry; D013499:Surface Properties
chemical_list: D000393:Air Pollutants; D013458:Sulfur Dioxide; D011193:Potassium Iodide; D009569:Nitric Oxide; D008628:Mercury