title: Conversion of elemental mercury with a novel membrane delivery catalytic oxidation system (MDCOs).
abstract: In order to overcome the shortcomings of the traditional catalytic oxidation (TCO) mode for the conversion of the trace level of elemental mercury (Hg(0)) in flue gas, we put forward a novel and unique assembly that integrated membrane delivery with catalytic oxidation systems (MDCOs), which combined the controlled delivery of oxidants with the catalytic oxidation of Hg(0). The results show that the demanded HCl for Hg(0) conversion in the MDCOs was less than 5% of that in the TCO mode, and over 90% of Hg(0) removal efficiency can be obtained in the MDCOs with less than 0.5 mg m(-3) of HCl escaped. Meanwhile, the inhibition of SO(2) to Hg(0) catalytic conversion in the MDCOs was also less significant than in the TCO. The MDCOs have high retainability for HCl, which is quite favorable to Hg(0) conversion and HCl utilization. The reaction mechanism on mercury conversion in the MDCOs is discussed. The MDCOs appear to be a promising method for emission control of elemental mercury.
authors.affiliation: School of Environmental Science and Engineering, Shanghai Jiao Tong University, Shanghai, China.
authors.forename: Yongfu
authors.initials: Y
authors.lastname: Guo
authors.forename: Naiqiang
authors.initials: N
authors.lastname: Yan
authors.forename: Shijian
authors.initials: S
authors.lastname: Yang
authors.forename: Zan
authors.initials: Z
authors.lastname: Qu
authors.forename: Zhongbiao
authors.initials: Z
authors.lastname: Wu
authors.forename: Yue
authors.initials: Y
authors.lastname: Liu
authors.forename: Ping
authors.initials: P
authors.lastname: Liu
authors.forename: Jinping
authors.initials: J
authors.lastname: Jia
mesh_terms: D000393:Air Pollutants / Q000737:chemistry*; D000397:Air Pollution / Q000517:prevention & control; D002384:Catalysis; D006851:Hydrochloric Acid / Q000737:chemistry; D017895:Manganese Compounds / Q000737:chemistry; D008628:Mercury / Q000737:chemistry*; D009589:Nitrogen Oxides / Q000737:chemistry; D010084:Oxidation-Reduction; D010087:Oxides / Q000737:chemistry; D011210:Power Plants / Q000295:instrumentation; D013458:Sulfur Dioxide / Q000737:chemistry
chemical_list: D000393:Air Pollutants; D017895:Manganese Compounds; D009589:Nitrogen Oxides; D010087:Oxides; D013458:Sulfur Dioxide; C027424:manganese oxide; D008628:Mercury; D006851:Hydrochloric Acid