title: Experimental study on elemental mercury removal by diperiodatonickelate (IV) solution.
abstract: A novel method has been developed to remove elemental mercury from simulated flue gas by a diperiodatonickelate (IV) solution. The influencing factors, such as diperiodatonickelate (IV) concentration, reaction temperature, solution pH, the initial Hg(0) concentration, SO₂ concentration and NO concentration were investigated at a bubbling reactor. In the presence of SO₂ and NO, removal efficiency of 86.2% for elemental mercury was obtained. Meanwhile, 56.2% of NO and 98% of SO₂ were simultaneously removed, under the optimal experimental conditions, in which diperiodatonickelate (IV) concentration was 6 × 10(-3)mol/L, reaction temperature was 50°C, the initial Hg(0) concentration was 20 μg/m(3) and pH was 8.5. Moreover, based on the research results of the hydrolyzing products of IO(4-), and the analysis of the removal products of Hg(0), the reaction mechanism of Hg(0) removal was proposed.
authors.affiliation: School of Environmental Science and Engineering, North China Electric Power University, Baoding 071003, PR China. zhaoyi9515@163.com
authors.forename: Yi
authors.initials: Y
authors.lastname: Zhao
authors.forename: Fangming
authors.initials: F
authors.lastname: Xue
authors.forename: Xiaochu
authors.initials: X
authors.lastname: Zhao
authors.forename: Tianxiang
authors.initials: T
authors.lastname: Guo
authors.forename: Xiaolei
authors.initials: X
authors.lastname: Li
mesh_terms: D000393:Air Pollutants / Q000032:analysis*; D056831:Coordination Complexes / Q000737:chemistry*; D004867:Equipment Design; D005740:Gases; D006863:Hydrogen-Ion Concentration; D006868:Hydrolysis; D007221:Industry; D008628:Mercury / Q000032:analysis*; D008956:Models, Chemical; D009532:Nickel / Q000737:chemistry*; D011786:Quality Control; D013696:Temperature
chemical_list: D000393:Air Pollutants; D056831:Coordination Complexes; D005740:Gases; D009532:Nickel; D008628:Mercury
keywords: Diperiodatonickelate (IV); Hg(0) removal; Liquid phase; Reaction mechanism