Zhao Y, Xue F, Zhao X, Guo T, Li X. Experimental study on elemental mercury removal by diperiodatonickelate (IV) solution.
JOURNAL OF HAZARDOUS MATERIALS 2013;
260:383-388. [PMID:
23792931 DOI:
10.1016/j.jhazmat.2013.05.040]
[Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/19/2013] [Revised: 05/19/2013] [Accepted: 05/21/2013] [Indexed: 06/02/2023]
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.
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