期刊
ENERGY
卷 67, 期 -, 页码 652-658出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.energy.2014.01.081
关键词
Ferrate (VI) solution; Simultaneous removal of SO2, NO and Hg-0; Oxidation reaction
资金
- National High-tech Research and Development Projects (863 program) [2013AA65403]
- Program for Changjiang Scholars and Innovative Research Team in University [IRT1127]
Simultaneously removing SO2, NO and Hg-0 from flue gas was examined by ferrate (VI) solution at a bubbling reactor. The removal efficiencies of 100% for SO2, 64.8% for NO and 81.4% for Hg-0 were achieved respectively, under the optimum experimental conditions, in which concentration of ferrate (VI) solution was 0.25 mmol/L, solution pH was 8.0, flue gas flow rate was 1 L/min and reaction temperature was 320 K. Based on the discussions of the ferrate (VI) solution characteristics, the' comparisons of the standard electrode potential (E-0) of ferrate (VI) solution with E-0 values of reactant, and the analysis of the reaction products, a mechanism of simultaneous removal was proposed. In the process of simultaneous removal, FeO42- and HFeO4- as the dominant species of ferrate (VI), could rapidly oxidize SO2, NO, and Hg-0 into SO42-, NO3- and Hg2+. (C) 2014 Elsevier Ltd. All rights reserved.
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