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Simultaneous removal of SO2, NO and Hg0 from flue gas by ferrate (VI) solution

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  • Zhao, Yi
  • Han, Yinghui
  • Guo, Tianxiang
  • Ma, Tianzhong

Abstract

Simultaneously removing SO2, NO and Hg0 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 Hg0 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 (E0) of ferrate (VI) solution with E0 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 Hg0 into SO42−, NO3− and Hg2+.

Suggested Citation

  • Zhao, Yi & Han, Yinghui & Guo, Tianxiang & Ma, Tianzhong, 2014. "Simultaneous removal of SO2, NO and Hg0 from flue gas by ferrate (VI) solution," Energy, Elsevier, vol. 67(C), pages 652-658.
    • Handle: RePEc:eee:energy:v:67:y:2014:i:c:p:652-658
    DOI: 10.1016/j.energy.2014.01.081
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    References listed on IDEAS

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    1. Zhao, Yi & Wang, Shuqin & Shen, Yanmei & Lu, Xiaojuan, 2013. "Effects of nano-TiO2 on combustion and desulfurization," Energy, Elsevier, vol. 56(C), pages 25-30.
    2. Wei, Z.S. & Du, Z.Y. & Lin, Z.H. & He, H.M. & Qiu, R.L., 2007. "Removal of NOx by microwave reactor with ammonium bicarbonate and Ga-A zeolites at low temperature," Energy, Elsevier, vol. 32(8), pages 1455-1459.
    3. Vinogradov, Jan & Rivin, Boris & Sher, Eran, 2008. "NOx reduction from compression ignition engines with pulsed corona discharge," Energy, Elsevier, vol. 33(3), pages 480-491.
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    Cited by:

    1. Wejkowski, Robert & Wojnar, Wacław, 2018. "Selective catalytic reduction in a rotary air heater (RAH-SCR)," Energy, Elsevier, vol. 145(C), pages 367-373.
    2. Si, Tong & Wang, Chunbo & Liu, Ruiqi & Guo, Yusheng & Yue, Shuang & Ren, Yujie, 2020. "Multi-criteria comprehensive energy efficiency assessment based on fuzzy-AHP method: A case study of post-treatment technologies for coal-fired units," Energy, Elsevier, vol. 200(C).
    3. Li, Hailong & Wang, Bin & Yan, Jinying & Salman, Chaudhary Awais & Thorin, Eva & Schwede, Sebastian, 2019. "Performance of flue gas quench and its influence on biomass fueled CHP," Energy, Elsevier, vol. 180(C), pages 934-945.

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