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Photocatalytic oxidation of nitric oxide from simulated flue gas by wet scrubbing using ultraviolet/TiO2/H2O2 process

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Abstract

Nitric oxide (NO) from flue gas is hard to remove because of low solubility and reactivity. A new technology for photocatalytic oxidation of NO using ultraviolet (UV)/TiO2/H2O2 process is studied in an efficient laboratory-scale reactor. Effects of several key operational parameters on NO removal efficiency are studied, including TiO2 content, H2O2 initial concentration, UV lamp power, NO initial content, oxygen volume fraction and TiO2/H2O2 solution volume. The results illustrate that the NO removal efficiency increases with the increasing of H2O2 initial concentration or UV lamp power. Meanwhile, a lower NO initial content or a higher TiO2/H2O2 solution volume will result in higher NO removal efficiency. In addition, oxygen volume fraction has a little effect. The highest NO removal efficiency is achieved at the TiO2 content of 0.75 g/L, H2O2 initial concentration of 2.5 mol/L, UV lamp power of 36 W, NO initial content of 206×10−6 and TiO2/H2O2 solution volume of 600 mL. It is beneficial for the development and application of NO removal from coal-fired flue gas with UV/TiO2/H2O2 process.

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Authors and Affiliations

  1. Key Laboratory of Energy Thermal Conversion and Control of Ministry of Education, School of Energy and Environment, Southeast University, Nanjing, 210096, China

    Bo Zhang  (张波), Zhao-ping Zhong  (仲兆平) & Zong-ming Fu  (付宗明)

Authors
  1. Bo Zhang  (张波)
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  2. Zhao-ping Zhong  (仲兆平)
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  3. Zong-ming Fu  (付宗明)
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Corresponding author

Correspondence to Zhao-ping Zhong  (仲兆平).

Additional information

Foundation item: Project(2011CB201505) supported by the National Key Basic Research Program of China; Project(BA2011031) supported by the Special Fund of Transformation of Scientific and Technological Achievements of Jiangsu Province, China

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Zhang, B., Zhong, Zp. & Fu, Zm. Photocatalytic oxidation of nitric oxide from simulated flue gas by wet scrubbing using ultraviolet/TiO2/H2O2 process. J. Cent. South Univ. 22, 82–87 (2015). https://doi.org/10.1007/s11771-015-2497-7

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  • DOI: https://doi.org/10.1007/s11771-015-2497-7

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