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Study on method and mechanism for simultaneous desulfurization and denitrification of flue gas based on the TiO2 photocatalysis

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Abstract

Based on the TiO2 photocatalysis mechanism, a new method of simultaneous desulfurization and denitrification from flue gas was proposed. Preparation of TiO2 photocatalyst, design of photocatalysis reactor and influencing factors for simultaneous removal of SO2 and NO, and removal mechanism of SO2 and NO were studied. After the optimal values of concentration of O2 in flue gas, the relative humidity of flue gas and the irradiation time in the photocatalysis reactor were used, the efficiencies of removal for SO2 and NO can be achieved above 98% and about 67%, respectively. According to the results of removal products analysis, the removal mechanism of SO2 and NO based on TiO2 photocatlysis can be put forward, namely, SO2 was oxidized to SO3 partly, the bulk of NO was oxidized to NO2, and both were removed by resorbing finally.

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References

  1. Hoffmann M R, Martin S T, Choi W, et al. Environmental applications of semiconductor photocatalysis. Chem Rev, 1995, 95(1): 69–96

    Article  Google Scholar 

  2. Zhu J Y, Zeng Y Y, Kuang D B, et al. Gas-phase photocatalytic of NOx under weak intensity UV irradiation. Natur Sci (in Chinese), 2001, 40(6): 31–34

    Google Scholar 

  3. Yu J C, Lin J, Kwok R W M. Enhanced photocatalytic activity of Ti1−xVxO2 solid solution on the degradation of acetone. J Photoch Photobio A, 1997, 111: 199–203

    Article  Google Scholar 

  4. Romero M, Blanco J, Sanchez B, et al. Solar photocatalytic degradation of water and air pollutants: Challenges and perspectives. Solar Energy, 1999, 66: 169–182

    Article  Google Scholar 

  5. Ibusui T, Takeuchi K. Removal of low concentration nitrogen oxides through photoassisted heterogeneous catalysis. J Mol Catal, 1994, 88: 93–102

    Article  Google Scholar 

  6. Zhao W K, Fang Y L. Synthesis of photocatalytic activity TiO2 thin films at low-tempeture. Acta Phys Chem (in Chinese), 2002, 18(4): 368–371

    Google Scholar 

  7. National Environmental Protection Agency. Redaction Council of Analysis Methods of Water and Wastwater, Monitoring Methods of Water and Wastwater. Beijing: China Environmental Science Press, 2002. 164

    Google Scholar 

  8. National Environmental Protection Agency. Redaction Council of Analysis Methods of Water and Wastwater, Monitoring Methods of Water and Wastwater. Beijing: China Environmental Science Press, 2002. 271

    Google Scholar 

  9. Xu A W, Liu H Q, Li Y Q. Study on the photocatalytic oxidation degradation of NOx in the air. Chem J Chinese U (in Chinese), 2000, 21: 1252–1256

    Google Scholar 

  10. Bickley R I, Stone F S. Photoadsorption and photocatalysis at rutile surfaces. J Catal, 1973, 31(31): 389–397

    Article  Google Scholar 

  11. Luo Y Q, Li D J, Huang Z. Preparation of titanium dioxide particles and properties for flue gas desulfurization. Environ Sci (in Chinese), 2003, 24(1): 147–151

    Google Scholar 

  12. Yang R T, Li W B, Chen N. Reversible chemisorption of nitric oxide in the presence of oxygen on titania and titania modified with surface sulfate. Appl Catal A-Gen, 1998, 169: 215–225

    Article  Google Scholar 

  13. Lin Y S, Deng S G. Analysis of liquid chromatography with nonuniform crystallite particles. Aiche J, 1990, 36(10): 1569–1576

    Article  Google Scholar 

  14. Wang Y, Mohammed S O, Lavelley J C, et al. FTIR study of adsorption and reaction of SO2 and H2S on Na/SiO2. Appl Catal B-Environ, 1998, 16: 279–290

    Article  Google Scholar 

  15. Shang J, Xu Z L, Du G Y, et al. Studies on photocatalytic oxidation reaction SO2 over TiO2. Chem J Chinese U, 2000, 21: 1299–1300

    Google Scholar 

  16. Tang X Y. Atmosphere Environmental Chemistry. Beijing: High Education Press, 1990. 124–125

    Google Scholar 

  17. Campostrini R, Carturan G, Palmisano L. Sol-gel derived anatase TiO2 morphology and photoactivity. Mater Chem Phys, 1994, 38(3): 277–283

    Article  Google Scholar 

  18. Sanchez J, Augustynski J. X-ray photoelectron spectroscopic study of the interaction of various anions with the oxide-covered titanium metal. J Electroanal Chem, 1979, 103(26): 423–426

    Article  Google Scholar 

  19. Dalton J S, Janes P A, et al. Photocatalytic oxidation of NOx gases using TiO2: A surface spectroscopic approach. Enviro Pollu, 2002, 120: 415–422

    Article  Google Scholar 

  20. Hashimoto K, Wasada K, Toukai N, et al. Photocatalytic oxidation of nitrogen monoxide over titanium (VI) oxide nanocrystals large size areas. J Photoch Photobio A, 2000, 136: 103–109

    Article  Google Scholar 

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Authors and Affiliations

  1. School of Environmental Science & Engineering, North China Electric Power University, Baoding, 071003, China

    Zhao Yi, Zhao Li, Han Jing, Xu YongYi & Wang ShuQin

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  1. Zhao Yi
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  2. Zhao Li
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  3. Han Jing
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  4. Xu YongYi
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  5. Wang ShuQin
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Correspondence to Zhao Yi.

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Zhao, Y., Zhao, L., Han, J. et al. Study on method and mechanism for simultaneous desulfurization and denitrification of flue gas based on the TiO2 photocatalysis. Sci. China Ser. E-Technol. Sci. 51, 268–276 (2008). https://doi.org/10.1007/s11431-008-0021-0

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  • DOI: https://doi.org/10.1007/s11431-008-0021-0

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