Applied Science and Convergence Technology

The Korean Vacuum Society (한국진공학회)
권호 표지
DOI QR코드

DOI QR Code

Study on Chemical Removal of Nitric Oxide (NO) as a Main Cause of Fine Dust (Air Pollution) and Acid Rain

  • Received : 2017.09.20
  • Accepted : 2017.11.21
  • Published : 2017.11.30
Download PDF
⟨ Previous Next ⟩

Abstract

This study was conducted to remove $NO_x$, which is the main cause of fine dust and air pollution as well as acid rain. $NO_x$ was tested using 3% NO (diluted in He) as a simulated gas. Experiments were sequentially carried out by oxidizing NO to $NO_2$ and absorbing $NO_2$. Especially, we focused on the changes of NO oxidation according to both oxidant ($NaClO_2$) concentration change (1~10 M) and oxidant pH change (pH = 1~5) by adding HCl. In addition, we tried to suggest a method to improve $NO_2$ absorption by conducting $NO_2$ reduction reaction with reducing agent (NaOH) concentration (40~60%). It was found that NO removal efficiency increased as both concentration of oxidant and flow rate of NO gas increased, and NO decreased more effectively as the pH of hydrochloric acid added to the oxidant was lower. The $NO_2$ adsorption was also better with increasing NaOH concentration, but the NO removal efficiency was ~20% lower than that of the selective NO reduction. Indeed, this experimental method is expected to be a new method that can be applied to the capture and removal of fine dust caused by air pollution because it is a method that can easily remove NO gas by a simple device without expensive giant equipment.

Keywords

References

  1. D. Kang and J.-E. Kim, J. Korean Med. Sci. 29, 621 (2014). https://doi.org/10.3346/jkms.2014.29.5.621
  2. H. Lee, J. Kim, C.-L. Myung, and S. Park, J. of Mechanical Science and Technology 23, 1591 (2009). https://doi.org/10.1007/s12206-009-0425-1
  3. A. G. Nord and K. Tronner, Water, Air and Soil Pollution 85, 2719 (1995). https://doi.org/10.1007/BF01186245
  4. D. Harikishore, K. Reddy, and S.M. Lee, J. Environ. Anal. Toxicol. 2, 1 (2012).
  5. L. Bityukova, Water, Air, and Soil Pollution 172, 239 (2006). https://doi.org/10.1007/s11270-006-9078-1
  6. D.-S. Kim, J. Jeong, and J. Ahn, J. Korean Soc. Atmos. Environ. 32, 422 (2016). https://doi.org/10.5572/KOSAE.2016.32.4.422
  7. Sunita Bhargava and Sharad Bhargava, J. of Applied Chemistry 5, 19 (2013).
  8. I. A. Resitoglu, K. Altinisik, and A. Keskin, Clean Technol. Environ. Policy 17, 15 (2015). https://doi.org/10.1007/s10098-014-0793-9
  9. UNCTAD, Review of Maritime Transport 2016, United Nations Publications (2016) pp. 1-104.
  10. A. Singh and M. Agrawal, J. of Environmental Biology 29, 15 (2008).
  11. D. Shimokuri, S. Fukuba, and S. Ishizuka, Proceedings of the Combustion Institute 35, 3573 (2015). https://doi.org/10.1016/j.proci.2014.09.001
  12. J. Odgers and D. Kretschmer, The American Society of Mechanical Engineers 2, 1 (1985).
  13. D.W. Pershing and J. O. L. Wendt, Symposium (International) on Combustion 16, 389 (1977).
  14. S. Mahmoudi, J. Baeyesns and J. P.K. Seville, Biomass and Bioenergy 34, 1393 (2010). https://doi.org/10.1016/j.biombioe.2010.04.013
  15. S. W. Bae, S. A. Roh, and S. D. Kim, Chemosphere 65, 170 (2006). https://doi.org/10.1016/j.chemosphere.2006.02.040
  16. X. Han, X. Wei, U. Schnell, and K. R.G. Hein, Combustion and Flame 132, 374 (2003). https://doi.org/10.1016/S0010-2180(02)00481-9
  17. M. F. Irfan, J. H. Goo, and S. D. Kim, Applied Catalysis B: Environmental 78, 267 (2008). https://doi.org/10.1016/j.apcatb.2007.09.029
  18. N.W. Cant and A. D. Cowan, Catalysis Letters 46, 207 (1997). https://doi.org/10.1023/A:1019078804458
  19. H. W. Hsu, C. J. Lee, and K. S. Chou, Chem. Eng. Comm. 170, 67 (1997).
  20. C. Baukal, Metal Finishing 103, 18 (2005).