Environmental Science and Pollution Research

, Volume 26, Issue 19, pp 19220–19227 | Cite as

Influence of NO2 and SO2 on the specific resistance of dust in flue gas

  • Pan Zhang
  • Yuan Yao
  • Yankun Li
  • Shaoyu Yuan
  • Liqiang QiEmail author
Research Article


The influence of flue gas composition on the specific resistance of coal-fired fly ash is studied in this paper. We conclude that the negative electrons of NO2 and SO2 gases are strong. The probabilities of electron desorption on SO2 and NO2 negative ions are lower than that in air atmosphere at high temperature. Therefore, the introduction of SO2 causes NO2 to reduce the specific resistance value of coal-fired fly ash. When the pores on the surface of fly ash particles are filled with SO2, no change will occur in NO2, average pore size, pore volume, and specific surface area of fly ash particles, thereby resulting in fly ash that remains unchanged from the resistance value. When humidity increases, the surface conduction effect is greatly enhanced, and the specific resistance value is lowered considerably. Therefore, the specific resistance of dust can be reduced by humidification.


Fly ash Specific resistance Sulfur dioxide Nitrogen dioxide Humidity 


Funding information

This work was supported by the National Natural Science Foundation of China (Grant No. 21376072) and the Fundamental Research Funds for the Central Universities (Grant No. 2017MS140).


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Copyright information

© Springer-Verlag GmbH Germany, part of Springer Nature 2019

Authors and Affiliations

  1. 1.Hebei Key Lab of Power Plant Flue Gas Multi-Pollutants Control, Department of Environmental Science and EngineeringNorth China Electric Power UniversityBaodingPeople’s Republic of China
  2. 2.MOE Key Laboratory of Resources and Environmental Systems Optimization, College of Environmental Science and EngineeringNorth China Electric Power UniversityBeijingPeople’s Republic of China

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