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Regional Transport of PM 2.5 from Coal-Fired Power Plants in the Fenwei Plain, China

Author

Listed:
  • Pan Lu

    (School of Water and Environment, Chang’an University, Xi’an 710064, China
    School of Energy and Architecture, Xi’an Aeronautical Institute, Xi’an 710077, China
    School of Architectural Engineering, Chang’an University, Xi’an 710064, China)

  • Shunxi Deng

    (School of Water and Environment, Chang’an University, Xi’an 710064, China
    Key Laboratory of Subsurface Hydrology and Ecological Effect in Arid Region of Ministry of Education, Chang’an University, Xi’an 710064, China)

  • Guanghua Li

    (School of Water and Environment, Chang’an University, Xi’an 710064, China)

  • Abula Tuheti

    (School of Water and Environment, Chang’an University, Xi’an 710064, China)

  • Jiayao Liu

    (School of Water and Environment, Chang’an University, Xi’an 710064, China)

Abstract

The Fenwei Plain (FWP) remains one of the worst PM 2.5 -polluted regions in China, although its air quality has improved in recent years. To evaluate the regional transport characteristics of PM 2.5 emitted by coal-fired power plants in the FWP in wintertime, the primary PM 2.5 , SO 2 , and NOx emissions from coal-fired power plants with large units (≥300 MW) in 11 cities of the area in January 2019 were collected based on the Continuous Emission Monitoring System (CEMS). The spatial distribution and source contribution of primary and secondary PM 2.5 concentrations were investigated using the Weather Research and Forecast (WRF) model and the California Puff (CALPUFF) model. The results showed that secondary PM 2.5 was transported over a larger range than primary PM 2.5 and that secondary nitrate was the main component of the total PM 2.5 concentration, accounting for more than 70%. High concentrations of primary, secondary, and total PM 2.5 mainly occurred in the Shaanxi region of the FWP, especially in Xianyang, where the PM 2.5 concentrations were the highest among the 11 cities, even though its pollutant emissions were at moderate levels. The PM 2.5 concentrations in Sanmenxia and Yuncheng primarily came from regional transport, accounting for 64% and 68%, respectively, while those in other cities were dominated by local emissions, accounting for more than 63%. The results may help to understand the regional transport characteristics of pollutants emitted from elevated point sources over a complex terrain.

Suggested Citation

  • Pan Lu & Shunxi Deng & Guanghua Li & Abula Tuheti & Jiayao Liu, 2023. "Regional Transport of PM 2.5 from Coal-Fired Power Plants in the Fenwei Plain, China," IJERPH, MDPI, vol. 20(3), pages 1-14, January.
    • Handle: RePEc:gam:jijerp:v:20:y:2023:i:3:p:2170-:d:1046456
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    References listed on IDEAS

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    1. Ru-Jin Huang & Yanlin Zhang & Carlo Bozzetti & Kin-Fai Ho & Jun-Ji Cao & Yongming Han & Kaspar R. Daellenbach & Jay G. Slowik & Stephen M. Platt & Francesco Canonaco & Peter Zotter & Robert Wolf & Sim, 2014. "High secondary aerosol contribution to particulate pollution during haze events in China," Nature, Nature, vol. 514(7521), pages 218-222, October.
    2. Cristina Mangia & Marco Cervino & Emilio Antonio Luca Gianicolo, 2015. "Secondary Particulate Matter Originating from an Industrial Source and Its Impact on Population Health," IJERPH, MDPI, vol. 12(7), pages 1-15, July.
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