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Determination of the Optimum Removal Efficiency of Fine Particulate Matter Using Activated Carbon Fiber (ACF)

Author

Listed:
  • Min-Kyeong Kim

    (Future Innovation R&D Strategy Division, Korea Railroad Research Institute, Uiwang 16105, Korea)

  • Yelim Jang

    (Transportation Environmental Research Team, Korea Railroad Research Institute, Uiwang 16105, Korea
    Department of Transportation System Engineering, University of Science & Technology (UST), Daejeon 34113, Korea)

  • Duckshin Park

    (Transportation Environmental Research Team, Korea Railroad Research Institute, Uiwang 16105, Korea)

Abstract

In Korea, concentrations of particulate matter (PM 10 ) are significantly higher in urban railway tunnels (178.1 μg/m 3 ) than in metropolitan areas (49 μg/m 3 ). In railway tunnels in Korea, it was maintained at 3–4 times higher concentration than general atmosphere and platform. Dust generated by trains is scattered at high speed in these tunnels, making filtration difficult; therefore, the development of filters that can be maintained in tunnels is required. In the present study, we examined PM adsorption in the laboratory scale using activated carbon fiber (ACF), which has high adsorption and capacity. The ACF depth, velocity of flow, and fine PM concentration in the tunnel were the experimental variables. We compared PM concentrations before and after the filter experiments, and calculated removal efficiency to determine the optimal conditions. Comprehensive examination of the experimental variables and differential pressure showed that the optimal conditions for an ACF specimen were a wind speed of 3.0 m/s and the ACF depth of 400 mm. The average removal efficiency of PM 10 was 55.5%, and that of PM 2.5 was 36.6%. The reproducibility tests showed that the ACF filter could be washed and reused and is suitable for various places because it is easily maintained.

Suggested Citation

  • Min-Kyeong Kim & Yelim Jang & Duckshin Park, 2020. "Determination of the Optimum Removal Efficiency of Fine Particulate Matter Using Activated Carbon Fiber (ACF)," IJERPH, MDPI, vol. 17(21), pages 1-10, November.
    • Handle: RePEc:gam:jijerp:v:17:y:2020:i:21:p:8230-:d:441343
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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.
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