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Suppression Characteristics and Mechanism of Molasses Solution on Coal Dust: A Low-Cost and Environment-Friendly Suppression Method in Coal Mines

Author

Listed:
  • Jianguo Liu

    (NHC Key Laboratory for Engineering Control of Dust Hazard, University of Science and Technology Beijing, Beijing 100083, China
    State Key Laboratory of Safety and Health for Metal Mine, Maanshan 243000, China)

  • Tianyang Wang

    (School of Civil and Resource Engineering, University of Science and Technology Beijing, Beijing 100083, China)

  • Longzhe Jin

    (NHC Key Laboratory for Engineering Control of Dust Hazard, University of Science and Technology Beijing, Beijing 100083, China)

  • Gang Li

    (State Key Laboratory of Safety and Health for Metal Mine, Maanshan 243000, China)

  • Shu Wang

    (NHC Key Laboratory for Engineering Control of Dust Hazard, University of Science and Technology Beijing, Beijing 100083, China
    School of Civil and Resource Engineering, University of Science and Technology Beijing, Beijing 100083, China)

  • Yixuan Wei

    (NHC Key Laboratory for Engineering Control of Dust Hazard, University of Science and Technology Beijing, Beijing 100083, China
    School of Civil and Resource Engineering, University of Science and Technology Beijing, Beijing 100083, China)

  • Shengnan Ou

    (School of Civil and Resource Engineering, University of Science and Technology Beijing, Beijing 100083, China)

  • Yapeng Wang

    (College of Environment and Safety Engineering, Qingdao University of Science and Technology, Qingdao 266042, China)

  • Jingge Xu

    (Institute of Occupational Health, China Academy of Safety Science and Technology, Beijing 100012, China)

  • Minglei Lin

    (School of Civil and Resource Engineering, University of Science and Technology Beijing, Beijing 100083, China)

  • Jiahui Wang

    (School of Civil and Resource Engineering, University of Science and Technology Beijing, Beijing 100083, China)

  • Xianfeng Liu

    (State Key Laboratory of Coal Mine Disaster Dynamics and Control, School of Resources and Safety Engineering, Chongqing University, Chongqing 400044, China)

Abstract

Coal dust pollution poses a serious public health threat. This study aimed to investigate the feasibility of creating a coal dust suppressant using molasses, a byproduct of the sugar industry. We studied the effects of a molasses solution of varying concentrations (i.e., ranging from 0% (pure water) to 40%) on the moisture, bonding, and wind erosion properties of coal dust. Overall, the effectiveness of the molasses increased with their concentration, and it manifested itself in the following way: (1) the molasses improved the anti-evaporation ability of wet coal dust. For example, the evaporation mass of the coal dust wetted using a molasses solution decreased by 82.8%; (2) molasses effectively agglutinated coal dust; (3) molasses can effectively decrease the surface tension and increase the viscosity of the wetting solution. The surface tension of the molasses solution reached 41.37 mN/m and the viscosity increased to 6.79 mPa·s; (4) molasses can significantly suppress the wind erosion of deposited coal dust, with its wind erosion mass decreasing 99.1%; finally, (5) the effectiveness of molasses at suppressing coal dust was discussed at a molecular level. This study highlights the feasibility of a low-cost and environment-friendly dust suppressant in coal mines.

Suggested Citation

  • Jianguo Liu & Tianyang Wang & Longzhe Jin & Gang Li & Shu Wang & Yixuan Wei & Shengnan Ou & Yapeng Wang & Jingge Xu & Minglei Lin & Jiahui Wang & Xianfeng Liu, 2022. "Suppression Characteristics and Mechanism of Molasses Solution on Coal Dust: A Low-Cost and Environment-Friendly Suppression Method in Coal Mines," IJERPH, MDPI, vol. 19(24), pages 1-19, December.
    • Handle: RePEc:gam:jijerp:v:19:y:2022:i:24:p:16472-:d:997509
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    References listed on IDEAS

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    1. Ming Li & Xinzhu Song & Gang Li & Jiao Tang & Zhi Li, 2022. "Experimental Study on Dust Suppression Effect and Performance of New Nano-Composite Dust Suppressant," IJERPH, MDPI, vol. 19(10), pages 1-9, May.
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    Cited by:

    1. Jianguo Liu & Minglei Lin & Longzhe Jin & Gang Li & Shengnan Ou & Yapeng Wang & Tianyang Wang & Mulati Jueraiti & Yunqi Tian & Jiahui Wang, 2023. "Influence of Molasses on the Explosion and Decomposition Properties of the Coal Dust Deposited in Underground Mines," Energies, MDPI, vol. 16(6), pages 1-15, March.

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