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Aqueous clay suspensions stabilized by alginate fluid gels for coal spontaneous combustion prevention and control

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Abstract

We have developed aqueous clay suspensions stabilized by alginate fluid gels (AFG) for coal spontaneous combustion prevention and control. Specially, this study aimed to characterize the effect of AFG on the microstructure, static and dynamic stability, and coal fire inhibition performances of the prepared AFG-stabilized clay suspensions. Compared with aqueous clay suspensions, the AFG-stabilized clay suspensions manifest high static and dynamic stability, which can be ascribed to the formation of a robust three-dimensional gel network by AFG. The coal acceleration oxidation experimental results show that the prepared AFG-stabilized clay suspensions can improve the coal thermal stability and effectively inhibit the coal spontaneous oxidation process by increasing crossing point temperature (CPT) and reducing CO emission. The prepared low-cost and nontoxic AFG-stabilized clay suspensions, exhibiting excellent coal fire extinguishing performances, indicate great application potentials in coal spontaneous combustion prevention and control.

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Acknowledgments

This work was supported by the National Natural Science Foundation of China (U1361213, 51476184), Jiangsu Province Science Fund for Distinguished Young Scholars (BK20140005).

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Authors and Affiliations

  1. Faculty of Safety Engineering, China University of Mining & Technology, Xuzhou, 221116, Jiangsu, People’s Republic of China

    Botao Qin, Dong Ma & Fanglei Li

  2. State Key Laboratory of Coal Resources and Mine Safety, China University of Mining & Technology, Xuzhou, 221116, Jiangsu, People’s Republic of China

    Botao Qin, Dong Ma & Fanglei Li

  3. Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing, 100190, China

    Yong Li

Authors
  1. Botao Qin
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  2. Dong Ma
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  3. Fanglei Li
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  4. Yong Li
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Correspondence to Botao Qin or Yong Li.

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Responsible editor: Philippe Garrigues

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Qin, B., Ma, D., Li, F. et al. Aqueous clay suspensions stabilized by alginate fluid gels for coal spontaneous combustion prevention and control. Environ Sci Pollut Res 24, 24657–24665 (2017). https://doi.org/10.1007/s11356-017-9982-5

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  • DOI: https://doi.org/10.1007/s11356-017-9982-5

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