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Cellulose

, Volume 26, Issue 17, pp 9045–9055 | Cite as

The spontaneous combustion mechanism of sawdust from the aspect of biochemical components

  • Quanbing Luo
  • Zili He
  • Wenbin XuEmail author
  • Hao ShenEmail author
  • Dong Liang
  • Ting Ren
Original Research
  • 61 Downloads

Abstract

Cellulose, hemicellulose and lignin are generally recognized as the main components of sawdust. In this paper, the spontaneous combustion mechanism of sawdust was studied from the aspect of these components. The thermogravimetry analysis and biochemical component analysis showed that the lignin decomposed evidently at the induction period of thermal decomposition of sawdust, and the lignin contents of sawdust also presented positive correlation with their spontaneous combustion risk. Scanning electron microscope, fourier transform infrared spectroscopy and X-ray photoemission spectra were implemented further. The results showed that: the cellulose remained stable at the induction period; for hemicellulose, the oxidation reaction took place, but it was very weak. However, for lignin, the dehydration reaction (loss hydroxyl group of alcohols) took place evidently so that the lignin exhibited an apparent porous structure. Therefore, the dehydration reaction of lignin might greatly affect the spontaneous combustion of sawdust.

Keywords

Sawdust Biochemical components Spontaneous combustion Thermogravimetry (TG) X-ray photoemission spectra (XPS) 

Notes

Acknowledgments

This work was supported by Guangdong Provincial Scientific and Technological Project (No. 2014B030301034).

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Copyright information

© Springer Nature B.V. 2019

Authors and Affiliations

  1. 1.Guangzhou Key Laboratory Environmental Catalysis and Pollution Control, Guangdong Key Laboratory of Environmental Catalysis and Health Risk Control, School of Environmental Science and Engineering, Institute of Environmental Health and Pollution ControlGuangdong University of TechnologyGuangzhouChina
  2. 2.Guangdong Provincial Key Laboratory of Fire Science and Technology, School of Intelligent Systems EngineeringSun Yat-sen UniversityGuangzhouChina
  3. 3.School of Civil, Mining and Environmental EngineeringUniversity of WollongongWollongongAustralia

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