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Author Spotlight: On-Site Biochar Production for Woody Debris Incineration in Forestry
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Biochar removes volatile organic compounds generated from asphalt.

Xinxing Zhou1, Taher Baghaee Moghaddam2, Meizhu Chen3

  • 1State Key Laboratory of Silicate Materials for Architecture, Wuhan University of Technology, Wuhan 430070, China; Key Laboratory of Highway Construction and Maintenance Technology in Loess Region, Shanxi Transportation Technology Research & Development Co., Ltd, Taiyuan 030032, China.

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Biochar effectively removes toxic volatile organic compounds (VOCs) from asphalt. Waste wood biochar showed the best performance due to its porous structure, highlighting biochar

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Area of Science:

  • Environmental Science
  • Materials Science
  • Chemistry

Background:

  • Volatile organic compounds (VOCs) pose significant environmental and health risks due to their toxicity and carcinogenicity.
  • Asphalt emissions contribute to air pollution and health hazards.

Purpose of the Study:

  • To investigate the efficacy of biochar in mitigating VOC emissions from asphalt.
  • To explore the influence of biochar source materials on VOC adsorption.
  • To elucidate the mechanism of VOC removal by biochar.

Main Methods:

  • Biochar production via pyrolysis of pig manure, waste wood, and straw.
  • Development of a molecular model to assess VOC adsorption energy and heat.
  • Construction of a VOC removal model to determine the removal mechanism.

Main Results:

  • Biochar effectively adsorbs alkanes, polycyclic aromatic hydrocarbons (PAHs), and sulfide compounds.
  • The source of biochar significantly impacts its VOC adsorption capabilities.
  • Waste wood-based biochar exhibited superior adsorption performance, attributed to its amorphous carbon, graphite, and porous structure.

Conclusions:

  • Biochar demonstrates significant potential as an inhibitor for VOC emissions from asphalt.
  • Tailoring biochar properties through feedstock selection can optimize VOC removal efficiency.
  • This research offers a sustainable approach to reducing air pollution from asphalt applications.