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Effect of pyrolysis conditions on the preparation of nitrogen-containing chemicals and nitrogen-doped carbon from cock feathers: Nitrogen migration and transformation

Author

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  • Liu, Shanjian
  • Zhang, Guanshuai
  • Bi, Dongmei
  • Ni, Yu
  • Song, Jie
  • Song, Xiaoyu
  • Wang, Hui

Abstract

In order to realize the high-value utilization of cock feathers and reduce environmental pollution, waste feathers have been successfully converted into bio-oil enriched with nitrogenous chemicals and nitrogen-doped biochar through pyrolysis technology in this research. The effects of pyrolysis mode, pyrolysis temperature and pyrolysis atmosphere on the pyrolysis products were investigated. The results showed that the directional control of pyrolysis products can be achieved by changing the pyrolysis parameters. Pyrolysis mode and pyrolysis temperature were the main influencing factors. The fast pyrolysis favored the migration of element N to the bio-oil, in which the content of nitrogen compounds in bio-oil can reach up to 84 %. While the slow pyrolysis favored the increase of N content in the biochar. The appropriate increase of temperature facilitated the increase in bio-oil yield, favoring the generation of nitrogen heterocyclic compounds. In addition, CO2 atmosphere can inhibit the secondary cracking of volatile components, reducing N elemental migration to gas-phase products. Finally, the mechanism of nitrogen migration and transformation during feather pyrolysis and the evolution mechanism of nitrogenous compounds were proposed. This research can provide a theoretical basis for the preparation of nitrogenous compounds and nitrogen-doped biochar by using waste feathers.

Suggested Citation

  • Liu, Shanjian & Zhang, Guanshuai & Bi, Dongmei & Ni, Yu & Song, Jie & Song, Xiaoyu & Wang, Hui, 2025. "Effect of pyrolysis conditions on the preparation of nitrogen-containing chemicals and nitrogen-doped carbon from cock feathers: Nitrogen migration and transformation," Energy, Elsevier, vol. 315(C).
    • Handle: RePEc:eee:energy:v:315:y:2025:i:c:s0360544224041069
    DOI: 10.1016/j.energy.2024.134328
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    References listed on IDEAS

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