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A study on the characteristics and kinetic of co-catalytic pyrolysis with rape straw and ABS waste plastics

Author

Listed:
  • Luo, Miaoling
  • Shao, Shanshan
  • Cao, Yu
  • Li, Xiaohua
  • Wu, Shiliang

Abstract

TG analysis, kinetic model and fixed-bed experiments were applied in this study to explore the synergistic effect of rape straw (RS) and acrylonitrile-butadiene-styrene copolymer (ABS) in the co-catalytic pyrolysis. The results showed that the preferential pyrolysis of RS was favorable for the formation of some active radicals and decreased the pyrolysis temperature of ABS from about 400 °C to 350 °C. As the mixing ratio of ABS rose, the temperature range of co-pyrolysis decreased gradually. The interaction between the free radicals generated by RS and ABS was effectively promoted with the addition of HZSM-5, and also the aromatization was accelerated. The temperature range of co-pyrolysis was decreased from 350 °C to 400 °C–340 °C–380 °C. The Flynn-Wall Ozawa (FWO) and Kissinger-Akahira-Sunose (KAS) were used to build the kinetics model, and revealed that the activation energy of co-pyrolysis system reached the bottom with the mixing ratio was 1:1, indicating the strongest synergistic effect at this point. The synergistic action was revealed from the kinetic analysis. In the fixed-bed test, the yield of liquid phase (54.15 %) and monocyclic aromatic hydrocarbons (MAHs) (32.87 %) peaked at the mixing ratio of 1:1, at which the synergistic effect inhibited the conversion to polycyclic aromatic hydrocarbons (PAHs).

Suggested Citation

  • Luo, Miaoling & Shao, Shanshan & Cao, Yu & Li, Xiaohua & Wu, Shiliang, 2025. "A study on the characteristics and kinetic of co-catalytic pyrolysis with rape straw and ABS waste plastics," Renewable Energy, Elsevier, vol. 242(C).
    • Handle: RePEc:eee:renene:v:242:y:2025:i:c:s0960148125001120
    DOI: 10.1016/j.renene.2025.122450
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