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Investigation on co-pyrolysis polygeneration of municipal solid waste and heavy bio-oil of pine wood based on response surface methodology

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  • Cen, Kenhui
  • Li, Xiaoran
  • Gan, Ziyu
  • Zhang, Hong
  • Chen, Dengyu

Abstract

This study investigates the co-pyrolysis of municipal solid waste (MSW) and heavy bio-oil (HB) to optimize product distribution and energy recovery. Response surface methodology (RSM) was employed to correlate the yields and higher heating values (HHVs) of syngas, tar, and biochar with three controlling factors—temperature, residence time, and HB proportion. The findings demonstrated that the synergy between MSW and HB enhanced both the syngas yield (peaking at 38.53 wt% under 800 °C, 17.5 min, 0 % HB) and the biochar yield (peaking at 23.8 wt% under 400 °C, 17.5 min, 12.5 % HB) while reducing the tar yield (peaking at 89 wt% under 600 °C, 5 min, and 100 % HB). Temperature and time positively influenced gas generation and energy content, whereas excessive HB addition inhibited gas formation. The optimized parameters demonstrated strong agreement between predicted and experimental values, confirming the reliability of the RSM model. This work provides valuable guidance for the resource utilization of urban organic solid waste and the production of clean fuels through co-pyrolysis.

Suggested Citation

  • Cen, Kenhui & Li, Xiaoran & Gan, Ziyu & Zhang, Hong & Chen, Dengyu, 2026. "Investigation on co-pyrolysis polygeneration of municipal solid waste and heavy bio-oil of pine wood based on response surface methodology," Renewable Energy, Elsevier, vol. 261(C).
    • Handle: RePEc:eee:renene:v:261:y:2026:i:c:s0960148126000340
    DOI: 10.1016/j.renene.2026.125209
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