<p>This study presents a novel methodology for hydrogen production via biomass pyrolysis using industrial solid waste-derived catalysts, providing an innovative pathway to facilitate the conversion of highly valuable biomass resources. In this study, the effects of four typical industrial solid wastes (coal ash, carbide slag, red mud and steel slag) as Ni-based catalyst carriers on the pyrolysis gas composition and yield of pine wood chips were investigated. The experimental data reveal that the integration of fly ash as a support material for Ni (Ni<sub>0.1</sub>/CA) significantly enhances catalyst efficiency, resulting in the highest total gas yield. Compared to other supports, the catalyst incorporating calcium carbide residue (Ni<sub>0.1</sub>/CS) exhibits superior hydrogen generation performance, achieving a maximum H₂ yield of 283.40 mL/g <sub>biomass</sub> with a H₂ concentration of 64.5 vol%. To explore the effect of nickel loading on hydrogen production efficiency, the performance of Ni loading onto calcium carbide residue was systematically assessed. Experimental results demonstrated that Ni<sub>0.1</sub>/CS represents the optimal loading configuration, exhibiting superior catalytic properties. Finally, the effect of pyrolysis reaction temperature on gaseous pyrolysis products was methodically assessed, followed by an evaluation of catalyst stability under cyclic conditions at the optimal pyrolysis temperature of 600 ℃. The catalyst consistently achieved a hydrogen yield of 197.78 mL/g <sub>biomass</sub> over five cycles, retaining 71.19% of its initial performance. In conclusion, this study develops an innovative, environmentally sustainable, and economically viable approach that effectively integrates low-value biomass with industrial solid waste, thereby proposing a cost-effective, eco-friendly technological framework for the distributed production of green hydrogen.</p>

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Enhanced biomass pyrolysis for hydrogen production using typical industrial solid waste as Ni based catalyst carriers

  • Peng Dai,
  • Peihao Mai,
  • Yijian Hu,
  • Wenchang Yue,
  • Zhaosheng Yu

摘要

This study presents a novel methodology for hydrogen production via biomass pyrolysis using industrial solid waste-derived catalysts, providing an innovative pathway to facilitate the conversion of highly valuable biomass resources. In this study, the effects of four typical industrial solid wastes (coal ash, carbide slag, red mud and steel slag) as Ni-based catalyst carriers on the pyrolysis gas composition and yield of pine wood chips were investigated. The experimental data reveal that the integration of fly ash as a support material for Ni (Ni0.1/CA) significantly enhances catalyst efficiency, resulting in the highest total gas yield. Compared to other supports, the catalyst incorporating calcium carbide residue (Ni0.1/CS) exhibits superior hydrogen generation performance, achieving a maximum H₂ yield of 283.40 mL/g biomass with a H₂ concentration of 64.5 vol%. To explore the effect of nickel loading on hydrogen production efficiency, the performance of Ni loading onto calcium carbide residue was systematically assessed. Experimental results demonstrated that Ni0.1/CS represents the optimal loading configuration, exhibiting superior catalytic properties. Finally, the effect of pyrolysis reaction temperature on gaseous pyrolysis products was methodically assessed, followed by an evaluation of catalyst stability under cyclic conditions at the optimal pyrolysis temperature of 600 ℃. The catalyst consistently achieved a hydrogen yield of 197.78 mL/g biomass over five cycles, retaining 71.19% of its initial performance. In conclusion, this study develops an innovative, environmentally sustainable, and economically viable approach that effectively integrates low-value biomass with industrial solid waste, thereby proposing a cost-effective, eco-friendly technological framework for the distributed production of green hydrogen.