Bioenergy potential of sea buckthorn branches: A study on the multicomponent kinetics and thermodynamics of its pyrolysis

IF 9 1区工程技术 Q1 ENERGY & FUELS

Renewable Energy Pub Date : 2025-06-16 DOI:10.1016/j.renene.2025.123786

Jiuzhuo Cui , Zhitong Yao , Huanxuan Li , Jean Constantino Gomes da Silva , José Luiz Francisco Alves , Yang Chen , Akash Kumar , Ljiljana Medic Pejic , Jingjing Jiang , Jiayao Tong , Jie Liu , Haoqi Wang , Wei Qi

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引用次数: 0

Abstract

This study investigated the multicomponent pyrolysis kinetics and thermodynamics of sea buckthorn branch (SBB) biomass to assess its bioenergy potential. Thermogravimetric analysis coupled with Fraser-Suzuki deconvolution identified three pseudo-components (PS-HC, PS-CL, and PS-LG) with peak temperatures of 283–305 °C, 344–366 °C, and 400–422 °C, respectively. Py-GC/MS analysis showed that C₁₆-C₂₈ alkanes and acid were the dominant products, consistent with the significant C-H and C=O group vibrations in the FTIR analysis. Activation energies for each pseudo-component from four isoconversional methods was comparable, showing an increasing order of PS-HC (157.70 kJ/mol) < PS-CL (182.53 kJ/mol) < PS-LG (228.87 kJ/mol). The master-plots method indicated that the reaction mechanisms followed 3rd, 1st and 4th order models, respectively. Positive values for ΔH (152.59, 177.17, and 224.43 kJ/mol) and ΔG (157.47, 176.99, and 190.47 kJ/mol) indicated higher energy barriers, especially for PS-LG, and lower spontaneity of the conversion process. These results highlighted the energy potential of SBB as a feedstock for bioenergy production and provided valuable insights into reactor design and process optimization for large-scale application.

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沙棘枝生物能源潜力：多组分热解动力学和热力学研究

研究了沙棘枝（SBB）生物质的多组分热解动力学和热力学，以评价其生物能源潜力。热重分析结合Fraser-Suzuki反褶积鉴定出3个伪组分（PS-HC、PS-CL和PS-LG），峰值温度分别为283-305℃、344-366℃和400-422℃。Py-GC/MS分析表明，C16-C28烷烃和酸是主要产物，与FTIR分析中明显的C- h和C=O基团振动一致。四种等转化方法得到的各伪组分活化能具有可比性，PS-HC (157.70 kJ/mol) <；PS-CL (182.53 kJ/mol) <；PS-LG （228.87 kJ/mol）。主图法表明，反应机理分别符合三阶、一阶和四阶模型。ΔH（152.59、177.17和224.43 kJ/mol）和ΔG（157.47、176.99和190.47 kJ/mol）的正值表明能量势垒较高，特别是PS-LG，而转化过程的自发性较低。这些结果突出了SBB作为生物能源生产原料的能源潜力，并为大规模应用的反应器设计和工艺优化提供了有价值的见解。

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来源期刊

Renewable Energy 工程技术-能源与燃料

CiteScore

18.40

自引率

9.20%

发文量

1955

审稿时长

6.6 months

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