添加剂对生物质储存和热解的影响：温室气体减排和生物炭性质变化

IF 5.8 2区生物学 Q1 AGRICULTURAL ENGINEERING

Biomass & Bioenergy Pub Date : 2025-04-02 DOI:10.1016/j.biombioe.2025.107828

Yukai Guo , Mengjiao Tan , Yi Zhu , Wenjing Yang , Tingzhou Lei , Zhongliang Huang , Zhihong Xiao , Zijian Wu , Hui Li

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引用次数: 0

摘要

本研究通过考察三种添加剂（Ca(H2PO4)2、CaO和MgO）对原料在贮存30 d期间特性变化和温室气体排放的影响，并分析其随后的热解行为和生物炭特性，了解添加剂对生物质贮存和热解过程的影响。3种添加剂均能有效降低生物质储存过程中的温室气体排放和干物质损失。添加CaO的运行实现了最低的温室气体排放和干物质损失。贮藏30 d降低了生物质挥发分、碳、氢、氧含量，增加了灰分和固定碳含量。添加剂中的碱土金属（Ca和Mg）促进了焦炭的形成。无添加剂储存生物炭的XRD结构呈无定形，比表面积最低（34.92 m2/g），添加Ca(H2PO4)2使生物炭产率提高2.10倍，比表面积达到472.73 m2/g，促进了大量微孔的生成。此外，添加剂还改善了木屑生物炭上新的官能团和衍射峰（如Ca2P2O7、MgO）的出现。因此，使用添加剂储存可能是一种有效的生物质升级策略。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

The effect of additives on the storage and pyrolysis of biomass: Greenhouse gas reduction and biochar's properties variation

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The effect of additives on the storage and pyrolysis of biomass: Greenhouse gas reduction and biochar's properties variation

In this study, the influence of three kinds of additives (Ca(H₂PO₄)₂, CaO, and MgO) on the variation of characteristics and GHG emissions of feedstock during 30-days storage was investigated and the subsequent pyrolysis behavior and biochar properties were also analyzed, aiming to understand the impact of additives on storage and pyrolysis process of biomass. The three additives effectively reduced GHG emissions and dry matter loss of biomass during storage. The runs of CaO addition achieved the lowest GHG emission and dry matter loss. 30-days storage reduced the volatile matter, carbon, hydrogen, and oxygen content of biomass, and increased the ash and fixed carbon content. The alkaline earth metals (Ca and Mg) in additive promoted the formation of coke. Additive-free storage biochar exhibited an amorphous XRD structure and a lowest specific surface area (34.92 m²/g), The Ca(H₂PO₄)₂ addition increased the biochar yield 2.10 times, increased the specific surface area to 472.73 m²/g, and promoted the generation of a large number micropore. In addition, additives improved to the appearance of new functional groups and diffraction peaks (such as Ca₂P₂O₇, MgO) on sawdust biochar. Therefore, the use of additive storage may be an effective biomass upgrading strategy.

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来源期刊

Biomass & Bioenergy 工程技术-能源与燃料

CiteScore

11.50

自引率

3.30%

发文量

258

审稿时长

60 days

期刊介绍： Biomass & Bioenergy is an international journal publishing original research papers and short communications, review articles and case studies on biological resources, chemical and biological processes, and biomass products for new renewable sources of energy and materials. The scope of the journal extends to the environmental, management and economic aspects of biomass and bioenergy. Key areas covered by the journal: • Biomass: sources, energy crop production processes, genetic improvements, composition. Please note that research on these biomass subjects must be linked directly to bioenergy generation. • Biological Residues: residues/rests from agricultural production, forestry and plantations (palm, sugar etc), processing industries, and municipal sources (MSW). Papers on the use of biomass residues through innovative processes/technological novelty and/or consideration of feedstock/system sustainability (or unsustainability) are welcomed. However waste treatment processes and pollution control or mitigation which are only tangentially related to bioenergy are not in the scope of the journal, as they are more suited to publications in the environmental arena. Papers that describe conventional waste streams (ie well described in existing literature) that do not empirically address ''new'' added value from the process are not suitable for submission to the journal. • Bioenergy Processes: fermentations, thermochemical conversions, liquid and gaseous fuels, and petrochemical substitutes • Bioenergy Utilization: direct combustion, gasification, electricity production, chemical processes, and by-product remediation • Biomass and the Environment: carbon cycle, the net energy efficiency of bioenergy systems, assessment of sustainability, and biodiversity issues.