作物残茬-生物炭固碳系统技术经济及排放影响评价

Q1 Environmental Science

Bioresource Technology Reports Pub Date : 2025-05-17 DOI:10.1016/j.biteb.2025.102145

Abhijeet Anand , Vivek Kumar , Priyanka Kaushal

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引用次数: 0

摘要

尽管有一些技术、经济和政策层面的干预措施，收获后作物秸秆就地焚烧仍然是印度农业系统的现实，带来了许多可持续性挑战。在这项研究中，作者根据欧洲生物炭证书指南，优化了热解参数，以生产最适合碳封存（CS）的生物炭。对作物秸秆生物炭转化及其在农业生产中的应用进行了生命周期分析，以验证其环境可持续性和经济可行性。实验分析表明，在650°C (RSB650 &；WSB650)和600℃下生产的甘蔗顶、叶生物炭（STLB600）最适合CS。拟议路径的LCA显示，排放量比当前情景低72.4%，经通货膨胀调整后的年成本为5.562亿美元，相当于在拟议路径下生物炭净年碳信用货币化24.6美元/TCO2e的成本达到收支平衡。

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Techno-economic and emission impact evaluation of crop residues-biochar system for carbon sequestration

Despite several technical, economic and policy-level interventions, post-harvest crop residue in-situ burning remains a reality in the Indian agricultural system, posing numerous sustainability challenges. In this research, authors optimized pyrolysis parameters to produce the most suitable biochar for carbon sequestration (CS) using the European Biochar Certificate guidelines. Life cycle analysis (LCA) of biochar conversion of crop residues and its application for CS was done to check its environmental sustainability and economic viability. Experimental analysis showed that rice and wheat straw biochar produced at 650 °C (RSB650 & WSB650) and sugarcane top and leaf biochar produced at 600 °C (STLB600) are the most suitable for CS. LCA of the proposed pathway showed ∼72.4 % lower emission than the current scenario and 556.2 million USD inflation-adjusted annual cost, equivalent to break even at 24.6 USD/TCO₂e carbon credit monetization of net annual CS from biochar under the proposed pathway.

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