中国沼气2026，Vol.44Issue(2)：78-84,7.DOI:10.20022/j.cnki.1000-1166.2026020078
秸秆能源化主要方式碳足迹分析
Carbon Footprint Analysis of Straw Energy Conversion Methods
摘要
Abstract
In order to describe the carbon footprint of the main energy utilization scenarios of straw in China,this study ex-plores the economic and environmental benefits of three utilization modes of straw biogas,pyrolysis carbonization and direct combustion power generation.Through the construction of carbon emission assessment boundary and analysis method,the influence of different links on the final net emission reduction effect and the main constraints are clarified.The results showed that the net carbon emissions of biogas utilization,pyrolysis biochar and direct-fired power generation were-1.238 kgCO2·kg-1,-0.624 kgCO2·kg-1 and-0.553 kgCO2·kg-1,respectively.All of them can reverse the carbon emissions of direct incineration(4.2572 kgCO2·kg-1).The impact potential values on environmental acidification were 0.0016 kg·a-1,0.0165 kg·a-1and 0.01425 kg·a-1,respectively,and the impact potential values on human toxicity were 0.732 kg·a-1,1.65 kg·a-1 and 1.5615 kg·a-1,respectively.Biogas utilization has the least impact on the environment.Under the existing conditions,the three models are in a state of loss.When the carbon price reaches 22.0 CNY·t-1,the three models begin to make profits,and the marginal profits are 7.47 CNY,4.396 CNY and 4.26 CNY,respectively.In sum-mary,the advantages of biogas utilization are obvious,and the application of pyrolysis carbonization and direct combustion power generation according to local conditions is still economically feasible.关键词
减排/温室气体/废弃物/能源利用Key words
emission reduction/greenhouse gases/waste/energy utilization分类
资源环境引用本文复制引用
黄娅,牟越,陈秋文,左耀国,李公义,陈证繁,罗涛,朱能敏,姚飞..秸秆能源化主要方式碳足迹分析[J].中国沼气,2026,44(2):78-84,7.基金项目
国家重点研发计划课题(2024YFD1700402) （2024YFD1700402）
中国农业科学院科技创新工程(CAAS-ASTIP-2021-BIOMA). （CAAS-ASTIP-2021-BIOMA）
