Life cycle assessment of urban uses of biochar and case study in Uppsala,Sweden
作者机构：Department of Sustainable DevelopmentEnvironmental Engineeringand Sciences(SEED)KTH Royal Institute of TechnologyTeknikrigen 10B11428 StockholmSweden Department of Soil and EnvironmentSwedish University of Agricultural Sciences(SLU)UppsalaSweden Department of Energy and TechnologySwedish University of Agricultural Sciences(SLU)UppsalaSweden
出 版 物：《Biochar》 (生物炭（英文）)
年 卷 期：2022年第4卷第1期
页 面：889-905页
核心收录：
学科分类：09[农学] 0903[农学-农业资源与环境] 090301[农学-土壤学]
基 金：Sweden's innovation agency(VINNOVA)under grant number 2016-03392
主 题：Biochar Carbon dioxide removal Urban areas Bioeconomy Life cycle assessment Material flow analysis
摘 要：Biochar is a material derived from biomass pyrolysis that is used in urban *** environmental impacts of new biochar products have however not been ***,the life cycle assessments of 5 biochar products(tree planting,green roofs,landscaping soil,charcrete,and biofilm carrier)were performed for 7 biochar supply-chains in 2 energy *** biochar products were benchmarked against reference products and oxidative use of biochar for steel *** demand was then estimated,using dynamic material flow analysis,for a new city district in Uppsala,*** a decarbonised energy system and with high biochar stability,all biochar products showed better climate performance than the reference products,and most applications outperformed biomass use for decarbonising steel *** climate benefits of using biochar ranged from−1.4 to−0.11 tonne CO_(2)-eq tonne−1 biochar in a decarbonised energy *** other environmental impact categories,biochar products had either higher or lower impacts than the reference products,depending on biochar supply chain and material substituted,with trade-offs between sectors and impact ***,several use-phase effects of biochar were not included in the assessment due to knowledge *** Uppsala’s new district,estimated biochar demand was around 1700 m^(3)year^(−1)during the 25 years of *** 2100,23%of this biochar accumulated in landfill,raising questions about end-of-life management of biochar-containing ***,in a post-fossil economy,biochar can be a carbon dioxide removal technology with benefits,but biochar applications must be designed to maximise co-benefits.
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