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首页> 外文期刊>Environmental Science & Technology >Prospective Life Cycle Assessment of Large-Scale Biochar Production and Use for Negative Emissions in Stockholm
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Prospective Life Cycle Assessment of Large-Scale Biochar Production and Use for Negative Emissions in Stockholm

机译：斯德哥尔摩负排放大规模生物炭生产的预期生命周期评估

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摘要

Several cities in Sweden are aiming for climate neutrality within a few decades and for negative emissions thereafter. Combined biochar, heat, and power production is an option to achieve carbon sequestration for cities relying on biomass-fuelled district heating, while biochar use could mitigate environmental pollution and greenhouse gas emissions from the agricultural sector. By using prospective life cycle assessment, the climate impact of the pyrolysis of woodchips in Stockholm is compared with two reference scenarios based on woodchip combustion. The pyrolysis of woodchips produces heat and power for the city of Stockholm, and biochar whose potential use as a feed and manure additive on Swedish dairy farms is explored. The climate change mitigation trade-off between bioenergy production and biochar carbon sequestration in Stockholm's context is dominated by the fate of marginal power. If decarbonisation of power is achieved, building a new pyrolysis plant becomes a better climate option than conventional combustion. Effects of cascading biochar use in animal husbandry are uncertain but could provide 10-20% more mitigation than direct biochar soil incorporation. These results help design regional biochar systems that combine negative carbon dioxide emissions with increased methane and nitrous oxide mitigation efforts and can also guide the development of minimum performance criteria for biochar products.
机译：瑞典的几个城市旨在在几十年内和此后的负面排放的气候中立。生物炭，热量和电力生产结合是实现依托生物质燃料区供暖的城市碳封存的选择，而生物炭用途可以减轻农业部门的环境污染和温室气体排放。通过使用前瞻性生命周期评估，与基于木片燃烧的两种参考场景进行了比较斯德哥尔摩中木芯片热解的气候影响。 Woodchips的热解产生了斯德哥尔摩市的热量和动力，并探讨了瑞典乳制品农场潜在用途作为饲料和肥料添加剂的生物炭。斯德哥尔摩背景下生物能源生产和生物炭碳封存之间的气候变化减缓折衷是由边缘力量的命运主导。如果达到功率的脱碳，建立新的热解厂比传统燃烧更好的气候选择。级联Biochar在畜牧业中的影响是不确定的，但可以提供比直接生物炭土壤掺入更加缓解10-20％。这些结果有助于设计区域生物炭系统，将负二氧化碳排放与增加的甲烷和一氧化二氮缓解努力相结合，也可以指导生物炭产品的最低绩效标准的发展。

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  • 来源
    《Environmental Science & Technology》 |2019年第14期|8466-8476|共11页
  • 作者

    Azzi Elias S.; Karltun Erik; Sundberg Cecilia;

  • 作者单位

    KTH Royal Inst Technol Dept Sustainable Dev Environm Sci & Engn SEED S-10044 Stockholm Sweden;

    Swedish Univ Agr Sci SLU Dept Soil & Environm S-75007 Uppsala Sweden;

    KTH Royal Inst Technol Dept Sustainable Dev Environm Sci & Engn SEED S-10044 Stockholm Sweden|Swedish Univ Agr Sci SLU Dept Energy & Technol S-75007 Uppsala Sweden;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);美国《化学文摘》(CA);
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  • 正文语种 eng
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