Prospective contributions of biomass pyrolysis to China's 2050 carbon reduction and renewable energy goals.

Prospective contributions of biomass pyrolysis to China's 2050 carbon reduction and renewable energy goals.
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DOI:
10.1038/s41467-021-21868-z
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发表时间:
2021-03-16
影响因子:
16.6
通讯作者:
McElroy MB
McElroy MB
中科院分区:
综合性期刊1区
文献类型:
--
作者:
Yang Q;Zhou H;Bartocci P;Fantozzi F;Mašek O;Agblevor FA;Wei Z;Yang H;Chen H;Lu X;Chen G;Zheng C;Nielsen CP;McElroy MB

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认识到生物能源与碳捕获和储存(BECCS)可能仍需要数年才能成熟,本研究重点关注另一种基于光合作用的负碳技术,该技术更容易在中国实施:生物质中间热解多联产(BIPP)。在这里,我们发现BIPP系统可以在没有补贴的情况下盈利,而其全国部署可以使2030年单位国内生产总值的碳排放量比2005年减少61%,并导致空气污染物排放量的减少。在2020年至2030年期间,全国73%的作物秸秆被利用,到2050年,累计温室气体减排量可达86.2亿吨二氧化碳当量,占BECCS全球温室气体减排目标的13%-31%,比BECCS单独在中国的预测多近45.55亿吨。因此,中国的BIPP部署可能对实现国家和全球温室气体减排目标产生重要影响。生物质碳封存的BIPP是一项在中国即将实施的负排放技术。在这里,作者表明,与2005年相比,到2030年,其国家部署可以使单位GDP的碳排放量减少61%,并为2050年全球生物质负排放目标贡献13-31%。
Recognizing that bioenergy with carbon capture and storage (BECCS) may still take years to mature, this study focuses on another photosynthesis-based, negative-carbon technology that is readier to implement in China: biomass intermediate pyrolysis poly-generation (BIPP). Here we find that a BIPP system can be profitable without subsidies, while its national deployment could contribute to a 61% reduction of carbon emissions per unit of gross domestic product in 2030 compared to 2005 and result additionally in a reduction in air pollutant emissions. With 73% of national crop residues used between 2020 and 2030, the cumulative greenhouse gas (GHG) reduction could reach up to 8620 Mt CO2-eq by 2050, contributing 13–31% of the global GHG emission reduction goal for BECCS, and nearly 4555 Mt more than that projected for BECCS alone in China. Thus, China’s BIPP deployment could have an important influence on achieving both national and global GHG emissions reduction targets. BIPP with biochar sequestration is a ready-to-implement negative emission technology in China. Here, the authors show that its national deployment could contribute to a 61% reduction of carbon emissions per GDP in 2030 compared to 2005, and contribute 13–31% of the global biomass-based negative emission goal by 2050.
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