气候变化领域集成服务门户(CCPortal): Life cycle assessment of carbon dioxide removal technologies: A critical review

CCPortal

DOI	10.1039/d0ee03757e
	Life cycle assessment of carbon dioxide removal technologies: A critical review
	Terlouw T.; Bauer C.; Rosa L.; Mazzotti M.
发表日期	2021
ISSN	17545692
起始页码	1701
结束页码	1721
卷号	14 期号:4
英文摘要	A large number of prospective climate scenarios rely on Carbon Dioxide Removal (CDR) technologies to limit global warming below 2 °C. To date, however, a comprehensive understanding of the overall life-cycle environmental impacts of CDR technologies is missing. We present a critical review on conducted Life Cycle Assessments (LCAs) of a comprehensive set of CDR technologies: afforestation and reforestation, biochar, soil carbon sequestration, enhanced weathering, ocean fertilisation, bioenergy with carbon capture and storage, and direct air carbon capture and storage. One of the key observations is that emissions avoided due to substitution of certain processes (due to system expansion in LCA) can be easily misinterpreted as negative emissions, i.e. as carbon removal from the atmosphere. Based on the observed inconsistencies and shortcomings, we recommend to interpret available CDR LCA results with caution. To improve the understanding of environmental implications of CDR deployment, we recommend (1) to conduct LCAs with multiple environmental impact categories, (2) to consider the temporal aspect of emissions in biomass-related CDR technologies, (3) to focus on so far overlooked CDR technologies, (4) to be as transparent as possible regarding methodological choices, (5) to capture environmental side-effects, and (6) to distinguish between 'avoided emissions' and 'negative emissions'-only negative emissions correspond to permanent removal from the atmosphere. We conclude that more comprehensive and rigorous LCAs are needed to help inform the design of CDR technology portfolios and to aid in anticipatory governance. This journal is © The Royal Society of Chemistry.
英文关键词	Biomass; Carbon capture; Carbon dioxide; Carbon dioxide process; Clock and data recovery circuits (CDR circuits); Environmental impact; Environmental technology; Global warming; Reforestation; Avoided emissions; Carbon dioxide removal; Environmental implications; Life Cycle Assessment (LCA); Life-cycle environmental impact; Ocean fertilisation; Soil carbon sequestration; Technology portfolios; Life cycle; carbon dioxide; environmental technology; life cycle analysis; literature review; reduction
语种	英语
来源期刊	Energy & Environmental Science
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/190700
作者单位	Paul Scherrer Institut, Laboratory for Energy Systems Analysis, Villigen PSI, 5232, Switzerland; Institute of Energy and Process Engineering, ETH Zürich, Zürich, 8092, Switzerland
推荐引用方式 GB/T 7714	Terlouw T.,Bauer C.,Rosa L.,et al. Life cycle assessment of carbon dioxide removal technologies: A critical review[J],2021,14(4).
APA	Terlouw T.,Bauer C.,Rosa L.,&Mazzotti M..(2021).Life cycle assessment of carbon dioxide removal technologies: A critical review.Energy & Environmental Science,14(4).
MLA	Terlouw T.,et al."Life cycle assessment of carbon dioxide removal technologies: A critical review".Energy & Environmental Science 14.4(2021).