气候变化领域集成服务门户(CCPortal): Current status and pillars of direct air capture technologies

CCPortal

DOI	10.1016/j.isci.2022.103990
	Current status and pillars of direct air capture technologies
	Ozkan, Mihrimah; Nayak, Saswat Priyadarshi; Ruiz, Anthony D.; Jiang, Wenmei
发表日期	2022
EISSN	2589-0042
卷号	25 期号:4
英文摘要	Climate change calls for adaptation of negative emission technologies such as direct air capture (DAC) of carbon dioxide (CO2) to lower the global warming impacts of greenhouse gases. Recently, elevated global interests to the DAC technologies prompted implementation of new tax credits and new policies worldwide that motivated the existing DAC companies and prompted the startup boom. There are presently 19 DAC plants operating worldwide, capturing more than 0.01 Mt CO2/year. DAC active plants capturing in average 10,000 tons of CO2 annually are still in their infancy and are expensive. DAC technologies still need to improve in three areas: 1) Contactor, 2) Sorbent, and 3) Regeneration to drive down the costs. Technology-based economic development in all three areas are required to achieve <$100/ton of CO2 which makes DAC economically viable. Current DAC cost is about 2-6 times higher than the desired cost and depends highly on the source of energy used. In this review, we present the current status of commercialDACtechnologies and elucidate the five pillars of technology including capture technologies, their energy demand, final costs, environmental impacts, and political support. We explain processing steps for liquid and solid carbon capture technologies and indicate their specific energy requirements. DAC capital and operational cost based on plant power energy sources, land andwater needs of DAC are discussed in detail. At 0.01Mt CO2/year capture capacity, DAC alone faces a challenge tomeet the rates of carbon capture described in the goals of the Paris Agreement with 1.5-2 degrees C of global warming. However, DAC may partially help to offset difficult to avoid annual emissions from concrete (similar to 8%), transportation (similar to 24%), iron-steel industry (similar to 11%), and wildfires (similar to 0.8%).
语种	英语
WOS研究方向	Multidisciplinary Sciences
WOS类目	Science Citation Index Expanded (SCI-EXPANDED)
WOS记录号	WOS:000819870000003
来源期刊	ISCIENCE
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/281049
作者单位	University of California System; University of California Riverside; University of California System; University of California Riverside; University of California System; University of California Riverside
推荐引用方式 GB/T 7714	Ozkan, Mihrimah,Nayak, Saswat Priyadarshi,Ruiz, Anthony D.,et al. Current status and pillars of direct air capture technologies[J],2022,25(4).
APA	Ozkan, Mihrimah,Nayak, Saswat Priyadarshi,Ruiz, Anthony D.,&Jiang, Wenmei.(2022).Current status and pillars of direct air capture technologies.ISCIENCE,25(4).
MLA	Ozkan, Mihrimah,et al."Current status and pillars of direct air capture technologies".ISCIENCE 25.4(2022).