Environmental Trade-Offs of Direct Air Capture Technologies in Climate Change Mitigation Toward 2100

Yang Qiu, Vassilis Daioglou, Noah McQueen, Harmen-Sytze de Boer, Mathijs Harmsen, Jennifer Wilcox, Patrick Lamers, Andre Bardow, Sangwon Suh

Research output: Contribution to journalArticlepeer-review

46 Scopus Citations

Abstract

Direct air capture (DAC) is critical for achieving stringent climate targets, yet the environmental implications of its large-scale deployment have not been evaluated in this context. Performing a prospective life cycle assessment for two promising technologies in a series of climate change mitigation scenarios, we find that electricity sector decarbonization and DAC technology improvements are both indispensable to avoid environmental problem-shifting. Decarbonizing the electricity sector improves the sequestration efficiency, but also increases the terrestrial ecotoxicity and metal depletion levels per tonne of CO2 sequestered via DAC. These increases can be reduced by improvements in DAC material and energy use efficiencies. DAC exhibits regional environmental impact variations, highlighting the importance of smart siting related to energy system planning and integration. DAC deployment aids the achievement of long-term climate targets, its environmental and climate performance however depend on sectoral mitigation actions, and thus should not suggest a relaxation of sectoral decarbonization targets.

Original languageAmerican English
Article numberArticle No. 3635
Number of pages13
JournalNature Communications
Volume13
Issue number1
DOIs
StatePublished - Dec 2022

Bibliographical note

Publisher Copyright:
© 2022, The Author(s).

NREL Publication Number

  • NREL/JA-6A20-79970

Keywords

  • carbon dioxide removal
  • climate change
  • decarbonization
  • direct air capture
  • life cycle assessment
  • negative emission technology
  • United States

Fingerprint

Dive into the research topics of 'Environmental Trade-Offs of Direct Air Capture Technologies in Climate Change Mitigation Toward 2100'. Together they form a unique fingerprint.

Cite this