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Direct air capture: process technology, techno-economic and socio-political challenges

Lookup NU author(s): Dr Greg MutchORCiD

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This work is licensed under a Creative Commons Attribution 4.0 International License (CC BY 4.0).

Abstract

Climate change mitigation scenarios that meet the Paris Agreement's objective of limiting global warming usually assume an important role for carbon dioxide removal and negative emissions technologies. Direct air capture (DAC) is a carbon dioxide removal technology which separates CO₂ directly from the air using an engineered system. DAC can therefore be used alongside other negative emissions technologies, in principle, to mitigate CO₂ emissions from a wide variety of sources, including those that are mobile and dispersed. The ultimate fate of the CO₂, whether it is stored, reused, or utilised, along with choices related to the energy and materials inputs for a DAC process, dictates whether or not the overall process results in negative emissions. In recent years, DAC has undergone significant technical development, with commercial entities now operating in the market and prospects for significant upscale. Here we review the state-of-the-art to provide clear research challenges across the process technology, techno-economic and socio-political domains.

Publication metadata

Author(s): Erans M, Sanz-Perez ES, Hanak DP, Clulow Z, Reiner DM, Mutch GA

Publication type: Article

Publication status: Published

Journal: Energy & Environmental Science

Year: 2022

Volume: 15

Pages: 1360-1405

Online publication date: 28/02/2022

Acceptance date: 07/02/2022

Date deposited: 28/02/2022

ISSN (electronic): 1754-5706

Publisher: Royal Society of Chemistry

URL: https://doi.org/10.1039/D1EE03523A

DOI: 10.1039/D1EE03523A

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