An et al. (2023): A comprehensive review on regeneration strategies for direct air capture

Keju An, Kai Li, Cheng-Min Yang, Jamieson Brechtl, Kashif Nawaz IN: Journal of CO2 Utilization 76, 102587,

Direct air capture (DAC) technologies require high regeneration energy to release CO2 from sorbents. Various approaches have been tested and optimized for different DAC systems. This review demonstrates that the work equivalent regeneration energy demand (supported by either the electric grid or fossil fuel combustion) ranges from 0.5–18.75 GJ/t-CO2 for solid sorbent DAC systems and 0.62–17.28 GJ/t-CO2 for liquid solvent DAC systems.