Direct Air Capture (DAC): Challenges and Opportunities to Meet Climate Targets

There is increasing emphasis on removal of carbon dioxide from the atmosphere as a key strategy for meeting climate change mitigation goals. The two leading approaches are direct air capture and bioenergy with carbon capture. Both can involve either an offset of fossil fuel use or carbon dioxide sequestration, the latter providing a carbon negative result. In this brief review, we discuss the pros and cons of these two systems with emphasis on direct air capture and the approaches employed by the three companies with the most advanced commercial aspirations.