Technologies of the energy transition: Direct Air Capture

01 oct 2020
EsadeGeo Center for Global Economy and Geopolitics EsadeGeo

Direct Air Capture (DAC) is a technological process that separates CO2 emissions directly from the air. The source of the captured CO2 makes DAC distinct from Carbon Capture, Use and Storage (CCUS) technologies that trap CO2 emissions directly at the point of emissions (from flue gases). DAC involves using large-scale fans to suck in ambient air, which is then passed through a liquid solvent or solid sorbent to separate CO2, in a concentrated form, from other gases. The resulting captured CO2 can either be used directly (for example, in the beverage industry or to produce synthetic aggregates or synfuels) or stored geologically.