Current status and pillars of direct air capture technologies

Below zero

“…with solar PV from the already built environment [21], additional land conversion is negligible [70]. There are different DAC technologies available, some already at pilot scale and others in development [71][72][73][74][75][76].…”

“…69 When powering direct air capture (DAC) with solar PV from the already built environment, 21 additional land conversion is negligible. 70 There are different DAC technologies available, some already at pilot scale and others in development. [71][72][73][74][75][76] When powered with renewable energy, DAC has negligible C emissions stemming from the production of the materials contained in the infrastructure, 77,78 which can also be avoided by decarbonising the supply chains.…”

Evaluation of amine-based solid adsorbents for direct air capture: a critical review

“…3,4 In fact more than 2000 Gt CO 2 has been emitted by humans since the Industrial Revolution. 5 This has increased the earth's average temperature by 0.6 to 1 °C. Without any intermediate strategy for negative carbon emissions, the current global GHG emission is expected to increase by about 11% by 2030, compared to 2010 levels.…”

“…located anywhere) and essential for achieving net-zero and thus is now accepted by the world leaders meet at Glasgow (for COP 26). 5 Planting trees and rewilding are not enough to reduce the CO 2 content in the air up to a permissible limit. Instead, developing cost-effective DAC technology and reducing fossil fuel usage may be a solution to achieve net-zero.…”

Below Zero

“…Direct air capture Capturing CO 2 directly from the ambient air is energy intensive, but in contrast to bio-based solutions nearly independent of land availability [68]. When powering direct air capture (DAC) with solar PV from the already built environment [21], additional land conversion is negligible [69]. There are different DAC technologies available, some already at pilot scale and others in development [70][71][72][73][74][75].…”