Proposal for direct air capture of CO2 during the Antarctic winter using physisorption
Abstract
The possibility of direct air capture of CO2 in Antarctica is discussed. Because the concentration of H2O in the atmosphere during the Antarctic winter is extremely low, an installation for direct air capture could employ a physisorption-based process, allowing, in principle, a very short adsorption/desorption cycle time. The lower required binding allows more options for materials for the sorbent. With a shorter cycle time, more resource could be spent on structuring the sorbent to improve energy efficiency, for example by improving its mass efficiency if desorption is driven thermally.
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