Direct Capture of CO2 from Ambient Air 2016 PDF

Traditional modes of carbon capture such as pre-combustion and post-combustion CO2 capture from large point sources can help slow the rate of increase of the atmospheric CO2 concentration, but only the direct removal of CO2 from the air, or “direct air capture” (DAC), can actually reduce the global atmospheric CO2 concentration. The past decade has seen a steep rise in the use of chemical sorbents that are cycled through sorption and desorption cycles for CO2 removal from ultra-dilute gases such as air.