(506b) Direct Air Capture of CO2 Using Zeolites

Direct Air Capture (DAC) of CO₂ has been an emerging field over the past two decades. It originally started being investigated by using NaOH solutions to absorb CO₂. Today, many researchers are looking into grafting or impregnating amines onto adsorbents. However, in this field, there has yet to be a thorough investigation into using zeolites for DAC of CO₂ even though industry currently uses them in a similar process in air pre-purification.

This presentation will include an experimental analysis of CO₂ capturefrom ambient air using vacuum temperature swing adsorption (VTSA) as a means to capture and effectively reduce the amount of CO₂ in the atmosphere as well as to produce high purity CO₂. Commercially available zeolites have been screened using gravimetric analysis and breakthrough experiments to determine which adsorbent would be the most industrially and economically feasible one for a DAC of CO₂ plant.