Thermodynamic and Kinetic Desorption Analysis on Direct Air Capture of CO2 Gas Using Moisture Swing Sorbent

Authors : Akash TALAPATRA

Pages : 186-191

Doi:10.30897/ijegeo.526921

View : 101 | Download : 10

Publication Date : 2019-08-08

Article Type : Review Paper

Abstract :An anion exchangeable resin sorbent originated from amine was used to capture & absorb CO 2 from atmospheric air. The sorbent is capable to absorb CO 2 gas in dry location, though it releases CO 2 gas when it is exposed to water vapor or liquid water. The isotherm test on absorption provides the evidence that the sorbent can act effectively at the very low concentration of CO 2 . Its capacity of absorption in the form of carbonate ion is 0.86 mol/kg, which is identical to nearing of 21 liter of CO 2 gas under 100 kPa & 25 ⁰ C. Langmuir equation detailed the absorption isotherm better at higher saturation. The kinetic desorption of CO 2 spread over in a flat polypropylene sheet has been practiced by the well developed models & experiments. After that, the desorption coefficient, kinetic desorption parameters & stimulated energy are estimated with that equation & model. Finally more experiments should be developed to find out the exact reaction mechanism on this method with accumulating new information.
Keywords : Carbon Capture, Moisture Swing, Kinetic Desorption

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