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

Year 2019, Volume: 6 Issue: 2, 186 - 191, 08.08.2019

Akash Talapatra

https://doi.org/10.30897/ijegeo.526921

Cited By: 2

Abstract

An anion exchangeable resin sorbent originated from amine was
used to capture & absorb CO₂ from atmospheric air. The sorbent
is capable to absorb CO₂ gas in dry location, though it releases CO₂
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 CO₂. Its capacity of absorption in the form of carbonate ion is
0.86 mol/kg, which is identical to nearing of 21 liter of CO₂ gas
under 100 kPa & 25⁰C. Langmuir equation detailed the
absorption isotherm better at higher saturation. The kinetic desorption of CO₂
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

References

• Climate Change Indicators in the United States. (2011). US. Environmental Protection Agency.http://www.epa.gov/climatechange/indicators/pdfs/ClimateIndicators_full.pdf (accessed August 20, 2011).Climate Change. (2007). Synthesis Report; Intergovernmental Panel on Climate Change: Geneva, Switzerland.IPCC. (2005). IPCC special report on Carbon Dioxide Capture and Storage; Prepared by working group III of the Intergovernmental Panel on Climate Change: Cambridge University Press, Cambridge, United Kingdom and NewYork,USA. http://www.ipcc-wg3.de/publications/special-reports/special-report-on-carbondioxide-capture-and-storage (accessed August 20, 2011).
• Lackner, K. S. (2009). Capture of carbon dioxide from ambient air. Eur. Phys. J. Special Topics., 176 (1), 93-1063.
• Stolaroff, J. K., Keith, D. W. & Lowry G. V. (2008). Carbon dioxide capture from atmospheric air using sodium hydroxide spray. Environ. Sci .Technol., 42(8), 2728-2735.