The release of carbon dioxide from fuel combustion into the atmosphere is one of the leading causes of global warming. The existing technologies for the capture of CO2 suffer from various economical drawbacks and new technologies are desired. According to a report by US Energy Information Administration (EIA), the amount of CO2 released in 1980 was 18,500 million metric tons and it increased to 29,195 million metric tons in 20061. Concerns have prompted countries to meet at the 17th Conference of the Parties (COP 17) to the UN Framework Convention on Climate Change (UNFCCC) in December 2011 to once again discuss a method to reduce the emission of global warming gases into the atmosphere.Amine-based sorbents are commercially utilized, but they have numerous disadvantages, including steam loss due to solvent regeneration, solvent loss due to vaporization, sensitivity to SOX and O2, and high capital and operating costs. In the present investigation, modified and unmodified sodium-based sorbents were tested for the CO2 capture in a fixed-bed reactor under simulated flue gas conditions. The performance of the sorbents was tested at various carbonation temperatures and water concentrations. A very high performance has been achieved for the modified sorbents compared to unmodified sorbents (7.69 mol of CO2/kg of Na2CO3). The sorbent was also demonstrated to retain its high capacity for multiple cycles.

High performance carbonate-based sorbents for the capture of CO<sub>2</sub>

244th National Meeting (2012)

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High performance carbonate-based sorbents for the capture of CO2

High performance carbonate-based sorbents for the capture of CO₂