Carbon dioxide (CO2) capture experiments were conducted at ambient conditions in varying weight % alkali solutions. Initial experiments were conducted in 1000 ml Erlenmeyer flasks to determine the optimal amount of alkali in solution to be used on a pilot scale. It was concluded that a 2% alkali solution, by weight, was the most efficient solution for capturing CO2. The solution was able to absorb 0.5 kg CO2/kg alkali (0.5 lb CO2/lb alkali). Pilot scale studies were conducted to determine the feasibility of using an alkali solution on an industrial scale to capture CO2. Pilot scale studies were carried out in a wet scrubber to mimic industrial desulfurization processes used at fossil fueled power plants. The ability to retrofit a carbon dioxide capture scheme to existing plant equipment will reduce the economic burden placed on a company to employ the technology. The scrubber was constructed using 0.101 meter (4 inch) inside diameter black steel and PVC piping. The scrubber was packed with 8 x 8 mm (0.315 x 0.315 inch) borosilicate glass raschig rings to a depth of 1.22 meters (4 feet). Pilot scale studies have shown that the optimal alkali solution can continuously capture up to 50% of the total CO2 being fed to the scrubber.
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This page was last modified on August 26th, 2013
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