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http://dx.doi.org/10.4491/KSEE.2017.39.11.607

Effect of Carbonic Anhydrase on CO2 Absorption in Amine Solutions for CO2 Capture  

Lee, In-Young (KEPCO Research Institute)
Kwak, No-Sang (KEPCO Research Institute)
Publication Information
Journal of Korean Society of Environmental Engineers / v.39, no.11, 2017 , pp. 607-612 More about this Journal
Abstract
The effect of carbonic anhydrase on $CO_2$ absorption rates and the heat of reaction were evaluated in various amine solutions for post combustion $CO_2$ capture process. The $CO_2$ absorption rate was analyzed in 30 wt% MEA, AMP, DMEA, MDEA aqueous solutions with and without carbonic anhydrase (250 mg/L) from bovine erythrocyte. $CO_2$ absorption rates were increased in all solutions with carbonic anhydrase. The effect of carbonic anhydrase on absorption rates was more in tertiary amine (DMEA and MDEA) solutions than in primary amine (MEA) and hindered amine (AMP) solutions. The heat of reaction of MEA, DMEA, MDEA aqueous solutions with and without carbonic anhydrase were measured using reaction calorimeter. Carbonic anhydrase decreased the heat of absorption in all solutions. The results suggested that tertiary amines that have the excellent desorption ability were suitable for applying carbonic anhydrase to the post combustion $CO_2$ capture process and the effect of carbonic anhydrase was best in MDEA solution.
Keywords
$CO_2$ Capture; Amine; Carbonic Anhydrase; Adsorption Rates; Heat of Reaction;
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