Physical solubility and diffusivity of N2O and CO2 in aqueous 2-amino-2-methyl-1-propanol blended with piperazine solution

ENVR 155

Won-Joon Choi, cwj96@pusan.ac.kr1, Sang-Sup Lee, sangslee@msn.com2, Jong-Beom Seo1, Ki-Chul Cho1, and Kwang-Joong Oh, kjoh@pusan.ac.kr1. (1) Department of Environmental Engineering, Pusan National University, Jangjeon-dong, Geumjeong-gu, Busan, South Korea, (2) Department of Civil and Environmental Engineering, University of Cincinnati, Cincinnati, OH 45221
Physical solubility and diffusivity of CO2 in amine solutions were determined in a stirred-cell reactor and a cylindrical wetted wall column absorber, respectively. Since the solubility and diffusivity of CO2 cannot be clearly measured because of their chemical reactions, a N2O analogy has been used. The solubility and diffusivity of NO2 in AMP (10, 20, 30 and 40 wt.%) were measured at 293, 303 and 313 K and those of CO2 in the AMP solutions were calculated by using the N2O analogy. Also, a blend of piperazine and AMP was analyzed to determine their solubility and diffusivity for CO2. The relationships of the solubility and the diffusivity with temperature showed good agreements with an exponential equation for all tested solutions.
 

General Papers
6:00 PM-8:00 PM, Wednesday, August 22, 2007 BCEC -- Exhibit Hall - B2, Poster

Division of Environmental Chemistry

The 234th ACS National Meeting, Boston, MA, August 19-23, 2007