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Received June 10, 2011
Accepted September 23, 2011
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Absorption of carbon dioxide into aqueous solution of 2-amino-2-methy-1-propanol and 1, 8-diamino-p-menthane

School of Civil and Environmental Engineering, Pusan National University, Busan 609-735, Korea 1Greenhouse Gas Research Center, Korea Institute of Energy Research, Daejeon 305-343, Korea 2Department of Environmental Administration, Catholic University of Pusan, Busan 609-757, Korea 3School of Chemical and Biomolecular Engineering, Pusan National University, Busan 609-735, Korea
swpark@pusan.ac.kr
Korean Journal of Chemical Engineering, July 2012, 29(7), 946-951(6), 10.1007/s11814-011-0249-4
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Abstract

Carbon dioxide was absorbed into an aqueous solution containing two reactants of 2-amino-2-methyl-1-propanol (AMP) and 1,8-diamino-p-menthane (DAM) in a stirred semi-batch tank with a planar gas-liquid interface within a range of 0-3.0 kmol/m3 of AMP, 0-0.2 kmol/m3 of DAM, and 298.15-323.15 K at 15% of CO2 and 101.3 kPa. Diffusivity, Henry constant and mass transfer coefficient of CO2 in the mixed solution of AMP and DAM were used to calculate the theoretical enhancement factor of CO2, which was obtained by an approximated solution of mass balances_x000D_ with the instantaneous and fast regime in CO2-AMP-DAM system. The method of the classification of the chemical regime in the heterogeneous system was used to determine the enhancement factor by adding DAM under the limited concentration of AMP.

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