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Received September 19, 2009
Accepted February 14, 2010
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Absorption of carbon dioxide in aqueous colloidal silica solution with NaOH
Division of Chemical Engineering, Pusan National University, Busan 609-735, Korea 1Department of Environmental Administration, Catholic University of Pusan, Busan 609-737, Korea
swpark@pusan.ac.kr
Korean Journal of Chemical Engineering, September 2010, 27(5), 1570-1575(6), 10.1007/s11814-010-0269-5
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Abstract
The absorption rate (R(A)) of carbon dioxide was measured into an aqueous nanometer-sized colloidal silica solution of 0-31 wt% and NaOH of 0-2 kmol/m3 in a flat-stirred vessel for various sizes and speeds of 25 ℃ and 101.3 N/m2 to obtain the volumetric liquid-side mass transfer coefficient (k(L)a(L)) of CO2. The film theory accompanied by chemical reaction between CO2 and NaOH was used to estimate the theoretical value of absorption rate of CO2. The empirical_x000D_
correlation formula containing the relationship between kLaL and rheological property of the aqueous colloidal silica solution was presented. The value of R(A) in the aqueous colloidal silica solution was decreased by the reduction of k(L)a(L) due to elasticity of the solution.
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Park SW, Choi BS, Kim SS, Lee JW, J. Ind. Eng. Chem., 13(1), 133 (2007)
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Park SW, Choi BS, Oh KJ, Lee JW, J. Chem. Eng. Jpn., 41(7), 540 (2008)
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Hikita H, Asai S,Takatsuka T, Chem. Eng. J., 11, 131 (1976)
Kennard ML, Meisen A, J. Chem. Eng. Data., 29, 309 (1984)
Nijsing RATO, Hendriksz RH, Kramers H, Chem. Eng.Sci., 10, 88 (1959)
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