Korea-Australia Rheology Journal

The Korean Society of Rheology (한국유변학회)
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Effect of elasticity of aqueous colloidal silica solution on chemical absorption of carbon dioxide with 2-amino-2-methyl-1-propanol

  • Park, Sang-Wook (Division of Chemical Engineering, Pusan National University) ;
  • Choi, Byoung-Sik (Division of Chemical Engineering, Pusan National University) ;
  • Lee, Jae-Wook (Department of Chemical Engineering, Sogang University)
  • Published : 2006.09.30
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Abstract

Carbon dioxide was absorbed into the aqueous nanometer sized colloidal silica solution of 0-31 wt% and 2-amino-2-methyl-1-propanol of $0-2kmol/m^3$ in a flat-stirred vessel with the impeller of various sizes and speeds at $25^{\circ}C$ and 0.101 MPa to measure the absorption rate of $CO_2$. The volumetric liquid-side mass transfer coefficient$(k_La)\;of\;CO_2$ was used to obtain the empirical correlation formula containing the rheological behavior of the aqueous colloidal silica solution. Reduction of the measured $k_La$ was explained by the viscoelastic properties of the aqueous colloidal silica solution. The theoretical value of the absorption rate of $CO_2$ was estimated from the model based on the film theory accompanied by chemical reaction and compared with the measured value.

Keywords

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