화학공학소재연구정보센터
홈 로그인 로그아웃 연락처 사이트맵
Korea-Australia Rheology Journal, Vol.21, No.2, 109-117, June, 2009
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Effect of the rheological properties of aqueous xanthan gum solution on chemical absorption of carbon dioxide with diisopropanolamine
Young-Sik Son, Sang-Wook Park†, Dae-Won Park, and Jae-Wook Lee1
  • Division of Chemical Engineering, Pusan National University, Busan 609-735, Korea
  • 1Department of Chemical and Biomolecular Engineering, Sogang University, Seoul 121-742, Korea
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Absorption rate of carbon dioxide was measured in the aqueous xanthan gum (XG) solution in the range of 0~ 0.15 wt% containing diisopropanolamine (DIPA) of 0~ 2 kmol/m3 in a flat-stirred vessel with an impeller of 0.05 m and agitation speed of 50 rpm at 25 ℃ and 101.3 kPa. The volumetric liquid-side mass transfer coefficient (k(L)a) of CO2, which was obtained by the measured physical absorption rate, was correlated with the viscosity and the elastic behavior of XG solution such as Deborah number as an empirical formula. The chemical absorption rate of CO2 (R(A)), which was estimated by the film theory using the measured k(L)a and the known kinetics of reaction between CO2 and DIPA, was compared with the measured rate. The aqueous XG solution with elastic property of non-Newtonian liquid made k(L)a and R(A) increased compared with Newtonian liquid based on the same viscosity of the solution.
Keywords:absorption;carbon dioxide;xanthan gum;viscoelastic liquid;diisopropanolamine
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