Absorption of carbon dioxide in aqueous colloidal silica solution with NaOH

作者：Hwang Kyu Suk; Park Sang Wook^*; Park Dae Won; Oh Kwang Joong; Kim Seong Soo

来源：Korean Journal of Chemical Engineering, 2010, 27(5): 1570-1575.

DOI：10.1007/s11814-010-0269-5

• Absorption
• NaOH
• Carbon Dioxide
• Silica
• Viscoelastic Liquid

The absorption rate (RA) of carbon dioxide was measured into an aqueous nanometer-sized colloidal silica solution of 0-31 wt% and NaOH of 0-2 kmol/m(3) in a flat-stirred vessel for various sizes and speeds of 25 degrees C and 101.3 N/m(2) to obtain the volumetric liquid-side mass transfer coefficient (k(L)a(L)) of CO(2). The film theory accompanied by chemical reaction between CO, and NaOH was used to estimate the theoretical value of absorption rate of CO,. The empirical correlation formula containing the relationship between k(L)a(L) and rheological property of the aqueous colloidal silica solution was presented. The value of RA in the aqueous colloidal silica solution was decreased by the reduction of k(L)a(L) due to elasticity of the solution.

• 出版日期2010-9