Korean Journal of Chemical Engineering, Vol.24, No.3, 431-435, May, 2007
Influence of polyethylene oxide on absorption of carbon dioxide into aqueous N-methyldiethanolamine solution
E-mail:
Carbon dioxide was absorbed into aqueous polyethylene oxide (PEO) solution containing N-methyldiethanolamine (MDEA) in a flat-stirred vessel to investigate the effect of non-Newtonian rheological behavior of PEO on the chemical absorption rate of CO2, where the reaction between CO2 and MDEA was assumed to be a first-order reaction with respect to the concentration of CO2 and MDEA, respectively. A unified correlation equation containing the Deborah number, which reflects the viscoelastic properties of a non-Newtonian liquid, was used to obtain the volumetric liquid-side mass transfer coefficient of carbon dioxide in aqueous PEO solution. The elastic properties of PEO accelerated the absorption rate of CO2 compared with that of a Newtonian liquid based on the same values of viscosity.
- Yagi H, Yoshida F, Ind. Eng. Chem. Process Des. Dev., 14, 488 (1975)
- Ranade VR, Ulbrecht JJ, AIChE J., 24, 796 (1978)
- Nakanoh M, Yoshida F, Ind. Eng. Chem. Process Des. Dev., 19, 190 (1980)
- Park SW, Sohn IJ, Park DW, Oh KJ, Sep. Sci. Technol., 38(6), 1361 (2003)
- Park SW, Sohn IJ, Sohn SG, Kumazawa H, Sep. Sci. Technol., 38(16), 3983 (2003)
- Park SW, Choi BS, Lee BD, Lee JW, Sep. Sci. Technol., 40(4), 911 (2005)
- Park SW, Choi BS, Lee JW, Sep. Sci. Technol., 40(16), 3261 (2005)
- Ko JJ, Li MH, Chem. Sci. Eng., 55, 4139 (2000)
- Kennard ML, Meisen A, J. Chem. Eng. Data, 29, 309 (1984)
- Nijing RATO, Hendriksz RH, Kramers H, Chem. Eng. Sci., 10, 88 (1959)
- Danckwerts PV, Sharma MM, Chem. Eng., 44, 244 (1966)
- Cussler EL, Diffusion, Cambridge University Press, New York, 118 (1984)
- Metzner AB, Otter RE, AIChE J., 3, 3 (1957)