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Influence of polyethylene oxide on absorption of carbon dioxide into aqueous N-methyldiethanolamine solution

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Abstract

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.

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Authors and Affiliations

  1. Division of Chemical Engineering, Pusan National University, Busan, 609-735, Korea

    Sang-Wook Park & Byoung-Sik Choi

  2. Department of Chemical Engineering, Sogang University, Seoul, 121-742, Korea

    Jae-Wook Lee

Authors
  1. Sang-Wook Park
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  2. Byoung-Sik Choi
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  3. Jae-Wook Lee
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Correspondence to Sang-Wook Park.

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Park, SW., Choi, BS. & Lee, JW. Influence of polyethylene oxide on absorption of carbon dioxide into aqueous N-methyldiethanolamine solution. Korean J. Chem. Eng. 24, 431–435 (2007). https://doi.org/10.1007/s11814-007-0074-y

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  • DOI: https://doi.org/10.1007/s11814-007-0074-y

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