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Densities and dynamic viscosities in liquid solutions of monoethanolamine (MEA), water, and carbon dioxide (CO 2 ) have been measured. The mass fraction of MEA in water was (20, 30, and 40) %, and CO 2 loading was between (0 and 0.5) mol CO 2 per mole MEA; the temperature was varied between (25 and 80) °C. These measurements were compared with literature data of solutions without CO 2 and with data for CO 2 loaded solutions primarily at 25 °C. The results show that the densities and viscosities increase significantly with increasing CO 2 loading at all temperatures. The measured data for the ternary system were compared with available density and viscosity correlations from Weiland et al. J. Chem. Eng. Data 1998, 43, 378−382. Agreement between the measurements and the Weiland correlations was satisfactory. The deviation increases with increased MEA concentration, CO 2 loading, and temperature.
Amundsen et al. (Thu,) studied this question.