Abstract
In this study, the variations of physicochemical properties like density and viscosity in CO2 loaded aqueous monoethanol amine were studied in a laboratory rig. Liquid samples were collected from the top and the bottom of the absorber column and temperature and liquid flow rate were recorded for further analysis. CO2 concentration in the solution was determined by using a precipitation and titration method. Density and viscosity were measured from the collected samples under the recorded column temperatures. The measured physicochemical properties were compared with correlations given by Weiland and Hartono. The study showed that both correlations could predict density and viscosity with acceptable deviations. Further, these correlations can be used in equipment design and process simulations. pH of the liquid was also measured to relate it with the CO2 concentration in the top and bottom of the absorber column. The variation of the measured pH is a possible measure of the variations of CO2 concentration.
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