Experimental determination of carbon dioxide solubility data in aqueous alkanolamine solutions

A computer-operated static apparatus for the experimental measurement of gas solubility data by the synthetic method was recently installed. It was used for the determination of carbon dioxide solubility data in aqueous N-methyldiethanolamine (MDEA), diethanolamine (DEA) solutions and aqueous solution of a mixture of MDEA/DEA. For all the systems, temperatures between 298 and 348 K and pressures up to ca. 4.5 MPa were investigated. For one aqueous MDEA solution at 313 K, two other experimental static set-ups were applied to check the reliability of the measured data. The first one, which is manually operated, also uses the synthetic method, while in the second apparatus, the phases were analyzed by gas chromatography. Consistency of the obtained data with literature has been analyzed.