The absorption and desorption of carbon dioxide in aqueous monoethanolamine (MEA) was measured in a rotating packed bed of size 398 mm outside diameter, 156 mm inside diameter, and axial depth 25 mm. The effect of lean amine temperature (20 and 40°C), peripheral rotor gravity (31 and 87 g), and various MEA concentrations were investigated. Using MEA concentrations above 30 wt % achieved lower CO 2 penetration levels. This is particularly pronounced for the 100% MEA solution. Comparison with conventional columns showed the advantages of using rotating packed beds in terms of saving size and space and efficient operation.

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.