CO2 diluted with N2 was absorbed by aqueous DEA solutions in a high shear jet absorber consisting of a high pressure stainless steel vessel with a pressure nozzle at the top. The results show that equilibrium conditions can be rapidly reached under high shear conditions. CO2 removal expressed by moles of CO2 absorbed per mole of DEA increased with gas flow rate and decreased with liquid flow rate. The overall mass transfer capacity coefficient Kg a was found to increase with gas flow rate and solution concentration. Kg a went through a maximum with solution flow rate. Increasing the CO2 partial pressure was found to decrease Kg a.