Removal process of CO2 using MDEA aqueous solutions in a bubble column reactor

Present work analyses the behaviour and mass transfer of N-methyldiethanolamine (MDEA) in the removal process of carbon dioxide using a bubble column reactor (BCR) as gas–liquid contactor. The use of this type of equipment requires the interfacial area determination for the following mass transfer coefficient calculation based on absorption kinetics. In this work, a photographic method based on the bubble diameter determination, has been employed. The effect of contactor, operation conditions, liquid-phase nature and chemical reaction upon the mass transfer coefficient and interfacial areas have been analysed.