Absorption of carbon dioxide into aqueous blends of 2-amino-2-methyl-1-propanol and diethanolamine

Abstract

This work presents an experimental and theoretical investigation of CO 2 absorption into aqueous blends of 2-amino-2-methyl-1-propanol (AMP) and diethanolamine (DEA). The CO 2 absorption into the amine blends is described by a combined mass transfer–reaction kinetics–equilibrium model, developed according to Higbie's penetration theory. The model predictions have been found to be in good agreement with the experimental rates of absorption of CO 2 into (AMP+DEA+H 2O). The good agreement between the model predicted rates and enhancement factors and the experimental results indicate that the combined mass transfer–reaction kinetics–equilibrium model with the appropriate use of model parameters can effectively represent CO 2 mass transfer for the aqueous amine blends AMP/DEA.