removal of carbon dioxide by absorption in mixed amines: modelling of absorption in aqueous amp/dea solutions

this work presents an investigation of co₂ absorption into aqueous blends of amp + dea. we used the deshmukh mather thermodynamic models to predict the absorption of co₂ into aqueous blended amine. the experimental results show that the solubility of co₂ increase with partial pressure and decreases with temperature. the retrieved data from the literature of co₂ loading in aqueous solutions of amp + dea at various temperature (303-323k) and co₂ partial pressure (1–100kpa) were fitted simultaneously. we generated the different interaction parameters required to calculate the activity coefficients in the model. by using the generated interaction parameters, the model was applied to correlate the co₂ loading in solutions of this mixture as well as data reported in the literature. moreover was found that it can be able to give a good estimation of co₂ loading over a wide range of operating conditions.