Abstract
In this work, CO 2 solubility was investigated in a blended aqueous solution of 2-amino-2-hydroxymethyl-1,3-propanediol (AHPD) and piperazine (PZ). Concentration of AHPD was varied from ( w = 0.13, 0.19, and 0.25), while concentration of PZ was varied from ( w = 0, 0.0174, 0.0688, and 0.1035). All experiments were performed at temperatures of 303.15, 313.15, and 333.15 K and over a CO 2 pressure range of (5–60) bar. CO 2 solubility was calculated in terms of CO 2 loading (mole of CO 2 /mole of amine absorbed). Effect of temperature, equilibrium CO 2 pressure, and PZ concentration on CO 2 loading was examined. Artificial neural network (ANN) model was developed to correlate CO 2 solubility data. It was found that correlated CO 2 solubility data from ANN model were in good agreement with experimental CO 2 solubility data. • Solubility of CO 2 in PZ Activated aqueous solution of AHPD was measured. • Effect of Temperature, Pressure and Concentration on CO 2 solubility was studied. • Solubility was measured up to the pressure of 60 bar. • ANN model was developed to correlate the measured data.
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