Equilibrium solubility of carbon dioxide in (2-amino-2-methyl-1-propanol+piperazine+water)

Solubility of carbon dioxide in aqueous solution of 2-amino-2-methyl-1-propanol and piperazine

“…Yang et al [12] observed that the plots representing the solubility at constant temperature and at different AMP/PZ mole ratio intersect at a common point known as crossover point [5]. We also observed that at higher loading (about 0.75, Fig.…”

“…In Fig. 2, model predicted results are compared with the reported data of Yang et al [12]. Observation from Fig.…”

“…Keeping all other parameters to their default values [23,24], a few molecule-ion pair parameters have been chosen for regression considering the equilibrium composition in liquid the phase. Experimental data of this work and data from Yang et al [12] have been entered in the data regression system (DRS ® ) following the procedure described by Hilliard [31]. The objective function, F, for optimization is based on maximum likelihood principle [27] and is expressed as:…”

“…vator, such as piperazine (PZ) to aqueous alkanolamines, e.g., MEA, MDEA or AMP has been suggested for more efficient removal of CO 2 from industrial and from flue gas streams of coal fired power plants [3][4][5][6][7][8][9][10][11][12][13]. Piperazine is used as an activator in BASF activated MDEA technology [14].…”

“…Yang et al [12] presented solubility of CO 2 in (2 and 3 kmol m 3 AMP + 0.5, 1.0 and 1.5 kmol m 3 PZ) in the temperature range of 313-353 K and CO 2 partial pressure up to 152 kPa. They used Kent-Eisenberg model to correlate their data [21].…”