Correlation of CO2 solubility in N-methyldiethanolamine+piperazine aqueous solutions using extended Debye–Hückel model

Liquid heat capacity of the solvent system (piperazine+2-amino-2-methyl-l-propanol+water)

“…In the case of (PZ + AMP + H 2 O), physical property information available in the literature includes only solubility [33], kinetics [1,3,16,34], and mass transfer coefficients for CO 2 absorption [16] and none for heat capacity. It is, therefore, the objective of this work to report heat capacity results for different concentrations of the system (PZ + AMP + H 2 O) that have been carefully measured using our differential scanning calorimetry (DSC) over the temperature range 303.2 K to 353.2 K. A Redlich-Kister-type equation has been used to model the excess molar heat capacity through which molar heat capacity can be predicted.…”

Review and selection criteria of classical thermodynamic models for acid gas absorption in aqueous alkanolamines

“…-The results were satisfactory, but deviations were common, as discussed above. Vahidi et al 2009 CO 2 PZ, MDEA -New interaction parameters were found for the said mixed solvent system. -The results were satisfactory, but deviations were common, as discussed above.…”

Nonelectrolyte NRTL-NRF model to study thermodynamics of strong and weak electrolyte solutions

“…Modeling of acid gases solubility in aqueous alkanolamines solutions is important from both theoretical and industrial view points. Presently, studying the thermodynamics of such systems is accomplished by using two types of models: an activity coefficient equation [21][22][23][24][25][26] or an electrolyte equation of state [27][28][29]. In this work, the N-NRTL-NRF activity coefficient model is applied through the chemical reactions in liquid phase v i as following:…”