Equilibrium solubility of carbon dioxide in aqueous blend of monoethanolamine (MEA) and 2-1-piperazinyl-ethylamine (PZEA) solutions: Experimental and optimization study

Vapour-liquid equilibrium study of tertiary amines, single and in blend with 3-(methylamino)propylamine, for post-combustion CO2 capture

“…1 also reflects that few VLE studies have been conducted at temperatures realistic for the desorption process (T = 393 K). Commonly, VLE studies for blended amines are available in the temperature range of 313 K to 353 K [14][15][16][17][18]. VLE data over a wide range of temperatures, pressures and concentrations are essential for the process design, optimisation and simulation of the CO2 capture plant, and to make a proper choice of absorbent.…”

Enrichment in CO2 Absorption by 2-Methyl Piperazine-Activated Tertiary Amines, Physical Solvents, and Ionic Liquid Systems

“…CO 2 solubility in the blend of aq (3.017 m MDEA + 1.008 m 2-MPZ) solution is quite competitive to literature available data (Figure ). ,, In addition, a comparison of aq (3.501 m TMSO 2 + 0.509 m 2-MPZ) with a near-aqueous composition of 0.0999 mol fractions of TMSO 2 indicates that the former provides a maximum CO 2 solubility of 0.0191 mol fraction at 317.57 kPa. On the other hand, aq TMSO 2 provides a CO 2 solubility of 0.0106 mol fraction at 1.108 MPa and at 303.2 K. Hence, it can be concluded that with the addition of 0.509 m 2-MPZ to nearly the same composition of TMSO 2 , the newly developed blend outperforms the aqueous blend of TMSO 2 .…”

“…Nevertheless, due to either low-equilibrium CO 2 solubility or low reaction rates of these amines, addition of activators is recommended by many researchers. 10 , 11 Various activators such as piperazine and its derivatives blended with AMP, 11 MDEA, 12 MEA, 13 and potassium carbonate (K 2 CO 3 ) 14 have been widely considered in the literature. Other amine activators which have been studied and proposed for the said purpose are bis (3-aminopropyl) amine (APA), hexamethylenediamine, and triethylenetetramine.…”

“…The CO 2 solubility in several aqueous amines such as monoethanolamine (MEA), N -methyldiethanolamine (MDEA), diethanolamine (DEA), and 2-amino-2-methyl-1-propanol (AMP) has been studied in the literature over an extensive range of temperatures, pressures, and concentrations. Nevertheless, due to either low-equilibrium CO 2 solubility or low reaction rates of these amines, addition of activators is recommended by many researchers. , Various activators such as piperazine and its derivatives blended with AMP, MDEA, MEA, and potassium carbonate (K 2 CO 3 ) have been widely considered in the literature. Other amine activators which have been studied and proposed for the said purpose are bis (3-aminopropyl) amine (APA), hexamethylenediamine, and triethylenetetramine. − One of the PZ derivatives, viz., 2-methyl piperazine (2-MPZ), is explored in the present study for CO 2 absorption.…”

Experimental Study of CO2 Absorption in Potassium Carbonate Solution Promoted by Triethylenetetramine

“…Response surface methodology (RSM) is an efficient method to obtain the sensitivity analysis of a process and optimum condition of a multivariable system [47]. In addition, RSM can be applied for investigation of effect of factors on response, and the relationship between response variables [48]. In this work, the response surface methodology was used to correlate the CO 2 solubility experimental data (α) as a function of temperature (T), pressure (P CO2 ) and TETA mole fraction (R) in the solution of potassium carbonate promoted by TETA.…”