Experimental Measurement and Thermodynamic Modeling of the Solubility of Carbon Dioxide in Aqueous Alkanolamine Solutions in the High Gas Loading Region

VLE of Carbon Dioxide-Loaded Aqueous Potassium Salt of L-Histidine Solutions as a Green Solvent for Carbon Dioxide Capture: Experimental Data and Modelling

“…However, the individual values of gas loading are reduced with increase in solvent concentration, since the HisK concentration appears in the denominator of loading equation as defined in equation (4). Moreover, the trend of the carbon dioxide loadings with respect to pressure, temperature, and concentration was congruent with the common understanding [7,10,29,34,42,43]. Additionally, the exothermic reaction of CO 2 with HisK creates a further increase in temperature, leading to a lower loading of CO 2 [44].…”

“…Each vessel is jacketed with electrically operated heaters. e apparatus has been used previously at various instances to reaffirm the carbon dioxide solubility in various alkanolamines with good reliability [7,34,35]. e feed vessel and reactor cell are equipped with a temperature (type: Autonics TK-4S) and pressure (type: Keyence GP-100M) gauge each.…”

Reactive kinetics of carbon dioxide loaded aqueous blend of 2‐amino‐2‐ethyl‐1,3‐propanediol and piperazine using a pressure drop method

“…The high‐pressure apparatus, shown in Figure , was used for this purpose. All parts of the equipment were thermostatted and the temperature was controlled within ±0.1 K. Detailed information about the equipment is available in other publications …”

A review of semi-empirical equilibrium models for CO2-alkanolamine-H2O solutions and their mixtures at high pressure

“…This factually reduces the piperazine to other carbamate forming alkanolamines like MEA and DEA in this study. Previously, modelling of carbon dioxide solubility in aqueous piperazine has been reported as a carbamate forming alkanolamine [73] and non-carbamate alkanolamine, both as a single solvent and in mixtures [57,64]…”

“…However, when a correction factor is used (as in Figure 4d), the overall results are similar. A few researchers have effectively used the values of published equilibrium constants beyond the range of their temperature validity with satisfactory results [57,72]. S3 of the supplementary information.…”