Prediction of VLE for aqueous blended amines using VLE models of single amines

Hwang, Sung June; Kim, Huiyong; Lee, Kwang Soon

doi:10.1016/j.ijggc.2016.03.011

Cited by 16 publications

(8 citation statements)

References 61 publications

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“…Five different types of single amines including Hwang et al 76 K-E models VLE model matches the K-E models.…”

Section: Polyaminesmentioning

confidence: 90%

“…Pashaei et al 75 justified with the penetration models for the mass transfer flux that the absorption efficiency increased with increasing stirring speed. After investigating five different types of single amines including PZ with K-E modelling, Hwang et al 76 concluded that the VLEs of the single amines fit well to K-E model. Zhang et al 68 applied Gaussian software to develop a computational modeling in which the effect of varying chain length on the stability of mono-carbamate was simulated.…”

Section: Polyamine Solventsmentioning

confidence: 99%

“…Pashaei et al 76 justified with the penetration models for the mass transfer flux that the absorption efficiency increased with increasing stirring speed. After investigating five different types of single amines including PZ with K-E modeling, Hwang et al 77 C NMR (1) Performed qualitative, quantitative analysis and ions peak.…”

Section: = −mentioning

confidence: 99%

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NMR Techniques and Prediction Models for the Analysis of Species Formed in CO₂ Capture Processes with Amine-Based Sorbents: A Critical Review

Barzagli

et al. 2020

ACS Sustainable Chem. Eng.

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“…Five different types of single amines including Hwang et al 76 K-E models VLE model matches the K-E models.…”

Section: Polyaminesmentioning

confidence: 90%

Section: Polyamine Solventsmentioning

confidence: 99%

See 1 more Smart Citation

NMR Techniques and Prediction Models for the Analysis of Species Formed in CO₂ Capture Processes with Amine-Based Sorbents: A Critical Review

Barzagli

et al. 2020

ACS Sustainable Chem. Eng.

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“…The Kent-Eisenberg model is based on the assumption that activity coefficients and fugacity coefficients corresponding to all the species are assumed to be unity. 30,31 Hence the equilibrium constant related to all the intermediate reactions are expressed in terms of concentration of ionic species only. While equilibrium constant relates to the chemical reaction equilibrium, Henry's law constant relates to the physical equilibria.…”

Section: Modified Ke Modelmentioning

confidence: 99%

Analysis of equilibrium CO ₂ solubility in aqueous APDA and its potential blends with AMP / MDEA for postcombustion CO ₂ capture

2020

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The utility of polyamine-based solvent-activators for the possible application in postcombustion CO 2 capture technology has drawn considerable attention recently owing to its higher loading capacity as well as superior kinetics. The current work involves a comprehensive experimental cum theoretical investigation on the equilibrium solubility of CO 2 pertaining to aqueous N-(3-aminopropyl)-1,3-propanediamine and its blends with Nmethyldiethanolamine and 2-amino-2-methyl-1-propanol. The analysis was conducted within the operating temperature and CO 2 partial pressure range of 303.2-323.2 K and 2-200 kPa, respectively. Two different mathematical models based on nonrigorous approaches such as equilibrium based modified Kent-Eisenberg (KE) model and a multilayer feedforward neural network model have been developed to correlate the CO 2 solubility data over a wide range of experimental conditions. Both the model predictions are wellvalidated with the experimental results. The reaction scheme as well as the prevalence of important reaction products was further confirmed with qualitative 13 C NMR as well as ATR-FTIR analysis. Apart from these some of the important thermally induced transport properties viz, density, viscosity, and surface tension of the aqueous single and blended systems were measured and correlated with various consistent empirical models such as Redlich-Kister and Grunberg-Nissan model while surface tension data are modeled using temperature-based multiple linear regression technique.

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“…This model assumes that the activity coefficients of all species in the liquid phase are unity, and that the vapor phase follows the ideal gas equation of state. Hwang et al 22 described the details of the K-E model for various aqueous alkanolamines and showed that the K-E model can predict the CO 2 solubility of various single alkanolamines and their blends quite satisfactorily despite its simplicity.…”

Section: Thermodynamic Modelmentioning

confidence: 99%

Solubility of Carbon Dioxide in Aqueous Solutions of Three Secondary Amines: 2-(Butylamino)ethanol, 2-(Isopropylamino)ethanol, and 2-(Ethylamino)ethanol Secondary Alkanolamine Solutions

Hwang

Kim

et al. 2017

J. Chem. Eng. Data

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Secondary amines have been proposed as potential solvents for CO2 capture. In this study, the CO2 solubility of three secondary alkanolamine aqueous solutions, 2-(butylamino)ethanol (BAE), 2-(isopropylamino)ethanol (IPAE), and 2-(ethylamino)ethanol (EAE), were measured with a pressure range of 0.02 to 395 kPa at 40, 80, and 120 °C. A static method based on an equilibrium cell unit was used for measurements in high CO2 equilibrium partial pressure regions at over 1 kPa, while the flow method based on a modified gas sparging reactor unit proposed by Kim et al.(2017) was employed for measurements in low pressure regions under 1 kPa. Two amine concentrations, 15 and 30 wt %, were considered for each amine, and their CO2 solubility was represented by the Kent-Eisenberg model. The cyclic CO2 absorption capacity and heat of the reaction for the three secondary alkanolamines were compared with those of monoethanolamine (MEA).

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Prediction of VLE for aqueous blended amines using VLE models of single amines

Cited by 16 publications

References 61 publications

NMR Techniques and Prediction Models for the Analysis of Species Formed in CO₂ Capture Processes with Amine-Based Sorbents: A Critical Review

NMR Techniques and Prediction Models for the Analysis of Species Formed in CO₂ Capture Processes with Amine-Based Sorbents: A Critical Review

Analysis of equilibrium CO ₂ solubility in aqueous APDA and its potential blends with AMP / MDEA for postcombustion CO ₂ capture

Solubility of Carbon Dioxide in Aqueous Solutions of Three Secondary Amines: 2-(Butylamino)ethanol, 2-(Isopropylamino)ethanol, and 2-(Ethylamino)ethanol Secondary Alkanolamine Solutions

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Prediction of VLE for aqueous blended amines using VLE models of single amines

Cited by 16 publications

References 61 publications

NMR Techniques and Prediction Models for the Analysis of Species Formed in CO2 Capture Processes with Amine-Based Sorbents: A Critical Review

NMR Techniques and Prediction Models for the Analysis of Species Formed in CO2 Capture Processes with Amine-Based Sorbents: A Critical Review

Analysis of equilibrium CO 2 solubility in aqueous APDA and its potential blends with AMP / MDEA for postcombustion CO 2 capture

Solubility of Carbon Dioxide in Aqueous Solutions of Three Secondary Amines: 2-(Butylamino)ethanol, 2-(Isopropylamino)ethanol, and 2-(Ethylamino)ethanol Secondary Alkanolamine Solutions

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Product

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NMR Techniques and Prediction Models for the Analysis of Species Formed in CO₂ Capture Processes with Amine-Based Sorbents: A Critical Review

NMR Techniques and Prediction Models for the Analysis of Species Formed in CO₂ Capture Processes with Amine-Based Sorbents: A Critical Review

Analysis of equilibrium CO ₂ solubility in aqueous APDA and its potential blends with AMP / MDEA for postcombustion CO ₂ capture