Effect of number of amine groups in aqueous polyamine solution on carbon dioxide (CO 2 ) capture activities

Muchan, Pailin; Narku-Tetteh, Jessica; Saiwan, Chintana; Idem, Raphael; Supap, Teeradet

doi:10.1016/j.seppur.2017.04.031

Cited by 81 publications

(35 citation statements)

References 33 publications

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“…CO2 capture using EDA: kinetic model parameters for Equation (7). EDA -This work EDA -data from [58] EDA -data from [59] MEA -data from [46] DEA -data from [46] Series5 Moreover, Figure 6a shows the data on CO 2 loading for other amines (MEA, DEA) taken from [46]. Similarly, there was a linear relationship between the CO 2 loading and the amine concentration, as obtained for EDA in this work.…”

Section: Co2 Capture Using Eda: Kinetic and Thermodynamic Analysissupporting

confidence: 72%

“…Increases in the EDA concentration produced an increased CO 2 loading. Muchan et al [58] worked at atmospheric pressure with 15 KPa CO 2 (in nitrogen balance) using an aqueous EDA solution, while Singh [59] performed the evaluation of different amines for CO 2 capture using high-pressure systems. In both cases-at atmospheric pressure and at high pressure-the results were consistent with the linear tendency obtained in this work.…”

Section: Co2 Capture Using Eda: Kinetic and Thermodynamic Analysismentioning

confidence: 99%

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Kinetic and Thermodynamic Analysis of High-Pressure CO2 Capture Using Ethylenediamine: Experimental Study and Modeling

et al. 2021

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One of the alternatives to reduce CO2 emissions from industrial sources (mainly the oil and gas industry) is CO2 capture. Absorption with chemical solvents (alkanolamines in aqueous solutions) is the most widely used conventional technology for CO2 capture. Despite the competitive advantages of chemical solvents, the technological challenge in improving the absorption process is to apply alternative solvents, reducing energy demand and increasing the CO2 captured per unit of solvent mass. This work presents an experimental study related to the kinetic and thermodynamic analysis of high-pressure CO2 capture using ethylenediamine (EDA) as a chemical solvent. EDA has two amine groups that can increase the CO2 capture capacity per unit of solvent. A non-stirred experimental setup was installed and commissioned for CO2 capture testing. Tests of the solubility of CO2 in water were carried out to validate the experimental setup. CO2 capture testing was accomplished using EDA in aqueous solutions (0, 5, 10, and 20 wt.% in amine). Finally, a kinetic model involving two steps was proposed, including a rapid absorption step and a slow diffusion step. EDA accelerated the CO2 capture performance. Sudden temperature increases were observed during the initial minutes. The CO2 capture was triggered after the absorption of a minimal amount of CO2 (~10 mmol) into the liquid solutions, and could correspond to the “lean amine acid gas loading” in a typical sweetening process using alkanolamines. At equilibrium, there was a linear relationship between the CO2 loading and the EDA concentration. The CO2 capture behavior obtained adapts accurately (AAD < 1%) to the kinetic mechanism.

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Section: Co2 Capture Using Eda: Kinetic and Thermodynamic Analysissupporting

confidence: 72%

Section: Co2 Capture Using Eda: Kinetic and Thermodynamic Analysismentioning

confidence: 99%

Kinetic and Thermodynamic Analysis of High-Pressure CO2 Capture Using Ethylenediamine: Experimental Study and Modeling

et al. 2021

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“…Since the PG contain amino groups similar to traditional amines, the reaction between CO 2 and PG can be described by the zwitterion mechanism [21,37].…”

Section: Hollow Fiber Lumenmentioning

confidence: 99%

Modeling and Simulation of the Simultaneous Absorption/Stripping of CO2 with Potassium Glycinate Solution in Membrane Contactor

Ghasem

2020

Membranes

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Global warming is an environmental problem caused mainly by one of the most serious greenhouse gas, CO2 emissions. Subsequently, the capture of CO2 from flue gas and natural gas is essential. Aqueous potassium glycinate (PG) is a promising novelty solvent used in the CO2 capture compared to traditional solvents; simultaneous solvent regeneration is associated with the absorption step. In present work, a 2D mathematical model where radial and axial diffusion are considered is developed for the simultaneous absorption/stripping process. The model describes the CO2/PG absorption/stripping process in a solvent–gas membrane absorption process. Regeneration data of rich potassium glycinate solvent using a varied range of acid gas loading (mol CO2 per mol PG) were used to predict the reversible reaction rate constant. A comparison of simulation results and experimental data validated the accuracy of the model predictions. The stripping reaction rate constant of rich potassium glycinate was determined experimentally and found to be a function of temperature and PG concentration. Model predictions were in good agreement with the experimental data. The results reveal that the percent removal of CO2 is directly proportional to CO2 loading and solvent stripping temperature.

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“…Nevertheless, its lower rate of reaction with CO 2 , compared to those of DEA and MEA, restricts its application . Therefore, many studies have been conducted to replace conventional amines with very beneficial ones, including polyamines, that structurally comprise multiple amino groups. − SHAs have characteristics of low heat of reaction and large CO 2 absorption capacity (1 mol CO 2 /mol AMP). However, the low CO 2 absorption rate as a deficiency in SHAs has been promoted by the addition of amines with higher absorption rates …”

Section: Introductionmentioning

confidence: 99%

Densities and Viscosities of Binary and Ternary Solutions of Triethylenetetramine, 2-Amino-2-methyl-1-propanol, and Water for Carbon Dioxide Capture

et al. 2021

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The densities and viscosities of three solutions, namely, two binary solutions [triethylenetetramine (TETA) + H2O and TETA + 2-amino-2-methyl-1-propanol (AMP)] and one ternary solution (TETA + AMP + H2O) were measured at atmospheric pressure and in the temperature range of 303.15 to 343.15 K. Their viscometric and volumetric characteristics, such as the excess molar volume (V E), partial molar volume (V̅ i ), excess partial molar volume (V̅ i E), partial molar volume at infinite dilution (V̅ i ∞), excess partial molar volume at infinite dilution (V̅ i E,∞), apparent molar volume (V φ.i ), viscosity deviation (Δη), molar Gibbs free energy (ΔG), molar entropy (ΔS), and molar enthalpy (ΔH), were calculated to determine the viscous flows of the solutions, and they could also explain the empirical results theoretically. The degrees of the decrease in viscosities and densities of the solutions were different. The variations in the properties were also analyzed through their intermolecular interactions and molecular structures. Additionally, Δη and V E were obtained by the Redlich–Kister model, for the binary solutions, and the Cibulka model, for the ternary solution. With the given standard deviations, σ ≤ 3.55, for the binary solutions, and σ = 3.98, for the ternary solution, the viscosity data were parameterized by the Eyring–non-random two-liquid model. The obtained thermodynamic properties were reliable and could be employed in the design and optimization of a CO2-capture process, utilizing the studied solutions.

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Effect of number of amine groups in aqueous polyamine solution on carbon dioxide (CO 2 ) capture activities

Cited by 81 publications

References 33 publications

Kinetic and Thermodynamic Analysis of High-Pressure CO2 Capture Using Ethylenediamine: Experimental Study and Modeling

Kinetic and Thermodynamic Analysis of High-Pressure CO2 Capture Using Ethylenediamine: Experimental Study and Modeling

Modeling and Simulation of the Simultaneous Absorption/Stripping of CO2 with Potassium Glycinate Solution in Membrane Contactor

Densities and Viscosities of Binary and Ternary Solutions of Triethylenetetramine, 2-Amino-2-methyl-1-propanol, and Water for Carbon Dioxide Capture

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