High-pressure absorption study of CO 2 in aqueous N -methyldiethanolamine (MDEA) and MDEA-piperazine (PZ)-1-butyl-3-methylimidazolium trifluoromethanesulfonate [bmim][OTf] hybrid solvents

Khan, Saleem Nawaz; Hailegiorgis, Sintayehu Mekuria; Man, Zakaria; Garg, Sahil; Shariff, Azmi Mohd; Farrukh, Sarah; Ayoub, Muhammad; Ghaedi, Hosein

doi:10.1016/j.molliq.2017.11.145

Cited by 39 publications

(12 citation statements)

References 55 publications

(60 reference statements)

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“…Li et al [53] proposed a reaction mechanism between EDA and CO 2 , wherein the amino groups (-NH 2 ) react with CO 2 under the sufficient CO 2 conditions. Furthermore, it seems that this minimal amount of CO 2 (~10 mmol) was independent of the amine concentration, and could correspond to the "lean amine acid gas loading" in a typical sweetening process using alkanolamines as chemical solvents [32]. Momeni and Riahi [54] established that amines' chemical structure and nature are the most important parameters for CO 2 absorption purposes.…”

Section: Co 2 Capture Using Eda: Reaction Exothermicity Effectsmentioning

confidence: 96%

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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: Co 2 Capture Using Eda: Reaction Exothermicity Effectsmentioning

confidence: 96%

“…According to the damping-film theory [31,32], the relationship between partial pressure of the gas and time can be described for the isothermal absorption of gas, as follows:…”

Section: Introductionmentioning

confidence: 99%

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

et al. 2021

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“…Details of this apparatus have been explained elsewhere. [49][50][51][52] A set of equations (Eqs. (S1)-(S7)) was used to calculate the CO2 solubility, 49,50,53,54 as presented in the Supplementary Material.…”

Section: Co2 Solubility Measurementmentioning

confidence: 99%

High CO2 absorption in new amine based-transition-temperature mixtures (deep eutectic analogues) and reporting thermal stability, viscosity and surface tension: Response surface methodology (RSM)

Ghaedi

Zhao

Clough

et al. 2020

Journal of Molecular Liquids

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To study CO2 capture potential, n-methyl diethanolamine (MDEA) was used to prepare three types of transition-temperature mixtures (TTMs) by mixing methyltriphenylphosphonium bromide (MTPPB) as a hydrogen bond acceptor (HBA) and MDEA as a hydrogen bond donor (HBD) in molar ratios of 1:7, 1:10 and 1:16 HBA to HBD. Fourier transform infrared spectroscopy (FT-IR) results showed that TTMs have almost similar spectra to their HBD (MDEA) with different levels of transmittance and exhibit similar behavior. From the experimental results, it was found that the thermal stability, viscosity and surface tension of TTMs decreased as the concentration of MDEA in the mixture increased. According to response surface methodology (RSM) models and analysis of variance (ANOVA), temperature and molar ratio had a great effect on the viscosity and surface tension of TTMs. The final part of this research was the measurement of CO2 solubility in TTMs at 303.15 K at pressure up to 1.35 MPa. It was found that CO2 solubility in TTMs was enhanced as the MDEA quantity increased in the mixture up to 1:10 mole ratio. However, by increasing MDEA concentration to 16:1 mole ratio, there was a decreasing trend in the CO2 solubility data. Also, all TTMs, particularly TTM containing 10:1 mole MDEA (MTPPB-MDEA 1:10) exhibited an equilibrium loading capacity approaching 1 mole CO2 per mole solvent at high pressure, revealing

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“…Zakuciová et al (2015) investigated CCS technologies in pre-combustion, post-combustion and oxy-combustion applications, concluding that freshwater eutrophication is the main CA environmental issue due to amine toxicity. Kahn et al (2017) studied hybrid solvents for CO 2 stripping at high pressure which could reduce compression costs in geological storage applications. Mazzetti et al (2014) analyzed the economics of treating North Sea NG with CA-MEA, concluding that, under the Norwegian CO 2 taxes, the technology is adequate for EOR.…”

Section: Recent Focusmentioning

confidence: 99%

Advances in Carbon Management Technologies

Sikdar¹,

Princiotta

2020

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High-pressure absorption study of CO 2 in aqueous N -methyldiethanolamine (MDEA) and MDEA-piperazine (PZ)-1-butyl-3-methylimidazolium trifluoromethanesulfonate [bmim][OTf] hybrid solvents

Cited by 39 publications

References 55 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

High CO2 absorption in new amine based-transition-temperature mixtures (deep eutectic analogues) and reporting thermal stability, viscosity and surface tension: Response surface methodology (RSM)

Advances in Carbon Management Technologies

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