CO2 capture with the help of Phosphonium-based deep eutectic solvents

Ghaedi, Hosein; Ayoub, Muhammad; Sufian, Suriati; Shariff, Azmi Mohd; Hailegiorgis, Sintayehu Mekuria; Khan, Saleem Nawaz

doi:10.1016/j.molliq.2017.08.046

Cited by 92 publications

(40 citation statements)

References 56 publications

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“…As shown in Figure 6, the absolute excess enthalpy of TBACl-LA 1:2+CO 2 is higher than that for TMACl-LA 1:2+CO 2 , indicating that TBACl-LA 1:2 has a higher capacity for CO 2 capture. The comparison of ChCl-DEG 1:3+CO 2 and ChCl-TEG 1:3+CO 2 shows that ChCl-TEG 1:3+CO 2 has a high absolute excess enthalpy compared to ChCl-DEG 1:3+CO 2 system, being in agreement with the experimental results obtained by Sarmad et al (2017b) and Ghaedi et al (2017), i.e., increasing the alkyl chain length in HBA and HBD results in an increased CO 2 solubility. Moreover, by increasing the molar ratio of HBD in DES, the absolute excess enthalpy of ChCl-FA 1:5+CO 2 is increased compared to ChCl-FA 1:3+CO 2 system, which agrees with the experimental results (Lu et al, 2015).…”

Section: Excess Enthalpy Predictionsupporting

confidence: 88%

Screening Deep Eutectic Solvents for CO2 Capture With COSMO-RS

Liu

Sun

et al. 2020

Front. Chem.

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In this work, 502 experimental data for CO 2 solubilities and 132 for Henry's constants of CO 2 in DESs were comprehensively summarized from literatures and used for further verification and development of COSMO-RS. Large systematic deviations of 62. 2, 59.6, 63.0, and 59.1% for the logarithmic CO 2 solubilities in the DESs (1:2, 1:3, 1:4, 1:5), respectively, were observed for the prediction with the original COSMO-RS, while the predicted Henry's constants of CO 2 in the DESs (1:1.5, 1:2, 1:3, 1:4, 1:5) at temperatures ranging of 293.15-333.15 K are more accurate than the predicted CO 2 solubility with the original COSMO-RS. To improve the performance of COSMO-RS, 502 data points of CO 2 solubility in the DESs (1:2, 1:3, 1:4, 1:5) were used for correcting COSMO-RS with a temperature-pressure dependent parameter, and the CO 2 solubility in the DES (1:6) was predicted to further verify the performance of the corrected model. The results indicate that the corrected COSMO-RS can significantly improve the model performance with the ARDs decreasing down to 6.5, 4.8, 6.5, and 4.5% for the DESs (1:2, 1:3, 1:4, and 1:5), respectively, and the corrected COSMO-RS with the universal parameters can be used to predict the CO 2 solubility in DESs with different mole ratios, for example, for the DES (1:6), the corrected COSMO-RS significantly improves the prediction with an ARD of 10.3% that is much lower than 78.2% provided by the original COSMO-RS. Additionally, the result from COSMO-RS shows that the σ-profiles can reflect the strength of molecular interactions between an HBA (or HBD) and CO 2 , determining the CO 2 solubility, and the dominant interactions for CO 2 capture in DESs are the H-bond and Van der Waals force, followed by the misfit based on the analysis of the predicted excess enthalpies.

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Section: Excess Enthalpy Predictionsupporting

confidence: 88%

Screening Deep Eutectic Solvents for CO2 Capture With COSMO-RS

Liu

Sun

et al. 2020

Front. Chem.

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“…To build a property model for ATPPB-DEG (the mixture of allyl triphenylphosphonium bromide and diethylene glycol), the density, viscosity and CO 2 solubility of ATPPB-DEG were used to regress property parameters. The experimental data was taken from the work by Ghaedi et al (2017a), Ghaedi et al (2017b), Ghaedi et al (2017c). From the sensitivity analysis results, it was concluded that the liquid surface tension, thermal conductivity, heat capacity and vapor pressure do not influence the CO 2 recovery and therefor these properties have been assumed to be the same as for deca-men.…”

Section: Literature Review Of Deep Eutectic Solvents and Economic Anamentioning

confidence: 99%

Process Simulation and Economic Analysis of Pre-combustion CO2 Capture With Deep Eutectic Solvents

et al. 2020

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The purpose of this paper is to identify firstly the most important solvent characteristics in the CO2 capture process and secondly to determine how they contribute to the total cost of CO2 separation and analyze the economic feasibility of current deep eutectic solvents (DESs) in literature. A rate-based modeling approach was adopted to simulate pre-combustion CO2 capture. The effects of the flow model and the number of segments were investigated for the Selexol process. Different mass transfer correlations due to Bravo et al. (1985), Billet and Schultes (1993) and Hanley and Chen (2012) were adopted for the rate-based models and compared with the equilibrium modelling approach. Subsequently, property and process models were developed for a mixture of decanoic acid and menthol, in equal quantities. A physical property study was conducted with this DES. The CO2 solubility is found to be very important in all rate-based models, as expected, but properties such as the surface tension, thermal conductivity, heat capacity and volatility had a minor influence on the absorption performance. The solvent viscosity strongly affects the mass transfer rate when using the Hanley and Chen (2012) correlations, whereas it plays only a small role in the other two sets of correlations. Using a high CO2 solubility as criterion, two mixtures of allyl triphenylphosphonium bromide (ATPPB) and diethylene glycol (DEG) were screened out from literature. The conventional Selexol process was set as the benchmark for the evaluation of the performances of these DESs. The optimum capture cost for Selexol process is 27.22, 26.66 and 30.84 $2018/tonne CO2 for the adopted correlations, respectively. When employing two of the three studied mass transfer correlations, the estimated process costs for a capture process using this DES can be similar to the costs of the Selexol process. However, when the liquid viscosity strongly affects the mass transfer rate, as is the case when using the Hanley and Chen (2012) correlations, the Selexol process remains more economical. This strongly indicates the need for further experimental and modelling studies on mass transfer rates in absorption columns (with higher viscosity liquids) to help directing the development of suitable DESs for pre-combustion CO2 capture.

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“…Currently, chemical absorption is commonly practiced post combustion CO2 capture technology for CCS. It is mature and well established technique for commercial application [4][5][6]. Aqueous alkanolamines are commonly utilized chemical solvents in absorption process [7].…”

Section: Accepted Manuscriptmentioning

confidence: 99%

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

Hailegiorgis

Man

et al. 2018

Journal of Molecular Liquids

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High-pressure absorption study of CO2 in aqueous N-methyldiethanolamine (MDEA) and MDEA-piperazine (PZ)-1-butyl-3-methylimidazolium trifluoromethanesulfonate [bmim][OTf] hybrid solvents. Abstract:In present study, high pressure CO2 absorption performance of aqueous N-methyldiethanolamine (MDEA) and its hybrid solvents with anhydrous piperazine (PZ) and ionic liquid (IL) 1-butyl-3-methylimidazolium trifluoromethanesulfonate [bmim][OTf] were investigated. The absorption performance of hybrid solvents were carried out to investigate CO2 loading capacity (mol of CO2/mol of solvent), and apparent absorption rate (CO2 capture efficiency, overall rate constant). The CO2 loading capacity of aqueous MDEA and its hybrid solvents were experimentally investigated for a wide range of compositions between pressure ranges of 2 to 50 bar and at three different temperatures (303.15, 313.15, and 333.15 K). Furthermore, apparent absorption rate performance of hybrid solvents were determined at 303.15 K temperature and 2 bar pressure. The effect of temperature, CO2 partial pressure, and ionic liquid (IL) concentrations on CO2 loading of aqueous IL-amines hybrid solvent were also investigated. The results indicated that CO2 loading of hybrid solvents were increased with ACCEPTED MANUSCRIPTA C C E P T E D M A N U S C R I P T 2 increase in CO2 partial pressure and IL concentration (up to 10 wt. %), further increased concentration of IL suppressed CO2 loading capacity. The CO2 loading capacity of hybrid solvents were also reduced with rise in system's temperature. The addition of IL and anhydrous PZ significantly enhanced CO2 capture efficiency (nCO2) and overall absorption rate constant (k) of aqueous MDEA solvent.

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CO2 capture with the help of Phosphonium-based deep eutectic solvents

Cited by 92 publications

References 56 publications

Screening Deep Eutectic Solvents for CO2 Capture With COSMO-RS

Screening Deep Eutectic Solvents for CO2 Capture With COSMO-RS

Process Simulation and Economic Analysis of Pre-combustion CO2 Capture With Deep Eutectic Solvents

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

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