Effect of operating parameters on CO2 capture from biogas with choline chloride—monoethanolamine deep eutectic solvent and its aqueous solution

COSMO-RS Exploration of Highly CO2-Selective Hydrogen-Bonded Binary Liquid Absorbents under Humid Conditions: Role of Trace Ionic Species

“…Considering the CO 2 /CH 4 selectivity, it was clarified that mixtures including ionic species (choline acetate, betaine hydrochloride, and choline chloride; ChCl) would be more effective than those composed of non-ionic species (Figure b). These data are consistent with the experimental results. − Practically, a small amount of water is often added to reduce the viscosity of DESs; however, the effect of water addition on CO 2 absorption capacity is not clear. ,, Among the narrowed 17,681 mixtures, 438 were predicted to maintain satisfactory CO 2 absorption capacities even under humid conditions (Figure c). Further analyzing the role of ionic species, it was found that more effective absorbents would be obtained when ionic species act as an HBD (blue in Figure c).…”

“…19−21 Practically, a small amount of water is often added to reduce the viscosity of DESs; however, the effect of water addition on CO 2 absorption capacity is not clear. 24,46,47 Among the narrowed 17,681 mixtures, 438 were predicted to maintain satisfactory CO 2 absorption capacities even under humid conditions (Figure 1c). Further analyzing the role of S3) for the organic molecules composing the Class I and II mixtures (light-red and blue, respectively).…”

Reviewing and screening ionic liquids and deep eutectic solvents for effective CO2 capture

“…12 studies have been focused on physical-based DESs since 2021, and their specific names, together with other information, are summarized in Table 3 . Among them, two are newly synthesized ( Deng et al, 2021 ; Pishro et al, 2021 ), while others are the previously synthesized DESs with additional efforts on e.g., high-pressure CO 2 solubility ( Haghbakhsh et al, 2021 ), the effects of water content ( Liu et al, 2022 ), pressure/temperature/stirring rate/water content ( Aboshatta and Magueijo, 2021 ), pressure/temperature/water content ( Yan et al, 2022 ), HBA:HBD molar ratios ( Luo et al, 2021 ; Qin et al, 2021 ), HBA and HBD nature ( Rabhi et al, 2020 ; Haider et al, 2021 ; Luo et al, 2021 ; Mihăilă et al, 2021 ) on the CO 2 solubility.…”

Comprehensive COSMO-RS Exploration of Highly CO2 Selective Hydrogen-bonding Binary Absorbents even under Humid Conditions

“…Practically, a small amount of water is often added to reduce the viscosity of DESs; however, the effect of water addition on CO2 absorbing capacity is not apparent. 24,46,47 Among the 17,417 mixtures, only 390 were not expected to reduce the CO2 absorption capacity before mixing (Figure 1(b)). Here we could see that ionic ChCl-based 48 mixtures listed in Table 1 have higher CO2/CH4 selectivity than non-ionic mixtures, as in the previous reports.…”