2023-Sustainable Industrial Processing Summit
Kumar Intl. Symp. / Secondary Battery Manufacturing & Recycling
| Editors: | F. Kongoli, K. Aifantis, C. Capiglia, A. Fox, R. Yazami, A. U. H. Qurashi |
| Publisher: | Flogen Star OUTREACH |
| Publication Year: | 2023 |
| Pages: | 90 pages |
| ISBN: | 978-1-989820-82-7 (CD) |
| ISSN: | 2291-1227 (Metals and Materials Processing in a Clean Environment Series) |
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SOLUBILITY MEASUREMENTS AND MODELING OF CO2 AND C2H6 IN THREE FSI-BASED IONIC LIQUIDS
Amr Henni1;1UNIVERSITY OF REGINA, Regina, Canada;
Type of Paper: Regular
Id Paper: 344
Topic: 14
Abstract:
One of the most pressing environmental concerns facing humanity today is the limitation of carbon dioxide emissions. In the field of natural gas sweetening, carbon capture is equally critical. The solubility of carbon dioxide (CO2) and ethane (C2H6) in three ionic liquids (ILs) with the same anion, [C3C1pip][FSI], [C3C1pyrr] [FSI] and [N1223][FSI], was measured at (303.15, 323.15, and 343.15) K and at pressures up to 1.1 MPa.Experimental data were correlated with Peng-Robinson (PR) equation of state using three different mixing rules: (i) van der Waals one (vdW1, based on a single binary interaction parameter), (ii) van der Waals two (vdW2, based on two binary interaction parameters), and (iii) Wong-Sandler mixing rules combined with NRTL model. Henry's law constants, enthalpy and entropy for the absorption of Carbon dioxide and ethane in these ILs were also estimated. No significant change was found in the values of Henry's law constants of C2H6 in these three ILs which indicates a negligible effect of cations of these ILs on C2H6 solubility. The selectivity towards carbon dioxide (CO2) over C2H6 for these ILs was also reported. [FSI]-based ILs seem to have higher selectivity than all the other ILs, except for [C4C1Im][BF4] and possibly [C4C1Im][PF6], which may qualify them as promising solvents for CO2 removal from natural gas streams.