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Naji, M. |
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Motta, Antonella |
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Aletan, Dirar |
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Mohamed, Tarek |
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Ertürk, Emre |
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Taccardi, Nicola |
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Kononenko, Denys |
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Petrov, R. H. | Madrid |
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Alshaaer, Mazen | Brussels |
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Bih, L. |
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Casati, R. |
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Muller, Hermance |
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Kočí, Jan | Prague |
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Šuljagić, Marija |
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Kalteremidou, Kalliopi-Artemi | Brussels |
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Azam, Siraj |
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Ospanova, Alyiya |
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Blanpain, Bart |
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Ali, M. A. |
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Popa, V. |
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Rančić, M. |
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Ollier, Nadège |
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Azevedo, Nuno Monteiro |
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Landes, Michael |
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Rignanese, Gian-Marco |
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Crespo, João Goulão
Universidade Nova de Lisboa
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (14/14 displayed)
- 2024A greener route to prepare PEBAX®1074 membranes for gas separation processescitations
- 2022Purification of ferulic acid from corn fibre alkaline extracts for bio-vanillin production using an adsorption processcitations
- 2021Modelling CO2 absorption in aqueous solutions of cholinium lysinate ionic liquidcitations
- 2021Stability of polymeric membranes to UV exposure before and after coating with TiO2 nanoparticlescitations
- 2020A corrosion evaluation of mild carbon steel in reclaimed refinery stripped sour watercitations
- 2020Nanocomposite membranes from nano-particles prepared by polymerization induced self-assembly and their biocidal activitycitations
- 2018Design of alumina monoliths by emulsion-gel castingcitations
- 2018Hydrogel Composite Membranes Incorporating Iron Oxide Nanoparticles as Topographical Designers for Controlled Heteronucleation of Proteinscitations
- 2017Nano-structured magneto-responsive membranes from block copolymers and iron oxide nanoparticlescitations
- 2017A non-invasive optical method for mapping temperature polarization in direct contact membrane distillationcitations
- 2017Morphological, chemical surface and filtration characterization of a new silicon carbide membranecitations
- 2007Comparison of physicochemical properties of new ionic liquids based on imidazolium, quaternary ammonium, and guanidinium cationscitations
- 2005Elucidating interactions of ionic liquids with polymer films using confocal Raman spectroscopycitations
- 2003Organomercurial removal from vaccine production wastewaters in a supported liquid membrane bioreactor
Places of action
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article
Modelling CO2 absorption in aqueous solutions of cholinium lysinate ionic liquid
Abstract
<p>Ionic liquids (ILs) with quaternary ammonium cations combined with biocompatible anions from renewable sources result in low-toxic, biocompatible, cost-efficient sorbent media that can efficiently capture carbon dioxide (CO<sub>2</sub>). The understanding of the equilibrium and kinetics of CO<sub>2</sub>absorption in these media is relevant for the design of new absorption processes in many application areas, such as CO<sub>2</sub> removal from post-combustion streams, biogas refinery waste gases, or confined spaces. Here CO<sub>2</sub>absorption in an aqueous solution of cholinium lysinate IL is studied both theoretically, via mechanistic modelling, and experimentally in a membrane contactor operated in closed loop with online pH measurement and attenuated total reflectance Fourier transform infrared spectroscopy (ATR-FTIR) analysis of discrete sampling of the circulating aqueous IL solution. It is shown that both techniques are effective tools for CO<sub>2</sub>quantification in the liquid phase. The IL yields an absorption capacity of 2.20 mol of CO<sub>2</sub> per mole of IL for an IL concentration of 2.13 M (or 50 wt% solution). A comprehensive model of chemisorption thermodynamics and absorption dynamics is proposed and validated experimentally. It provides not only the equilibrium constants of the reversible reactions of protonation of the amine groups and bicarbonate binding and overall mass-transfer coefficient based on liquid-phase concentrations, but is also the basis for a chemometric analysis of the experimental ATR-FTIR data. The potential use of ATR-FTIR as a monitoring tool of CO<sub>2</sub> in aqueous solutions of cholinium lysinate IL is also demonstrated.</p>