Mass transfer analysis of CO2 capture by PVDF membrane contactor and ionic liquid

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URI: http://hdl.handle.net/10902/11575
ISSN: 0930-7516
ISSN: 1521-4125
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Autoría
Gómez Coma, LucíaAutoridad Unican; Garea Vázquez, AuroraAutoridad Unican; Irabien Gulías, ÁngelAutoridad Unican
Fecha
2017-04
Derechos
© Wiley-VCH Verlag. This is the peer reviewed version of the following article: Gómez-Coma, L., Garea, A. and Irabien, A. (2017), Mass Transfer Analysis of CO2 Capture by PVDF Membrane Contactor and Ionic Liquid. Chem. Eng. Technol., 40(4), 678-690, which has been published in final form at http://doi.org/10.1002/ceat.201600293. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Self-Archiving.
Publicado en
Chemical Engineering and Technology, 2017, 40(4), 678-690
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Wiley-VCH Verlag
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Palabras clave
CO2 capture
Ionic liquids
Mass transfer coefficient
Membrane contactors
Poly(vinylidene fluoride)
Resumen/Abstract
Post-combustion processes based on ionic liquids (ILs) and membrane contactors are attractive alternatives to traditional systems. Here, a gas stream composed of 15% CO2 and 85% N2 flowed through the lumen side of a hollow-fiber membrane contactor containing poly(vinylidene fluoride)-IL (PVDF-IL) fibers. The IL 1-ethyl-3-methylimidazolium acetate [emim][Ac] served as an absorbent due to its high chemical absorption and CO2 solubility. The overall mass transfer coefficient (Koverall), activation energy (Ea), and resistances of the hollow-fiber membrane were quantified. The Koverall value was one order of magnitude higher than those reported in previous works with conventional solvents, and the Ea was lower than formerly stated values for other solvents. A theoretical simulation was conducted to estimate the operational parameters required for 90% CO2 capture and to quantify intensification effects related to CO2 absorption in a packed column.
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