Author, as appears in the article.: Zare, A; Boukalfa, AK; Nogalska, A; Puga, A; Cerruti, P; Pascual-Jose, B; Ribes-Greus, A; Giamberini, M
Department: Enginyeria Química
URV's Author/s: Puga Vaca, Alberto / Zare, Alireza
Keywords: Polysulfone Polyethylene imine Phenyl isocyanate Membrane contactor Hollow-fiber membranes Direct air capture Carbon dioxide separation removal rates progress polysulfone polyethylene imine phenyl isocyanate performance morphology membrane contactor direct air capture co2 assimilation absorbents
Abstract: This paper reports the preparation and characterization of asymmetric membranes for direct air capture (DAC) in polysulfone membrane contactors. In the previous studies it was found that blending the polysulfone with modified Lupasol G20 improved the polysulfone membrane performance; however, the hydrophobicity and stability of the additive require improvement for the application in gas/liquid system. In order to achieve this objective, in the current study, Lupasol G20 was grafted with phenyl isocyanate via urea linkages in a solvent-free and eco-friendly method. Membranes with different amount of the additive were prepared by phase inversion and characterized by several techniques in terms of morphology, porosity, wettability, and stability in aqueous KOH solution. Finally, CO2 solubility and mass transfer coefficient were determined and correlated with membranes’ performance in the direct air capture device. In general, it was found that the presence of the additive greatly improved the characteristics of the membranes in terms of CO2 capture efficiency and robustness, outperforming the results obtained previously. The best results for were obtained with 5% additive content reaching 0.18 [mol/m2s].
Thematic Areas: Waste management and disposal Química Process chemistry and technology Engineering, chemical Engenharias ii Ciências ambientais Ciência de alimentos Chemistry, multidisciplinary Chemical engineering (miscellaneous) Biodiversidade
licence for use: https://creativecommons.org/licenses/by/3.0/es/
Author's mail: alberto.puga@urv.cat alireza.zare@urv.cat
Author identifier: 0000-0003-4201-2635 0000-0002-6981-8914
Record's date: 2024-02-17
Papper version: info:eu-repo/semantics/publishedVersion
Link to the original source: https://www.sciencedirect.com/science/article/pii/S2212982023002408
Papper original source: Journal Of Co2 Utilization. 78
APA: Zare, A; Boukalfa, AK; Nogalska, A; Puga, A; Cerruti, P; Pascual-Jose, B; Ribes-Greus, A; Giamberini, M (2023). Modified polyethyleneimine as additive for enhanced direct air capture via membrane contactors. Journal Of Co2 Utilization, 78(), -. DOI: 10.1016/j.jcou.2023.102629
Licence document URL: https://repositori.urv.cat/ca/proteccio-de-dades/
Article's DOI: 10.1016/j.jcou.2023.102629
Entity: Universitat Rovira i Virgili
Journal publication year: 2023
Publication Type: Journal Publications
Repositori URV