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Effect of humidity on CO2/N2 and CO2/CH4 separation using novel robust mixed matrix composite hollow fiber membranes: experimental and model evaluation

Abstract: In this work, the performance of new robust mixed matrix composite hollow fiber (MMCHF) membranes with a di erent selective layer composition is evaluated in the absence and presence of water vapor in CO2/N2 and CO2/CH4 separation. The selective layer of these membranes is made of highly permeable hydrophobic poly(trimethyl-1-silylpropine) (PTMSP) and hydrophilic chitosan-ionic liquid (IL-CS) hybrid matrices, respectively, filled with hydrophilic zeolite 4A particles in the first case and HKUST-1 nanoparticles in the second, coated over compatible supports. The effect of water vapor in the feed or using a commercial hydrophobic PDMSXA-10 HF membrane has also been studied for comparison. Mixed gas separation experiments were performed at values of 0 and 50% relative humidity (RH) in the feed and varying CO2 concentration in N2 and CH4, respectively. The performance has been validated by a simple mathematical model considering the effect of temperature and relative humidity on membrane permeability.

 Autoría: Casado-Coterillo C., Fernández-Barquín A., Irabien A.,

 Fuente: Membranes, 2020, 10(1), 6

 Editorial: MDPI

 Fecha de publicación: 01/01/2020

 Nº de páginas: 14

 Tipo de publicación: Artículo de Revista

 DOI: 10.3390/membranes10010006

 ISSN: 2077-0375

 Proyecto español: CTQ2016-76231-C2-1-R