88317 20210126093425.0 doi 10.1016/j.memsci.2019.03.076 sideral 112209 ART-2019-112209 eng Castro-Muñoz, Roberto Towards the dehydration of ethanol using pervaporation cross-linked poly (vinyl alcohol)/graphene oxide membranes 2019 Access copy available to the general public Unrestricted Highly hydrophilic inorganic material graphene oxide (GO) was successfully prepared and incorporated into a cross-linked poly(vinyl alcohol) (PVA) matrix. The obtained mixed matrix membranes (MMMs) have been used for the dehydration of ethanol (10: 90% water-ethanol) by pervaporation (PV), monitoring their performance in terms of total permeate flux, partial components fluxes, as well as their separation factor. The effect of filler was analyzed by doubling the GO content (at 0.5, 1.0, and 2.0 wt%) in the MMMs. A complete analysis of the operating temperature (between 40 and 70 degrees C) was carried out by means of Arrhenius relationship. Moreover, the membranes were characterized by field emission scanning electron microscopy (FESEM), transmission electron microscopy (TEM), differential scanning calorimetry (DSC), thermo-gravimetric analysis (TGA), X-ray diffraction (XRD), Fourier transformed infrared spectroscopy (FTIR), measurements of degree of swelling (uptake), water contact angle (CA) and mechanical properties. At 40 degrees C, the best performance was provided by the MMMs containing 1 wt% GO, showing a separation factor of 263 and a permeate flux of about 0.137 kg m(-2) h(-1) (in which 0.133 kg m(-2) h(-1) corresponds to water). This represents a 75% enhancement of the original permeation rate of pristine cross-linked PVA membranes. Taking into account the promising results, it is likely that these MMMs will provide featured benefits in green processes, e.g. ethanol purification by means of less-energy consumption. info:eu-repo/grantAgreement/ES/DGA/T43-17R info:eu-repo/grantAgreement/EUR/ERASMUS/EUDIME-2011-0014 info:eu-repo/grantAgreement/ES/MINECO-FEDER/MAT2016-77290-R info:eu-repo/semantics/openAccess by-nc-nd http://creativecommons.org/licenses/by-nc-nd/3.0/es/ 7.183 2019 1.898 2019 POLYMER SCIENCE 3 / 89 = 0.034 2019 Q1 T1 Biochemistry 2019 Q1 ENGINEERING, CHEMICAL 10 / 143 = 0.07 2019 Q1 T1 Physical and Theoretical Chemistry 2019 Q1 Materials Science (miscellaneous) 2019 Q1 Filtration and Separation 2019 Q1 info:eu-repo/semantics/article info:eu-repo/semantics/acceptedVersion (orcid)0000-0002-0542-6604 Buera-Gonzalez, Juan (orcid)0000-0003-0297-3503 Iglesia, Óscar de la Galiano, Francesco Fila, Vlastimil (orcid)0000-0001-9595-0831 Malankowska, Magdalena Universidad de Zaragoza Rubio, César Figoli, Alberto (orcid)0000-0002-4954-1188 Tellez, Carlos Universidad de Zaragoza (orcid)0000-0003-1512-4500 Coronas, Joaquín Universidad de Zaragoza 5005 555 Universidad de Zaragoza Dpto. Ing.Quím.Tecnol.Med.Amb. Área Ingeniería Química 582 (2019), 423-434 J. membr. sci. Journal of Membrane Science 0376-7388 1684808 http://zaguan.unizar.es/record/88317/files/texto_completo.pdf Postprint 277149 http://zaguan.unizar.es/record/88317/files/texto_completo.jpg?subformat=icon icon Postprint oai:zaguan.unizar.es:88317 articulos driver 2021-01-26-09:31:03 ARTICLE