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Lorena Paseta,Marta Navarro,Joaquín Coronas,Carlos Téllez 한국공업화학회 2019 Journal of Industrial and Engineering Chemistry Vol.77 No.-
The toxic solvent dimethylformamide has been replaced by the greener dimethylsulfoxide in the castingand activation processes for the preparation of thinfilm composite (TFC) membranes. This methodologyhas been validated with the use of MOFs ZIF-8, ZIF-93 and UiO-66 asfillers for thin-film nanocomposite(TFN) membranes. These membranes were successfully applied in the organic solvent nanofiltration ofsunset yellow (SY) in methanol obtaining the highest permeance when UiO-66 and ZIF-93 were usedwith a value of 11 L m 2 h-1 bar-1. The permeance improvements are related to the MOF porosity,polyamide-MOF layer thickness and the hydrophilic/hydrophobic character of the membrane.
Lilian Sarango,Lorena Paseta,Marta Navarro,Beatriz Zornoza,Joaquín Coronas 한국공업화학회 2018 Journal of Industrial and Engineering Chemistry Vol.59 No.-
ZIF-8 and ZIF-67 particles, with sizes of 70 ± 10 nm and 240 ± 40 nm, respectively, were deposited by dip-coating on top of polyimide P84® asymmetric supports. In the best conditions, this gives rise to a MOF (metal-organic framework) monolayer which remains on the polyimide support during the interfacial polymerization of polyamide carried out to produce a thin film nanocomposite membrane for organic solvent nanofiltration (OSN). This method is simple, shorter and is environmentally friendly, since no excess MOF is lost during the interfacial polymerization, exhibiting good OSN results: dye rejection of 90% together with a high methanol permeance of 8.7 L m−2 h−1 bar−1.
Javier Esteras-Saz,Óscar de la Iglesia,Izumi Kumakiri,Cristina Peña,Ana Escudero,Carlos Téllez,Joaquín Coronas 한국공업화학회 2023 Journal of Industrial and Engineering Chemistry Vol.122 No.-
This paper presents as main contribution the combination of membrane osmotic distillation (OD) to dealcoholizered wine with hydrophobic-hydrophilic pervaporation (PV) carried out to add value to thewastewater (extracting water) produced in OD, recycling water and generating bioethanol. MembraneOD with a commercial polypropylene hollow fiber module was applied to partially dealcoholize red winefrom 14.0 to 11.0 v/v% ethanol. The OD extracting water, containing only ca. 5.3 wt% ethanol, was treatedby sequential PV with both hydrophobic (PDMS or zeolite silicalite-1) and hydrophilic (zeolites mordeniteor faujasite) membranes. This hydrophobic-hydrophilic PV produced two main products: bioethanol(recovering 88% of the ethanol removed from the wine) and a 99.4 wt% water-rich product. This waterrichproduct, with a very low ethanol content, was used as extracting water in the OD, giving rise to ananalogous partially dealcoholized wine, in terms of aroma contents (as determined by gas chromatographyfor 25 compounds), to that achieved when using fresh water.