Pervaporation of the low ethanol content extracting stream generated from the dealcoholization of red wine by membrane osmotic distillation

This paper presents as main contribution the combination of membrane osmotic distillation (OD) to dealcoholize red wine with hydrophobic-hydrophilic pervaporation (PV) carried out add value wastewater (extracting water) produced in OD, recycling water and generating bioethanol. Membrane OD a commercial polypropylene hollow fiber module was applied partially from 14.0 11.0 v/v% ethanol. The extracting water, containing only ca. 5.3 wt% ethanol, treated by sequential PV both hydrophobic (PDMS or zeolite silicalite-1) hydrophilic (zeolites mordenite faujasite) membranes. two products: bioethanol (recovering 88% ethanol removed wine) 99.4 water-rich product. product, very low content, used giving rise an analogous dealcoholized wine, terms aroma contents (as determined gas chromatography for 25 compounds), that achieved when using fresh water.