pervaporation

The present work focuses on poly(vinyl alcohol)/ZnO polymer nanocomposite membranes. The nanocomposite membranes are characterized using FTIR, UV-Vis spectra, XRD and SEM techniques. The membranes exhibited preferential water sorption and permeation. Results manifest that the fabricated films can be efficiently utilized to break the azeotropic point of isopropyl alcohol–water mixture.

In the present study hydrophilic sago/polyvinyl alcohol (PVA) blend membranes were used for pervaporation of ethyl acetate-water mixture. The effects of feed concentration, temperature and permeate pressure on the separation factor and permeation flux were studied by using response surface methodology (RSM). The central composite design (CCD) was used to design the experiment and analyze pervaporation performance of homogenous sago/PVA membranes and also to obtain process optimum conditions.