Effect of Feed Temperature and Solution Concentration on Pervaporation for separation of Azeotropic Mixtures

Abstract

In present work reports the Pervaporative separation of azeotropic mixtures using PVA and PVA-PES membrane. The membranes were tested for separation of ethanol/water and Acetonitrile/water system. Flux of membrane has been studied and analyzed as a function of feed composition and temperature where as permeate pressure kept constant for all the experiments as 740 mmHg. In present study comparative experimental results has been presented over a wide range of temperature of 45-75 °C and water concentration varies from 6.25- 14.34 wt%. The experimental results of ethanol/water and Acetonitrile /water system were compared with model data. It was observed that PVA-PES membrane has higher flux and lower separation factor than PVA membrane. A good agreement is shown in between model data and experimental data.