Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
10396972 | Chemical Engineering and Processing: Process Intensification | 2005 | 8 Pages |
Abstract
The pervaporation separation of acetic acid-water mixtures was performed over a range of 10-90 wt.% acetic acid in the feed at temperatures ranging 25-50 °C using acrylonitrile (AN) grafted poly(vinyl alcohol) (PVA) membranes. The permeation and separation characteristics of PVA-g-AN membranes were studied as a function of membrane thickness, feed composition, operating temperature and pressure. When the downstream pressure increased permeation rate increased with decreasing separation factor and at high acetic acid concentrations PVA-g-AN membranes shows grater tendency for the separation of acetic acid-water mixtures. Depending on the membrane thickness, feed composition and temperature PVA-g-AN membranes gave separation factors 2.3-14 and permeation rates 0.18-1.17 kg/m2 h. It was also determined that PVA-g-AN membranes were found to have lower permeation rate and grater separation factors than PVA membranes.
Keywords
Related Topics
Physical Sciences and Engineering
Chemical Engineering
Process Chemistry and Technology
Authors
N. Alghezawi, O. Åanlı, L. Aras, G. Asman,