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Polyurethane and sulfonated polysulfone blend ultrafiltration membranes: II. Application studies

✍ Scribed by Ramamoorthy Malaisamy; Doraiswamy Raju Mohan; Munnuswamy Rajendran

Publisher
John Wiley and Sons
Year
2003
Tongue
English
Weight
123 KB
Volume
52
Category
Article
ISSN
0959-8103

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✦ Synopsis

Abstract

Ultrafiltration membranes are largely being applied for macromolecular and heavy metal ion separations from aqueous streams. Polyurethane‐ and sulfonated‐ polysulfone‐based membranes prepared in the absence and presence of the polymeric additive, poly(ethylene glycol) 600, in various compositions, were subjected to the rejection of macromolecular proteins, such as bovine serum albumin, egg albumin, pepsin and trypsin. Toxic heavy metal ions such as Cu^2+^, Ni^2+^, Cd^2+^ and Zn^2+^ were subjected to rejection by the blend membranes by complexing them with a polymeric ligand, polyethyleneimine. The effects of polymer blend compositions and additive concentrations on the rejection and permeate flux of both proteins and metal ions are discussed. The rejection and permeate flux efficiencies of the blend membranes are compared with pure sulfonated polysulfone membranes.

© 2003 Society of Chemical Industry

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