HIGH PERFORMANCE POSITIVELY CHARGED COMPOSITE MEMBRANES AND THEIR USE IN NANOFILTRATION PROCESSES

摘要

The present invention is directed to positively charged nanofiltration (NF) membranes comprising a substrate layer (S) based on a sulfonated polymer and a positively charged film layer (F) on top of said substrate, and to a method for their preparation. Furthermore, the present invention is directed to nanofiltration processes making use of said composite membrane.