Polybenzimidazole Forward Osmosis Membranes Functionalized for Increased Surface Charge and Hydrophilicity

摘要

Forward osmosis involves the movement of water across a selectively permeable membrane. Unlike pressure driven processes, such as reverse osmosis (RO), the driving force for water permeation through the membrane in FO is the difference in osmotic pressure between the feed and draw solutions. Researchers in Singapore, recently, developed a hollow fiber nanofiltration (NF) forward osmosis membrane made of polybenzimidazole (PBI).