Impact of solvents and process conditions on the formation of polyethersulfone membranes and its fouling behavior in lake water filtration

摘要

BACKGROUND: The existence of natural organic colloids causes membrane fouling, which decreases the flux rate. Hence, membrane modification and lake water pretreatment were carried out to improve membrane performance. In this study, important preparation parameters such as solvents (N, N-dimethylformamide (DMF), N, N-dimethylacetamide (DMAc), dimethyl sulfoxide (DMSO) and N-methyl-2-pyrrolidone (NMP)), coagulant bath temperature (CBT) (10, 20 and 30 degrees C) and coagulant (sodium dodecyl sulfate SDS): 0.5, 1.0 and 1.5 g L-1) were optimized for the fabrication of high flux polyethersulfone (PES) membrane. Cloisite was used for the pretreatment of lake water.