The role of reaction time in organic phase on the preparation of thin-film composite nanofiltration (TFC-NF) membrane for dye removal

Dyes are widely used in textile-based industries and inefficiencies in the dying process may result in large amounts of dyestuff being discharged into the wastewater. Membrane separation technology provides relatively high removal for dye wastewater. In this study, local thin-film composite nanofiltration (TFC-NF) membranes for dye removal were fabricated. These membranes were synthesised using an interfacial polymerization technique by reacting m-phenylene diamine (MPD) (2.0% w/w) in an aqueous solution and trimesoyl chloride (TMC) (0.2% w/w) in an organic solution. The role of reaction time (5 s, 10 s, 15 s, 20 s, 30 s, 45 s and 60 s) in organic phase on the morphologies, structural details and performances were examined. Membranes were characterized in terms of permeability coefficient, separation of charged solute, membrane structural details and membrane morphology. All fabricated membrane characteristics were in the range of nanofiltration (NF) membranes. The membrane that was prepared with the reac...