Development of Composite Thin-Film Nanofiltration Membranes Based on Polyethersulfone for Water Purification

The development of thin-film composite membranes has gained more importance as they exhibit higher permeability, solute rejection and improved antifouling behavior. incorporation hydrophilic nanomaterials within the thin film reported to effectively increase hydrophilicity improve membrane performance. In this study novel nanofiltration were prepared by interfacial polymerization trimesoyl chloride, polyvinylpyrolidone (PVP) montmorillonite (MMT) on porous polyethersulfone membrane. effect preparation parameters was studied as; reaction time, PVP concentration MMT content. properties analyzed in terms their chemical structure, surface morphological features, pure water contact angle, zeta potential, permeation flux (PWP) solutes rejection. showed smoother surfaces, different surfaces functionality amphoteric with points zero charge at pH 7–7.5. PWP found increasing content up 0.10 wt%. crystal violet dye (CV) using membranes. 0.5% PVP, 0.10% 6 min time 18.1 L/m2 h bar CV 80.01%. Na2SO4 MgCl2 increased reached 96% 35.4%, respectively. steady state decreased 5% from 0.12 wt% indicating behavior MMT.