(238e) Novel Thin Film Composite Nanofiltartion Membrane Prepared with Ethylenediamine Functionalized ?-Cyclodextrin for Water Treatment

In this work, a novel amine monomer — ethylenediamine functionalized β-cyclodextrin (β-CD-EDA), was synthesized and employed for the preparation of thin film composite nanofiltration (NF) membrane via the interfacial polymerization with trimesoyl chloride (TMC), to incorporate the intrinsic CD cavities into the polymer network of the selective layer. The chemical structure of the synthesized β-CD-EDA was confirmed by HMRS, FTIR, TGA XPS and ¹H NMR. The chemical properties, surface morphology and the separation performance of TFC membranes prepared with β-CD (TFC_β-CD) and β-CD-EDA (TFC_β-CD-EDA) as aqueous monomers were investigated and compared. The effects of the interfacial polymerization time and β-CD-EDA concentration on the membrane properties were investigated studied as well. The separation performances of TFC_β-CD-EDA membrane were further evaluated with feed solutions containing different solutes. It was found that TFC_β-CD-EDA membranes showed very high rejections to sodium sulfate, magnesium sulfate, sodium citrate, sodium gluconate and glucose. The anti-fouling performances of the TFC_β-CD-EDA membrane were also studied with bovine serum albumin (BSA), humic acid (HA), sodium alginate (SA) as simulated pollutants of protein, natural organic matter, and hydrocarbon in the natural water source, respectively, and the results showed that the membrane possessed excellent fouling resistance to these common foulants.