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Published December 15, 2013 | public
Journal Article

Cyclodextrin-Dendrimer Functionalized Polysulfone Membrane for the Removal of Humic Acid in Water

Abstract

Commercial polysulfone (PSf) membranes were crosslinked with a β-cyclodextrin-poly (propyleneimine) (β-CD-PPI) conjugate which had β-CD pendant arms using trimesoyl chloride (TMC) by interfacial polymerization. The morphology and physicochemical properties of the nanofiltration membranes were characterized using Fourier transform infrared/attenuated total reflectance (FT-IR/ATR) spectroscopy, scanning electron microscopy (SEM), atomic force microscopy (AFM), and cross-flow filtration system. Water-contact angle, water-intake capacity, and rejection capacities of the membranes were evaluated. The β-CD-G4 (generation 4)-PPI-PSf and β-CD-G3 (generation 3)-PPI-PSf membranes both exhibited high humic acid rejection of 72% as compared to the commercial PSf which exhibited 57%. The modified membranes were also more hydrophilic (36° to 41°) than PSf (76°). These results suggest that β-CD-PPI nanostructures are promising materials for the synthesis of membranes for the removal of humic acid from water.

Additional Information

© 2013 Wiley Periodicals, Inc. Received 31 March 2013; accepted 2 July 2013; Published online 22 July 2013. The author (SM) is grateful to the University of Johannesburg New Generation Scholars (NGS) Programme for financial support.

Additional details

Created:
August 22, 2023
Modified:
October 25, 2023