CaltechAUTHORS
Published December 15, 2013 | Version public
Journal Article Metadata-only

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

Creators

  • 1. ROR icon University of Johannesburg
  • 2. ROR icon Stellenbosch University
  • 3. ROR icon Korea Advanced Institute of Science and Technology
  • 4. ROR icon California Institute of Technology

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

Identifiers

Eprint ID
43629
DOI
10.1002/app.39728
Resolver ID
CaltechAUTHORS:20140203-154102965

Funding

University of Johannesburg New Generation Scholars (NGS) Programme

Dates

Created
2014-02-03
Created from EPrint's datestamp field
Updated
2021-11-10
Created from EPrint's last_modified field