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Nanostructured β-Cyclodextrin-Hyperbranched Polyethyleneimine (β-CD-HPEI) Embedded in Polysulfone Membrane for the Removal of Humic Acid from Water

Malinga, S. P. and Arotiba, O. A. and Krause, R. W. M. and Mapolie, S. F. and Diallo, M. S. and Mamba, B. B. (2013) Nanostructured β-Cyclodextrin-Hyperbranched Polyethyleneimine (β-CD-HPEI) Embedded in Polysulfone Membrane for the Removal of Humic Acid from Water. Separation Science and Technology, 48 (18). pp. 2724-2734. ISSN 0149-6395.

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The synthesis of a new β-cyclodextrin-hyperbranched polyethyleneimine (β-CD-HPEI)/polysulfone (PSf) membranes via interfacial polymerization of trimesoyl chloride and β-CD-HPEI is described in this paper. The membranes were characterized by atomic force microscopy (AFM), high resolution scanning electron microscopy (HR-SEM) and contact-angle measurements. Water permeability and rejection data were obtained using a cross-flow filtration system at 0.69 MPa. The membranes were hydrophilic (25° to 63°), showed high humic acid rejection (>80%), and maintained a constant flux throughout the filtration. The modified membranes were rougher than the pristine PSf membranes but they exhibited better antifouling properties due to the hydrophilic surface which acted as a barrier against humic acid deposition. The modification of PSf with β-CD-HPEI resulted in enhanced hydrophilicity and water permeability while still maintaining high humic acid rejection. Supplemental materials are available for this article. Go to the publisher's online edition of Separation Science & Technology to view the supplemental file.

Item Type:Article
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Diallo, M. S.0000-0002-2571-1568
Additional Information:© 2013 Taylor & Francis Group, LLC. Received: 28 Nov 2012; Accepted: 23 May 2013; Accepted author version posted online: 20 Aug 2013; Published online: 08 Nov 2013. The author S. P. Malinga is grateful to the University of Johannesburg New Generation Scholars (NGS) Programme for funding. The DST/MINTEK Nanotechnology Innovation Centre is also acknowledged for funding this work.
Funding AgencyGrant Number
University of Johannesburg New Generation Scholars (NGS) ProgrammeUNSPECIFIED
DST/MINTEK Nanotechnology Innovation CentreUNSPECIFIED
Subject Keywords:β-cyclodextrin; humic acid; hyperbranched polyethyleneimine; polysulfone; water treatment
Issue or Number:18
Record Number:CaltechAUTHORS:20140108-143746334
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Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:43275
Deposited By: Tony Diaz
Deposited On:10 Jan 2014 17:30
Last Modified:09 Mar 2020 13:18

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