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Publication Details
AFRICAN RESEARCH NEXUS
SHINING A SPOTLIGHT ON AFRICAN RESEARCH
biochemistry, genetics and molecular biology
Preparation and characterization of polysulfone/β-cyclodextrin polyurethane composite nanofiltration membranes
Journal of Membrane Science, Volume 405-406, Year 2012
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Description
This work presents the preparation and characterization of polysulfone (PSf)/β-cyclodextrin (β-CD) polyurethane composite membranes using a modified phase inversion technique. β-CD polyurethane was blended with PSf at concentrations of 0-10% to prepare nanofiltration (NF) membranes for selective removal of Cd 2+ ions from water at a working pH of 6.9. Mixed matrix β-CD polyurethane/PSf membranes were more hydrophilic with higher water permeability and higher Cd 2+ rejection (up to 70%). However, the mixed matrix membranes were also rougher, less porous, took up more water, and were less mechanically stable. Further, FT-IR results indicate hydrogen bonding interactions between β-CD polyurethane and PSf, which suggests that the materials are compatible. Dead-end filtration tests suggest that mixed matrix membranes have higher water flux. This suggests that the combination of β-CD polyurethane with PSf can produce viable nanofiltration with improved flux without a compromise on its rejection ability. © 2012 Elsevier B.V.
Authors & Co-Authors
Adams, Feyisayo Victoria
South Africa, Johannesburg
University of Johannesburg
Nxumalo, Edward N.
South Africa, Johannesburg
University of Johannesburg
Krause, Rui M.W.
South Africa, Johannesburg
University of Johannesburg
Hoek, Eric M.V.
United States, Los Angeles
University of California, Los Angeles
United States, Los Angeles
California Nanosystems Institute
Mamba, Bhekie B.
South Africa, Johannesburg
University of Johannesburg
Statistics
Citations: 98
Authors: 5
Affiliations: 3
Identifiers
Doi:
10.1016/j.memsci.2012.03.023
ISSN:
03767388
e-ISSN:
18733123
Research Areas
Environmental