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dc.contributor.authorHoek, Eric M.V.
dc.contributor.authorGhosh, Asim K.
dc.contributor.authorHuang, Xiaofei
dc.contributor.authorLiong, Monty
dc.contributor.authorZink, Jeffrey I.
dc.date.accessioned2016-02-25T13:54:37Z
dc.date.available2016-02-25T13:54:37Z
dc.date.issued2011-12
dc.identifier.citationHoek EMV, Ghosh AK, Huang X, Liong M, Zink JI (2011) Physical–chemical properties, separation performance, and fouling resistance of mixed-matrix ultrafiltration membranes. Desalination 283: 89–99. Available: http://dx.doi.org/10.1016/j.desal.2011.04.008.
dc.identifier.issn0011-9164
dc.identifier.doi10.1016/j.desal.2011.04.008
dc.identifier.urihttp://hdl.handle.net/10754/599192
dc.description.abstractHerein we report on the formation and characterization of mixed-matrix ultrafiltration (UF) membranes hand-cast by nonsolvent induced phase inversion. We evaluated nanometer-to-micrometer sized inorganic fillers (silver, copper, silica, zeolite, and silver-zeolite) materials with polysulfone (PSf) as the polymeric dispersing matrix. In general, mixed-matrix membranes were rougher, more hydrophilic, and more mechanically robust. Only sub-micron zeolite-PSf mixed-matrix membranes exhibited simultaneous improvements in water permeability and solute selectivity; all other mixed-matrix membranes were more permeable, but less selective due to defects associated with poor polymer-filler binding. Protein and bacterial fouling resistance of mixed-matrix membranes containing silver, zeolite, and silver-zeolite nanoparticles were compared to a low-fouling, poly(acrylonitrile) (PAN) UF membrane. Zeolite and silver containing membranes exhibited better protein fouling resistance (due to higher hydrophilicity), whereas silver and silver-zeolite based membranes produce better bacterial fouling resistance due to antimicrobial properties. Overall, zeolite-PSf and silver exchanged zeolite-PSf membranes offered the best combination of improved permeability, selectivity, and fouling resistance - superior to the commercial PAN membrane. © 2011 Elsevier B.V.
dc.description.sponsorshipThis publication is based on work supported in part by Award No. KUS-C1-018-02, made by King Abdullah University of Science and Technology (KAUST), in addition to the UCLA California NanoSystems Institute (CNSI), QuantumSphere Inc., and NanoH<INF>2</INF>O Inc. The authors wish to express their appreciation to Prof. Ajit Mal and Shri Harsh K. Vaid in the Department of Mechanical & Aerospace Engineering at UCLA for providing access to the Instron (R) mechanical testing instrument, as well as Dr. Chi Min Ho (UCLA Mechanical & Aerospace Engineering Department) for providing access to the AFM. The authors also thank Dr. Stephen Kloos at GE Water Technologies for supplying PAN membrane samples.
dc.publisherElsevier BV
dc.subjectMixed-matrix
dc.subjectNanocomposite
dc.subjectPoly(acrylonitrile)
dc.subjectPolysulfone
dc.subjectSilver
dc.subjectUltrafiltration
dc.subjectZeolite
dc.titlePhysical–chemical properties, separation performance, and fouling resistance of mixed-matrix ultrafiltration membranes
dc.typeArticle
dc.identifier.journalDesalination
dc.contributor.institutionUniversity of California, Los Angeles, Los Angeles, United States
dc.contributor.institutionBhabha Atomic Research Centre, Mumbai, India
kaust.grant.numberKUS-C1-018-02


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