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AuthorPerera, D.H.N.
AuthorNataraj, S.K.
AuthorThomson, N.M.
AuthorSepe, A.
AuthorHuttner, S.
AuthorSteiner, U.
AuthorQiblawey, H.
AuthorSivaniah, E.
Available date2016-03-24T13:39:02Z
Publication Date2014-03
Publication NameJournal of Membrane Science
ResourceScopus
Identifierhttp://dx.doi.org/10.1016/j.memsci.2013.10.062
CitationPerera, D.H.N., Nataraj, S.K., Thomson, N.M., Sepe, A., Huttner, S., Steiner, U., Qiblawey, H., Sivaniah, E. "Room-temperature development of thin film composite reverse osmosis membranes from cellulose acetate with antibacterial properties" (2014) Journal of Membrane Science, 453, pp. 212-220.
ISSN0376-7388
URIhttp://hdl.handle.net/10576/4258
AbstractA cellulose acetate thin film composite (CA TFC) membrane was developed by direct casting of CA onto an ultrafiltration membrane support. The flux through the CA TFC membrane was, as expected, inversely proportional to the selective layer thickness. The membrane with the lowest thickness of the CA film (217 nm) initially had poor salt rejection (~55%) but relatively high permeability (~0.5 l m−2 h−1 bar−1). In contrast to asymmetric CA reverse osmosis membranes that are developed in 4 °C water baths, the CA TFC membranes were developed by subsequent swelling in room temperature water baths, thermal annealing at 81 °C, and with room-temperature incorporation of silver nanoparticles onto CA TFC surfaces by chemical reduction. The change in the physical properties as a result of the swelling process was examined with ellipsometry, grazing incidence X-ray scattering and contact angle measurements. A combined swelling and annealing treatment was found to improve salt rejection to an acceptable reverse osmosis salt rejection level (~94%) without significant deterioration of flux. The swelling time was found to generally improve the membrane performance in terms of flux and surface roughness whilst the silver nanoparticle treatment reduced bacterial surface coverage by four orders of magnitude.
SponsorEPSRC, Schlumberger Faculty for the Future (FFTF) Foundation and the Qatar National Research Fund (NPRP 09 - 967 - 2 - 372)
Languageen
PublisherElsevier B.V.
SubjectDesalination
Nanofiltration
Reverse osmosis
Thin film composite membranes
TitleRoom-temperature development of thin film composite reverse osmosis membranes from cellulose acetate with antibacterial properties
TypeArticle
Pagination212-220
Volume Number453
dc.accessType Abstract Only


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