Non-invasive visualization of the fouling of microfiltration membranes by ultrasonic time-domain reflectometry.

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dc.contributor.authorLi, J
dc.contributor.authorSanderson, R
dc.contributor.authorJacobs, E
dc.date.accessioned2016-08-04T09:24:24Z
dc.date.available2016-08-04T09:24:24Z
dc.date.issued2002
dc.date.updated2016-08-04T08:00:19Z
dc.description.abstractAn ultrasonic time-domain reflectometry (UTDR) technique has been applied to the non-invasive study of fouling in microfiltration (MF) membrane modules operating at 100 kPa. The experimental results show a good correspondence between the UTDR signal response from the membranes and the development of a fouling layer on the membrane surface. The ultrasonic technique could effectively detect fouling-layer initiation and growth on the membrane in real-time. For experiments conducted at different axial velocities, ranging from 1.83 to 23.0 cm/s (Re from 65.4 to 811), a sequential mode fouling layer growth was observed. The UTDR technique was capable of distinguishing individual modes of growth. The data also suggest the formation of a second echo in the time domain at 100 kPa operating pressure. Therefore, the UTDR technique was used to quantify the thickness of a fouling layer. The non-invasive UTDR visualization of the fouling on the membrane surface was supported by “post-mortem” SEM analysis of the membrane surface. The UTDR technique can be more suitable for non-invasive visualization of the fouling in MF system.en_ZA
dc.identifierhttp://dx.doi.org/10.1016/S0376-7388(01)00664-0
dc.identifier.apacitationLi, J., Sanderson, R., & Jacobs, E. (2002). Non-invasive visualization of the fouling of microfiltration membranes by ultrasonic time-domain reflectometry. <i>Journal of Membrane Science</i>, http://hdl.handle.net/11427/21110en_ZA
dc.identifier.chicagocitationLi, J, R Sanderson, and E Jacobs "Non-invasive visualization of the fouling of microfiltration membranes by ultrasonic time-domain reflectometry." <i>Journal of Membrane Science</i> (2002) http://hdl.handle.net/11427/21110en_ZA
dc.identifier.citationLi, J., Sanderson, R. D., & Jacobs, E. P. (2002). Non-invasive visualization of the fouling of microfiltration membranes by ultrasonic time-domain reflectometry. Journal of Membrane Science, 201(1), 17-29.en_ZA
dc.identifier.issn0376-7388en_ZA
dc.identifier.ris TY - Journal Article AU - Li, J AU - Sanderson, R AU - Jacobs, E AB - An ultrasonic time-domain reflectometry (UTDR) technique has been applied to the non-invasive study of fouling in microfiltration (MF) membrane modules operating at 100 kPa. The experimental results show a good correspondence between the UTDR signal response from the membranes and the development of a fouling layer on the membrane surface. The ultrasonic technique could effectively detect fouling-layer initiation and growth on the membrane in real-time. For experiments conducted at different axial velocities, ranging from 1.83 to 23.0 cm/s (Re from 65.4 to 811), a sequential mode fouling layer growth was observed. The UTDR technique was capable of distinguishing individual modes of growth. The data also suggest the formation of a second echo in the time domain at 100 kPa operating pressure. Therefore, the UTDR technique was used to quantify the thickness of a fouling layer. The non-invasive UTDR visualization of the fouling on the membrane surface was supported by “post-mortem” SEM analysis of the membrane surface. The UTDR technique can be more suitable for non-invasive visualization of the fouling in MF system. DA - 2002 DB - OpenUCT DP - University of Cape Town J1 - Journal of Membrane Science LK - https://open.uct.ac.za PB - University of Cape Town PY - 2002 SM - 0376-7388 T1 - Non-invasive visualization of the fouling of microfiltration membranes by ultrasonic time-domain reflectometry TI - Non-invasive visualization of the fouling of microfiltration membranes by ultrasonic time-domain reflectometry UR - http://hdl.handle.net/11427/21110 ER - en_ZA
dc.identifier.urihttp://hdl.handle.net/11427/21110
dc.identifier.vancouvercitationLi J, Sanderson R, Jacobs E. Non-invasive visualization of the fouling of microfiltration membranes by ultrasonic time-domain reflectometry. Journal of Membrane Science. 2002; http://hdl.handle.net/11427/21110.en_ZA
dc.languageengen_ZA
dc.publisherElsevieren_ZA
dc.publisher.institutionUniversity of Cape Town
dc.rightsCreative Commons Attribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0)*
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/4.0/en_ZA
dc.sourceJournal of Membrane Scienceen_ZA
dc.source.urihttp://www.journals.elsevier.com/journal-of-membrane-science/
dc.subject.otherMicrofiltration
dc.subject.otherMembrane fouling
dc.subject.otherNon-invasive visualization
dc.subject.otherUltrasonic time-domain reflectometry
dc.titleNon-invasive visualization of the fouling of microfiltration membranes by ultrasonic time-domain reflectometry.en_ZA
dc.typeJournal Articleen_ZA
uct.type.filetypeText
uct.type.filetypeImage
uct.type.publicationResearchen_ZA
uct.type.resourceArticleen_ZA
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