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Ultrasonic cleaning of nylon microfiltration membranes fouled by Kraft paper mill effluent

dc.contributor.authorLi J.
dc.contributor.authorSanderson R.D.
dc.contributor.authorJacobs E.P.
dc.date.accessioned2011-05-15T15:59:41Z
dc.date.available2011-05-15T15:59:41Z
dc.date.issued2002
dc.identifier.citationJournal of Membrane Science
dc.identifier.citation205
dc.identifier.citation02-Jan
dc.identifier.issn3767388
dc.identifier.other10.1016/S0376-7388(02)00121-7
dc.identifier.urihttp://hdl.handle.net/10019.1/11310
dc.description.abstractAn ultrasonic technique was successfully applied to remove fouling and recover the permeate flux of flat sheet microfiltration (MF) membranes. Three kinds of cleaning methods were used, namely: forwardflushing, ultrasonic cleaning and ultrasound with forwardflushing, and their cleaning efficiencies were compared. It was found that ultrasound associated with forwardflushing was a new effective method for the recovery of permeate flux. Scanning electron microscopy (SEM) analysis indicated that this method was able to remove fouling layers from a membrane surface and restore the original structure of the membrane surface. The operating conditions during cleaning were investigated. In general, a high forwardflushing velocity and low cleaning solution (water) temperature, under the same ultrasonic conditions, gave higher cleaning efficiency. Moreover, online ultrasound can reduce membrane fouling and enhance permeate flux. The horn sonicator employed had a frequency of 20kHz and a power of 375W. Fouling and cleaning experiments were performed with nylon membranes with 0.2μm average pore diameter. The membranes were fouled by Kraft paper mill effluent. © 2002 Elsevier Science B.V. All rights reserved.
dc.subjectFouling
dc.subjectMicrofiltration
dc.subjectNylon polymers
dc.subjectScanning electron microscopy
dc.subjectUltrasonic cleaning
dc.subjectMicrofiltration membranes
dc.subjectPolymeric membranes
dc.subjectnylon
dc.subjectfouling
dc.subjectmicrofiltration
dc.subjectmill
dc.subjectnylon
dc.subjectorganic membrane
dc.subjectultrasonic cleaning
dc.subjectwastewater treatment plant
dc.subjectarticle
dc.subjectcleaning
dc.subjecteffluent
dc.subjectmembrane structure
dc.subjectmembrane transport
dc.subjectmicrofiltration
dc.subjectpaper industry
dc.subjectpriority journal
dc.subjectscanning electron microscopy
dc.subjecttechnique
dc.subjecttemperature
dc.subjectultrasound
dc.subjectvelocity
dc.titleUltrasonic cleaning of nylon microfiltration membranes fouled by Kraft paper mill effluent
dc.typeArticle
dc.description.versionArticle


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