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Article: Multiphase flow models in quantifying constant pressure dead-end filtration and subsequent cake compression. 2. Concentrated slurry filtration and cake compression

TitleMultiphase flow models in quantifying constant pressure dead-end filtration and subsequent cake compression. 2. Concentrated slurry filtration and cake compression
Authors
KeywordsConsolidation
Filterability
Filtration model
Gel point
Moisture ratio
Rowe cell
Issue Date2008
PublisherElsevier BV. The Journal's web site is located at http://www.elsevier.com/locate/memsci
Citation
Journal Of Membrane Science, 2008, v. 308 n. 1-2, p. 44-53 How to Cite?
AbstractSeparation of liquid from concentrated slurry is a significant process in laboratory and engineering applications. In an earlier paper (X.M. Wang, S. Chang, P. Kovalsky, T.D. Waite, Multiphase flow models in quantifying constant pressure dead-end filtration and subsequent cake compression. 1. Dilute slurry filtration, J. Membr. Sci., in press), we investigated the applicability of the Smiles and Tiller multiphase flow models to description of the filtration behavior of dilute yeast slurries and here extend the analysis to consideration of concentrated slurries. Smiles' and Tiller's models are employed to quantify dynamic filtration behavior while a numerical technique derived from Smiles' method is utilized for cake compression stage characterization. The numerical method for Smiles' model for concentrated slurry filtration is the same as that for dilute slurry, while an iteration step is added to the method for Tiller's model. The results obtained indicate that the Smiles and Tiller models are equivalent in quantifying filtration behavior and cake structure of concentrated slurry and reveal that the cake structure and the ensuing filtration behavior are affected by the initial slurry solid fraction. The cake formed from slurry with a higher initial solid fraction tends to have a lower average solid fraction and a lower average specific resistance than is the case for lower initial slurry solid fractions. The variance of superficial liquid velocity through the cake during concentrated slurry filtration is much more significant than is the case during dilute slurry filtration suggesting that caution should be exercised in employing the conventional filtration model in concentrated slurry filtration data analysis. During the compression stage, the compression rate is relatively constant at the beginning then drops sharply before adopting a relatively stable value at longer times. Concomitantly, the solid compressive pressure of the upper surface of the cake increases slowly at the beginning, quickly after that and then slowly again. © 2007 Elsevier B.V. All rights reserved.
Persistent Identifierhttp://hdl.handle.net/10722/132404
ISSN
2015 Impact Factor: 5.557
2015 SCImago Journal Rankings: 2.042
ISI Accession Number ID
References

 

DC FieldValueLanguage
dc.contributor.authorWang, XMen_HK
dc.contributor.authorKovalsky, Pen_HK
dc.contributor.authorWaite, TDen_HK
dc.date.accessioned2011-03-28T09:24:10Z-
dc.date.available2011-03-28T09:24:10Z-
dc.date.issued2008en_HK
dc.identifier.citationJournal Of Membrane Science, 2008, v. 308 n. 1-2, p. 44-53en_HK
dc.identifier.issn0376-7388en_HK
dc.identifier.urihttp://hdl.handle.net/10722/132404-
dc.description.abstractSeparation of liquid from concentrated slurry is a significant process in laboratory and engineering applications. In an earlier paper (X.M. Wang, S. Chang, P. Kovalsky, T.D. Waite, Multiphase flow models in quantifying constant pressure dead-end filtration and subsequent cake compression. 1. Dilute slurry filtration, J. Membr. Sci., in press), we investigated the applicability of the Smiles and Tiller multiphase flow models to description of the filtration behavior of dilute yeast slurries and here extend the analysis to consideration of concentrated slurries. Smiles' and Tiller's models are employed to quantify dynamic filtration behavior while a numerical technique derived from Smiles' method is utilized for cake compression stage characterization. The numerical method for Smiles' model for concentrated slurry filtration is the same as that for dilute slurry, while an iteration step is added to the method for Tiller's model. The results obtained indicate that the Smiles and Tiller models are equivalent in quantifying filtration behavior and cake structure of concentrated slurry and reveal that the cake structure and the ensuing filtration behavior are affected by the initial slurry solid fraction. The cake formed from slurry with a higher initial solid fraction tends to have a lower average solid fraction and a lower average specific resistance than is the case for lower initial slurry solid fractions. The variance of superficial liquid velocity through the cake during concentrated slurry filtration is much more significant than is the case during dilute slurry filtration suggesting that caution should be exercised in employing the conventional filtration model in concentrated slurry filtration data analysis. During the compression stage, the compression rate is relatively constant at the beginning then drops sharply before adopting a relatively stable value at longer times. Concomitantly, the solid compressive pressure of the upper surface of the cake increases slowly at the beginning, quickly after that and then slowly again. © 2007 Elsevier B.V. All rights reserved.en_HK
dc.languageengen_US
dc.publisherElsevier BV. The Journal's web site is located at http://www.elsevier.com/locate/memscien_HK
dc.relation.ispartofJournal of Membrane Scienceen_HK
dc.subjectConsolidationen_HK
dc.subjectFilterabilityen_HK
dc.subjectFiltration modelen_HK
dc.subjectGel pointen_HK
dc.subjectMoisture ratioen_HK
dc.subjectRowe cellen_HK
dc.titleMultiphase flow models in quantifying constant pressure dead-end filtration and subsequent cake compression. 2. Concentrated slurry filtration and cake compressionen_HK
dc.typeArticleen_HK
dc.identifier.emailWang, XM: wangxm@hku.hken_HK
dc.identifier.authorityWang, XM=rp01452en_HK
dc.description.naturelink_to_subscribed_fulltexten_US
dc.identifier.doi10.1016/j.memsci.2007.09.041en_HK
dc.identifier.scopuseid_2-s2.0-37249059272en_HK
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-37249059272&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume308en_HK
dc.identifier.issue1-2en_HK
dc.identifier.spage44en_HK
dc.identifier.epage53en_HK
dc.identifier.isiWOS:000252910800003-
dc.publisher.placeNetherlandsen_HK
dc.identifier.scopusauthoridWang, XM=23092524200en_HK
dc.identifier.scopusauthoridKovalsky, P=8546184100en_HK
dc.identifier.scopusauthoridWaite, TD=7004869232en_HK

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