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A comprehensive model for cross-flow filtration incorporating polydispersity of the influent

Identifieur interne : 00DB07 ( Main/Exploration ); précédent : 00DB06; suivant : 00DB08

A comprehensive model for cross-flow filtration incorporating polydispersity of the influent

Auteurs : H. B. Dharmappa [Thaïlande] ; J. Verink [Thaïlande] ; R. Ben Aim [France] ; K. Yamamoto [Japon] ; S. Vigneswaran [Australie]

Source :

Journal of Membrane Science [ 0376-7388 ] ; 1992.

RBID : ISTEX:930141BEB3A19CF699B629D64FEB2B7EDEC60618

Descripteurs français

Wicri :
- topic : Technologie propre.

English descriptors

Abstract

Abstract: A semi-empirical model is presented for the prediction of foulant deposit thickness and concentration, and thereby, predicting the permeate flux in cross-flow microfiltration and ultrafiltration. The scope of the model is limited to colloidal suspensions (i.e. non-diffusive solutes) and its hallmark is its applicability to polydispersed influents. The theoretical model was verified with experimental observations and found to yield a fairly good agreement with an error less than 62% of the average flux over 100 min of filtration. However, evaluation of model coefficients a and b is necessary through laboratory studies. The model was successfully used to predict the effect of particle size distribution (PSD) on permeate flux. The simulation results corroborate the contention that the long-term flux decline is due to the reduction is foulant deposit permeability via infiltration of fines into the cake, thereby demonstrating the importance of influent particle size distribution (PSD) on foulant deposit permeability. The proposed model is a first step towards the modeling of polydispersed influents. As such there is a lot of scope for further refinements which is briefly discussed.

Url:

https://api.istex.fr/document/930141BEB3A19CF699B629D64FEB2B7EDEC60618/fulltext/pdf

DOI: 10.1016/0376-7388(92)87063-4

Affiliations:

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Le document en format XML

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<author><name sortKey="Verink, J" sort="Verink, J" uniqKey="Verink J" first="J." last="Verink">J. Verink</name>
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<author><name sortKey="Ben Aim, R" sort="Ben Aim, R" uniqKey="Ben Aim R" first="R." last="Ben Aim">R. Ben Aim</name>
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<author><name sortKey="Yamamoto, K" sort="Yamamoto, K" uniqKey="Yamamoto K" first="K." last="Yamamoto">K. Yamamoto</name>
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<term>Clean technology</term>
<term>Comprehensive model</term>
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<term>Effective radms</term>
<term>Elsevler science publishers</term>
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<term>Filtration</term>
<term>Fine particles</term>
<term>Flow filtration</term>
<term>Flux decline</term>
<term>Foulant</term>
<term>Foulant deposit</term>
<term>Foulant layer</term>
<term>Foulant layer concentration</term>
<term>Foulant layer growth</term>
<term>Foulant layer thickness</term>
<term>Harwell laboratory</term>
<term>Hydrodynamic resistance</term>
<term>Jang</term>
<term>Laboratory studies</term>
<term>Larger particles</term>
<term>Lateral migration</term>
<term>Layer</term>
<term>Mass balance</term>
<term>Mass flux</term>
<term>Mass transport</term>
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<term>Membrane filtration</term>
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<term>Mfluent concentration</term>
<term>Mfluent particle size distribution</term>
<term>Model coefficients</term>
<term>Model parameters</term>
<term>Model predictions</term>
<term>Module</term>
<term>Operatmg conditions</term>
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<term>Particle size classes</term>
<term>Same model</term>
<term>Size class</term>
<term>Small value</term>
<term>Smaller particles</term>
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<term>Solids fraction</term>
<term>Steady state</term>
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<term>Hydrodynamic resistance</term>
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<term>Laboratory studies</term>
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<term>Lateral migration</term>
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<term>Mass balance</term>
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<term>Mass transport</term>
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<term>Membrane module</term>
<term>Membrane pore size</term>
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<term>Mfluent concentration</term>
<term>Mfluent particle size distribution</term>
<term>Model coefficients</term>
<term>Model parameters</term>
<term>Model predictions</term>
<term>Module</term>
<term>Operatmg conditions</term>
<term>Other hand</term>
<term>Parameter</term>
<term>Particle size classes</term>
<term>Same model</term>
<term>Size class</term>
<term>Small value</term>
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<term>Solids concentration</term>
<term>Solids fraction</term>
<term>Steady state</term>
<term>Time step</term>
<term>Total number</term>
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<term>Transport velocity</term>
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<front><div type="abstract" xml:lang="en">Abstract: A semi-empirical model is presented for the prediction of foulant deposit thickness and concentration, and thereby, predicting the permeate flux in cross-flow microfiltration and ultrafiltration. The scope of the model is limited to colloidal suspensions (i.e. non-diffusive solutes) and its hallmark is its applicability to polydispersed influents. The theoretical model was verified with experimental observations and found to yield a fairly good agreement with an error less than 62% of the average flux over 100 min of filtration. However, evaluation of model coefficients a and b is necessary through laboratory studies. The model was successfully used to predict the effect of particle size distribution (PSD) on permeate flux. The simulation results corroborate the contention that the long-term flux decline is due to the reduction is foulant deposit permeability via infiltration of fines into the cake, thereby demonstrating the importance of influent particle size distribution (PSD) on foulant deposit permeability. The proposed model is a first step towards the modeling of polydispersed influents. As such there is a lot of scope for further refinements which is briefly discussed.</div>
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A comprehensive model for cross-flow filtration incorporating polydispersity of the influent

A comprehensive model for cross-flow filtration incorporating polydispersity of the influent

Source :

Descripteurs français

English descriptors

Abstract

Links toward previous steps (curation, corpus...)

Le document en format XML

Pour manipuler ce document sous Unix (Dilib)

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