Document Detail


Filtration method characterizing the reversibility of colloidal fouling layers at a membrane surface: analysis through critical flux and osmotic pressure.
MedLine Citation:
PMID:  18279884     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
A filtration procedure was developed to measure the reversibility of fouling during cross-flow filtration based on the square wave of applied pressure. The principle of this method, the apparatus required, and the associated mathematical relationships are detailed. This method allows for differentiating the reversible accumulation of matter on, and the irreversible fouling of, a membrane surface. Distinguishing these two forms of attachment to a membrane surface provides a means by which the critical flux may be determined. To validate this method, experiments were performed with a latex suspension at different degrees of destabilization (obtained by the addition of salt to the suspension) and at different cross-flow velocities. The dependence of the critical flux on these conditions is discussed and analysed through the osmotic pressure of the colloidal dispersion.
Authors:
Benjamin Espinasse; Patrice Bacchin; Pierre Aimar
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Publication Detail:
Type:  Journal Article     Date:  2008-01-19
Journal Detail:
Title:  Journal of colloid and interface science     Volume:  320     ISSN:  0021-9797     ISO Abbreviation:  J Colloid Interface Sci     Publication Date:  2008 Apr 
Date Detail:
Created Date:  2008-03-17     Completed Date:  2008-06-03     Revised Date:  2009-11-11    
Medline Journal Info:
Nlm Unique ID:  0043125     Medline TA:  J Colloid Interface Sci     Country:  United States    
Other Details:
Languages:  eng     Pagination:  483-90     Citation Subset:  IM    
Affiliation:
Laboratoire de Génie Chimique, Université Paul Sabatier, 31062 Toulouse cedex 9, France.
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MeSH Terms
Descriptor/Qualifier:
Colloids
Latex / chemistry*
Membranes, Artificial*
Models, Chemical*
Surface Properties
Chemical
Reg. No./Substance:
0/Colloids; 0/Latex; 0/Membranes, Artificial

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


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