NDLI: Clogging of a single pore by colloidal particles

Content Provider	Springer Nature Link
Author	Dersoir, Benjamin Saint Vincent, Matthieu Robert Abkarian, Mauk Tabuteau, Hervé
Copyright Year	2015
Abstract	The clogging of porous media by colloidal particles is a complex process which relies on many different physical phenomena. The formation and the structure of a clog results from the interplay between hydrodynamics (flow rate and pore geometry) and the DLVO forces (particle–particle and particle–wall). In order to get a better understanding of this process, we study the clogging of a microfluidic filter, at the single pore level, and determine the influence of each relevant parameter separately. We show that in order to form stable clogs, colloidal particles have to pile up over a length in the flow direction roughly equal to the width of the pore. We found that there are two clogging regimes, which depend on the applied pressure. In the first one, at low pressures, the length of the clog within the pore and the number of particles that pass through the pore prior to clogging are constant. In the second one, for higher pressures, both quantities increase with the pressure. We also show that a higher ionic strength accelerates the clog formation, keeping constant the length of the clog.
Starting Page	953
Ending Page	961
Page Count	9
File Format	PDF
ISSN	16134982
Journal	Microfluidics and Nanofluidics
Volume Number	19
Issue Number	4
e-ISSN	16134990
Language	English
Publisher	Springer Berlin Heidelberg
Publisher Date	2015-08-15
Publisher Place	Berlin, Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Clogging Microfluidics Colloid Pore scale Engineering Fluid Dynamics Biomedical Engineering Analytical Chemistry Nanotechnology and Microengineering
Content Type	Text
Resource Type	Article
Subject	Nanoscience and Nanotechnology Materials Chemistry Condensed Matter Physics Electronic, Optical and Magnetic Materials

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1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
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3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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