Pore cross-talk in colloidal filtration

被引：13

作者：

Liot, Olivier ^{[1
,2
,6
]}

Singh, Akash ^{[1
]}

Bacchin, Patrice ^{[3
]}

Duru, Paul ^{[4
]}

Morris, Jeffrey F. ^{[5
]}

Joseph, Pierre ^{[1
]}

机构：

[1] Univ Toulouse, CNRS, LAAS, Toulouse, France

[2] INP, Federat FERMaT, Toulouse, France

[3] Univ Toulouse, CNRS, Lab Genie Chim, Toulouse, France

[4] Univ Toulouse, CNRS, Inst Mecan Fluides Toulouse, Toulouse, France

[5] CUNY City Coll, Levich Inst & Chem Engn, New York, NY 10031 USA

[6] CNRS, Inst Lumiere Matiere, Villeurbanne, France

来源：

SCIENTIFIC REPORTS | 2018年 / 8卷

关键词：

PARTICLE CAPTURE; FLOW; TRANSITION; MECHANISM; KINETICS;

D O I：

10.1038/s41598-018-30389-7

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

Blockage of pores by particles is found in many processes, including filtration and oil extraction. We present filtration experiments through a linear array of ten channels with one dimension which is sub-micron, through which a dilute dispersion of Brownian polystyrene spheres flows under the action of a fixed pressure drop. The growth rate of a clog formed by particles at a pore entrance systematically increases with the number of already saturated (entirely clogged) pores, indicating that there is an interaction or "cross-talk" between the pores. This observation is interpreted based on a phenomenological model, stating that a diffusive redistribution of particles occurs along the membrane, from clogged to free pores. This one-dimensional model could be extended to two-dimensional membranes.

引用

页数：7

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