DYNAMICS OF COLLOID DEPOSITION IN POROUS-MEDIA - MODELING THE ROLE OF RETAINED PARTICLES

被引：114
作者：
SONG, L [1 ]
ELIMELECH, M [1 ]
机构：
[1] UNIV CALIF LOS ANGELES, SCH ENGN & APPL SCI, DEPT CIVIL & ENVIRONM ENGN, LOS ANGELES, CA 90024 USA
来源：
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS | 1993年 / 73卷
关键词：
COLLOID CAPTURE; COLLOID DEPOSITION; EXCLUDED-AREA EFFECT; PARTICLE DEPOSITION; PARTICLE DEPOSITION DYNAMICS; POROUS MEDIA; RETAINED PARTICLES;
D O I：
10.1016/0927-7757(93)80006-Z
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
A model for the dynamics of colloid deposition in porous media is developed by combining macroscopic and microscopic theories of particle deposition. The model considers the non-uniform coverage of collector surfaces by retained particles during the deposition process. A flux-correcting function is introduced that enables the determination of the overall colloid deposition rate as a function of surface coverage. A non-linear dependence of particle deposition rate on surface coverage is obtained, in agreement with experimental data of particle deposition. It is shown that the model is successful in describing the blocking (excluded-area) effect in particle deposition dynamics.
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页码：49 / 63
页数：15
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