Dynamics of colloid deposition in porous media: Modeling the role of retained particles

Lianfa Song, Menachem Elimelech

Research output: Contribution to journalArticle

126 Scopus citations

Abstract

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.

Original languageEnglish
Pages (from-to)49-63
Number of pages15
JournalColloids and Surfaces A: Physicochemical and Engineering Aspects
Volume73
Issue numberC
DOIs
StatePublished - Jun 29 1993

Keywords

  • Colloid capture
  • colloid deposition
  • excluded-area effect
  • particle deposition
  • particle deposition dynamics
  • porous media
  • retained particles.

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