Theory of Concentration Polarization in Crossflow Filtration

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Table of Contents

Theory of Concentration Polarization in Crossflow Filtration

Outline

Concentration Polarization

Previous Theoretical Approaches

The Osmotic Pressure Model

The Film/Gel Layer Model

The Shear Induced Diffusion Model

A Novel Theory for Cocentration Polarization

Key Steps in the Theoretical Derivation

Concentration Polarization (NF < 15)

Cake Formation (NF > 15)

Unique Features of the Theory

Effect of Applied Pressure

Effect of Particle Concentration

Effect of Membrane Resistance

Theory vs. Experiments (1)

Theory vs. Experiments (2)

Concluding Remarks		 Corresponding Author: Menachem Elimelech

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Song, L. and Elimelech M. "Theory of Concentration Polarization in Crossflow Filtration", Journal of the Chemical Society, Faraday Transactions , Volume 91, October 1995; pages 3389-3398.