The use of conventional water and wastewater treatment processes becomes increasingly challenged with the identification of more and more contaminants, rapid growth of population and industrial act...

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Advanced technologies in water and wastewater treatment

Cross-flow filtration with microporous membranes is increasingly used in the separation and concentration of particulate suspensions. Existing models for the filtrate flux are inadequate for correlating experimental observations and are based on contradictory physical mechanisms. We propose that the flux is limited by the formation of a dynamic concentration polarization boundary layer consisting of a high concentration of retained particles. A simple model is developed incorporating a shear-enhanced diffusivity of the large particles which arises from mutually induced velocity fields in the shear flow of the concentrated suspension. Predictions of the model agree well with experimental data for a variety of particulate suspensions. The model provides both a fundamental understanding of the physical phenomena governing flux and a rational basis for design of improved cross-flow filters.

A concentration polarization model for the filtrate flux in cross-flow microfiltration of particulate suspensions

Spiral wound modules and spacers - Review and analysis

A critical review of fouling of reverse osmosis membranes

https://ris.utwente.nl/ws/files/6468160/Li92optimization.pdf

Joseph J. S. Shen

Papers

On the Prediction of Limiting Flux in Laminar Ultrafiltration of Macromolecular Solutions

Turbulence Promotion and Hydrodynamic Optimization in an Ultrafiltration Process