Coupling between Chemical and Physical Interactions in NOM Fouling of NF Membranes: Implications for Fouling Control

7/13/01


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Table of Contents

Coupling between Chemical and Physical Interactions in NOM Fouling of NF Membranes: Implications for Fouling Control

Outline

Motivation

Overview of NOM Fouling

Objective

Model NOM and NF Membrane

Characterization of NOM and NF Membrane

NF Membrane Surface Morphology (via AFM)

NF Test Unit

Calcium Complexation with NOM

Effect of Initial Permeate Flux (low crossflow rate, UXF)

Effect of Initial Permeate Flux (high crossflow rate, UXF)

Effect of Crossflow Velocity

Effect of Divalent Cations (Calcium)

Combined (Coupled) Influence of Hydrodynamics and Chemistry

Coupled Influence of Hydrodynamics and Chemistry

NOM Fouling Layer Weight

Power (Energy) Requirement and Fouling

Optimization of Operational Parameters (J0 and UXF)

Concluding Remarks

Acknowledgements

Author: Menachem Elimelech

Email: menachem.elimelech@yale.edu

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