A threshold flux phenomenon for colloidal fouling in reverse osmosis characterized by transmembrane pressure and electrical impedance spectroscopy

• Main Authors: Ho, Jia Shin, Sim, Lee Nuang, Gu, Jun, Webster, Richard David, Fane, Anthony Gordon, Coster, Hans G. L.
• Other Authors: School of Civil and Environmental Engineering
• Format: Article
• Language: English
• Published: 2016
• Subjects: Electrical impedance spectroscopy; Threshold flux; Diffusion polarization; Cake enhanced concentration polarization (CECP); Transmembrane pressure
• Online Access: https://hdl.handle.net/10356/82770; http://hdl.handle.net/10220/40319
• Institution: Nanyang Technological University

The dependence of membrane fouling on flux has been investigated using silica as the model foulant in a crossflow membrane module operated at constant flux. Electrical impedance spectroscopy (EIS) was used to monitor the electrical properties of the fouling process. We show that the nature of a flow...