Journal of Nanoparticle Research

, Volume 7, Issue 4–5, pp 525–544

Kinetics of Membrane Flux Decline: The Role of Natural Colloids and Mitigation via Membrane Surface Modification

  • James E. Kilduff
  • Supatpong Mattaraj
  • Mingyan Zhou
  • Georges Belfort
Article

Abstract

Applications of membrane technologies for potable water production have been expanding significantly, leading to increased efforts to control membrane fouling, which can significantly reduce membrane performance, increase operating costs, and shorten membrane life. Natural organic matter is ubiquitous in all water supplies and has been implicated as a major contributor to fouling during filtration of natural water. In this review, we discuss factors that influence NOM fouling, including hydrodynamics; properties of the feed constituents such as size, hydrophobicity, charge density and isoelectric point; properties of the membrane including hydrophobicity, charge density, surface roughness, and porosity; and properties of the solution phase such as pH, ionic strength and concentration of metals. We review approaches to identify and mathematically describe fouling kinetics, including effects of pore blockage, cake formation, and osmotic pressure. Finally, we discuss strategies to mitigate fouling, with a focus on strategies that involve a modification of the nanostructure of membrane surfaces, via UV-assisted graft polymerization of hydrophilic monomers to increase surface wettability and reduce interactions between NOM and the membrane surface.

Keywords

fulvic acid graft polymerization humic acid microfiltration nanofiltration NOM surface modification ultrafiltration nanoparticle water quality 

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Copyright information

© Springer 2005

Authors and Affiliations

  • James E. Kilduff
    • 1
  • Supatpong Mattaraj
    • 2
  • Mingyan Zhou
    • 1
  • Georges Belfort
    • 3
  1. 1.Department of Civil and Environmental EngineeringRensselaer Polytechnic InstituteTroyUSA
  2. 2.Faculty of Engineering, Chemical EngineeringUbon Ratchathani UniversityUbon RatchathaniThailand
  3. 3.Isermann Department of Chemical EngineeringRensselaer Polytechnic InstituteTroyUSA

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