Preferential fouling of natural organic matter (NOM) fractions in submerged low-pressure membrane filtration

Gema Sakti Raspati*, Hanne Næss Høvik, TorOve Leiknes

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

Abstract

The interactions between membrane fouling and natural organic matter (NOM) properties were investigated in a series of filtration experiments of raw and flotated water in a submerged low-pressure membrane system of hydrophobic and hydrophilic membranes. Norwegian surface water NOM was characterized by its electrostatic properties i.e., surface charge, charge density, and was fractionated with respect to its hydrophobic/hydrophilic characteristics. Hydrophobic/hydrophilic interaction was a more dominant mechanism compared to charge repulsion in membrane fouling as shown from the preferential adsorption of hydrophobic fraction with the highest charge density onto hydrophilic and hydrophobic membranes, and positively charged hydrophilic fraction onto hydrophilic membrane.

Original languageEnglish (US)
Pages (from-to)416-422
Number of pages7
JournalDesalination and Water Treatment
Volume34
Issue number1-3
DOIs
StatePublished - Jan 1 2011

Keywords

  • Charge repulsion
  • Hydrophobic/hydrophilic interaction
  • Membrane fouling
  • Natural organic matter
  • Submerge low-pressure membrane

ASJC Scopus subject areas

  • Water Science and Technology
  • Ocean Engineering
  • Pollution

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