Characterization of membrane biofouling at different operating conditions (flux) in drinking water treatment using confocal laser scanning microscopy (CLSM) and image analysis

Cheng Sun*, Liv Fiksdal, Audun Hanssen-Bauer, Morten B. Rye, TorOve Leiknes

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

37 Scopus citations

Abstract

Confocal laser scanning microscopy (CLSM) and image analysis (IA) were applied to characterize and quantify biofouling of hollow fiber ultrafiltration membranes in the OBM (ozonation, biofiltration and membrane filtration) process for drinking water treatment. Membrane fibers in a test unit were collected for analysis of the biofouling at different fluxes (i.e. 50, 60 and 70Lm-2h-1) based on structural parameters (i.e. porosity, bio-volume, thickness) and components (i.e. cells, polysaccharide, protein). The calculated porosity of the biofouling could be correlated to the membrane permeability. Although the biomass volume of polysaccharide was generally less than for protein at low flux (i.e. 50Lm-2h-1), carbohydrate biomass volume showed a better correlation to membrane permeability.

Original languageEnglish (US)
Pages (from-to)194-201
Number of pages8
JournalJournal of Membrane Science
Volume382
Issue number1-2
DOIs
StatePublished - Oct 15 2011

Keywords

  • Biofouling
  • CLSM
  • Drinking water
  • Membrane
  • OBM

ASJC Scopus subject areas

  • Biochemistry
  • Materials Science(all)
  • Physical and Theoretical Chemistry
  • Filtration and Separation

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