Removal of different fractions of NOM foulants during demineralized water backwashing

Sheng Li, Sebastiaan G J Heijman, J. Q J C Verberk, Arne R. D. Verliefde, Gary L. Amy, Johannis C. Van Dijk

Research output: Contribution to journalArticlepeer-review

12 Scopus citations


The effectiveness of demineralized water backwashing on fouling by different fractions of NOM was investigated in this study. Two types of natural surface water (Schie canal and Biesbosch reservoir) were tested to confirm the improvement of demineralized water backwashing on fouling control, and LC-OCD analysis was conducted on Schie canal water to find out which fraction of NOM was removed with those backwashes. Results derived from natural waters showed that demineralized water backwashing substantially improved UF fouling control. LC-OCD analyses showed both UF permeate and demineralized water backwashes were effective on removing part of biopolymers, but demineralized water is also effective for humic substances and a limited amount of low molecular weight substances. However, based on the LC-OCD results, even demineralized water backwashing is not effective to remove all humic substances and biopolymers rejected on the UF membranes. © 2012 Elsevier B.V. All rights reserved.
Original languageEnglish (US)
Pages (from-to)186-192
Number of pages7
JournalSeparation and Purification Technology
StatePublished - Sep 2012

Bibliographical note

KAUST Repository Item: Exported on 2020-10-01
Acknowledgements: This research was funded by Senter Novem in the framework of the Innowator grants. Norit X-Flow B.V., the membrane manufacturer, the Netherlands, is gratefully acknowledged for providing UFC M5 0.8 membrane fibers.

ASJC Scopus subject areas

  • Filtration and Separation
  • Analytical Chemistry


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