A concentration polarization model for the ultrafiltration of nonionic surfactants

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Abstract

A theoretical model has been developed that describes ultrafiltration of nonionic surfactants. The model takes into account the fact that surfactants start to aggregate and form micelles at the critical micelle concentration, The model can be used to predict the performance of the membrane if the transport properties inside and at the membrane surface as well as the surfactant association behavior, are known. Three hydrophilic ultrafiltration membranes, made of regenerated cellulose, were used in the investigation. The cut-offs of the membranes were 10,000, 20,000, and 30,000 Da. The surfactant used in the investigation was the nonionic surfactant Triton X-100. The influence of the concentration of surfactant, transmembrane pressure and pure water flux were studied theoretically and experimentally. From the results presented in this work it can be concluded that the calculated values are in good agreement with experimental data. (c) 2006 Elsevier Inc. All rights reserved.

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Research areas and keywords

Subject classification (UKÄ) – MANDATORY

  • Physical Chemistry
  • Chemical Engineering

Keywords

  • concentration polarization, ultrafiltration, nonionic surfactant
Original languageEnglish
Pages (from-to)191-199
JournalJournal of Colloid and Interface Science
Volume304
Issue number1
Publication statusPublished - 2006
Publication categoryResearch
Peer-reviewedYes