Fouling in a high pressure, high recovery rotating reverse osmosis system

Cynthia L. Pederson, Richard M. Lueptow*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

1 Scopus citations

Abstract

Concentration polarization and membrane fouling have limited the efficiency of reverse osmosis. Rotating filtration may minimize the effects of concentration polarization and membrane fouling by increasing the shear at the membrane surface. A second-generation high-pressure rotating reverse osmosis device was designed to perform long-term tests of the purification of a complex wastewater ersatz based on what is expected to be produced on a long-term space mission. A significant amount of fouling occurred after three days of operation during the tests. The fouling potential was used to characterize this fouling and was incorporated into a theoretical model of rotating reverse osmosis. The effect of cleaning cycles and a biocide on the reduction of flux due to fouling was investigated. Cleaning cycles every 48 h significantly improved the flux of the device. The addition of a biocide reduced the fouling including the sharp decrease in flux at day three, which can therefore be attributed to biofouling of the membrane surface.

Original languageEnglish (US)
Pages (from-to)1-14
Number of pages14
JournalDesalination
Volume212
Issue number1-3
DOIs
StatePublished - Jun 25 2007

Keywords

  • Biofouling
  • Fouling potential
  • Reverse osmosis
  • Rotating filtration
  • Wastewater reclamation

ASJC Scopus subject areas

  • Chemistry(all)
  • Chemical Engineering(all)
  • Materials Science(all)
  • Water Science and Technology
  • Mechanical Engineering

Fingerprint Dive into the research topics of 'Fouling in a high pressure, high recovery rotating reverse osmosis system'. Together they form a unique fingerprint.

Cite this