Analysis of RO flux decline due to membrane surface blockage

J. Borden, J. Gilron, D. Hasson

Research output: Contribution to journalArticlepeer-review

38 Scopus citations


Recent work has shown that, flux decline due to precipitation of a scaling salt such as CaSO4 on RO membranes, is governed by a surface blockage rather than a cake filtration mechanism. Crystal growth sites, scattered on the membrane, spread out laterally, increasingly blocking the membrane free flow area. Flux decline, resulting from gradual blockage of the membrane flow area, is analyzed for both laminar and turbulent flow conditions. Predicted results are shown to conform to experimental observations.

Original languageEnglish
Pages (from-to)257-269
Number of pages13
Issue numberC
StatePublished - 1 Jan 1987
Externally publishedYes

ASJC Scopus subject areas

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


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