Osmotic backwash process in RO membranes

Neta Avraham, Carlos Dosoretz, Raphael Semiat*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

31 Scopus citations


The backflow process in reverse osmosis membranes induced by the osmotic pressure of a salt feed solution was investigated. The work was performed on an improved RO system based on 2.5" spiral wound module. The results showed influence of the salt concentration in, translated as osmotic pressure driving force. An important phenomena observed was that the flux through the membrane tends to decrease with the increase of salt concentration, probably due to secondary concentration polarization effects in the permeate side.

Original languageEnglish
Pages (from-to)387-389
Number of pages3
Issue number1-3
StatePublished - 20 Nov 2006
Externally publishedYes

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