Principle and theoretical background of pressure-retarded osmosis process

Sarper Sarp, Daniel Johnson, Nidal Hilal, Wafa Suwaileh

Research output: Chapter in Book/Report/Conference proceedingChapter


Pressure-retarded osmosis (PRO) uses a semipermeable membrane to control the osmotic mixing to generate renewable osmotic power from a salinity gradient. The main goal of a PRO system is to economically provide an appropriate amount of green energy. Furthermore, one of the key factors for a successful PRO system is the selection of a suitable draw solution that possesses a greater osmotic pressure than that of the feed solute to drag water through the membrane. Therefore quantifying the osmotic pressure and the extractable mixing energy is required. In this chapter, we discuss the general principles of PRO, before addressing modeling of the osmotic pressure associated with the osmotic power generation.

Original languageEnglish (US)
Title of host publicationOsmosis Engineering
Number of pages16
ISBN (Electronic)9780128210161
StatePublished - Jan 1 2021


  • Osmosis engineering
  • Power generation
  • Pressure-retarded osmosis
  • Renewable energy
  • Salinity gradient

ASJC Scopus subject areas

  • General Engineering
  • General Chemical Engineering


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