Osmotic's potential

An overview of draw solutes for forward osmosis

Daniel James Johnson, Wafa Ali Suwaileh, Abdul Wahab Mohammed, Nidal Hilal

    Research output: Contribution to journalReview article

    Abstract

    Forward osmosis (FO) is a membrane separation process using a highly concentrated draw solution with high osmotic potential to draw water across a semi-permeable membrane from a feed source. This feed source may be seawater, wastewater or other natural or contaminated water sources. Unlike other membrane driven purification processes, the product is not clean water, but a diluted draw solution. As a result a second step is often needed to produce a pure water product. A major advantage of FO is that the low hydrodynamic pressure involved leads to lowered fouling of membranes and greater flux recovery after cleaning, as well as often providing a low energy process which can recover clean water from difficult or highly fouling sources. Selection of an appropriate and effective draw solution is essential for the practical operation of an FO process. This review will give an overview of the theoretical underpinnings of draw solution performance and a comprehensive summary of the current literature regarding the different types of draw solutions which have been investigated and their respective benefits and detriments.

    Original languageEnglish (US)
    Pages (from-to)100-120
    Number of pages21
    JournalDesalination
    Volume434
    DOIs
    StatePublished - May 15 2018

    Fingerprint

    Osmosis
    osmosis
    solute
    Water
    membrane
    Membranes
    Fouling
    fouling
    water
    Seawater
    Purification
    purification
    Cleaning
    Wastewater
    Hydrodynamics
    hydrodynamics
    Fluxes
    seawater
    wastewater
    Recovery

    Keywords

    • Desalination
    • Draw solution
    • Forward osmosis
    • Membrane separation
    • Water treatment

    ASJC Scopus subject areas

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

    Cite this

    Johnson, D. J., Suwaileh, W. A., Mohammed, A. W., & Hilal, N. (2018). Osmotic's potential: An overview of draw solutes for forward osmosis. Desalination, 434, 100-120. https://doi.org/10.1016/j.desal.2017.09.017

    Osmotic's potential : An overview of draw solutes for forward osmosis. / Johnson, Daniel James; Suwaileh, Wafa Ali; Mohammed, Abdul Wahab; Hilal, Nidal.

    In: Desalination, Vol. 434, 15.05.2018, p. 100-120.

    Research output: Contribution to journalReview article

    Johnson, DJ, Suwaileh, WA, Mohammed, AW & Hilal, N 2018, 'Osmotic's potential: An overview of draw solutes for forward osmosis', Desalination, vol. 434, pp. 100-120. https://doi.org/10.1016/j.desal.2017.09.017
    Johnson, Daniel James ; Suwaileh, Wafa Ali ; Mohammed, Abdul Wahab ; Hilal, Nidal. / Osmotic's potential : An overview of draw solutes for forward osmosis. In: Desalination. 2018 ; Vol. 434. pp. 100-120.
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