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Impact of organic and colloidal fouling on trace organic contaminant rejection by forward osmosis: role of initial permeate flux

Journal Article


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Abstract


  • Fouling behaviour and its impact on the rejection of trace organic contaminants (TrOCs) by forward osmosis (FO)

    were investigated.Membrane fouling was simulated using humic acid and colloidal particles asmodel foulants at

    different initial permeatewater fluxes.Water flux declinewas insignificant at an initial permeate flux of 9 L/m2h

    and the fouling layerwas loose and fluid-like. By contrast, thewater flux declinewas substantial at an initial permeate

    flux of 20 L/m2h, resulting in the formation of a compact fouling layer. Water flux recovery after physical

    cleaning for both humic acid and colloidal particle fouledmembraneswas consistently higher at an initial permeate

    flux of 9 L/m2h compared to 20 L/m2h. The results suggest that the fouling layer structure varied froma fluidlike

    loose layer at lowinitial permeate flux to amore cohesive and compact layer at high initial permeate flux.We

    surmise that the fluid-like loose layer formed at low initial permeate flux contributed to pore blockage and thus

    enhanced steric hindrance, thereby leading to an increase in TrOC rejection. By contrast, the cohesive and compact

    fouling layer formed at high initial permeate flux exacerbated cake-enhanced concentration polarisation,

    resulting in a decrease in TrOC rejection.

Authors


  •   Xie, Ming (external author)
  •   Nghiem, Long D. (external author)
  •   Price, William E.
  •   Elimelech, Menachem (external author)

Publication Date


  • 2014

Citation


  • Xie, M., Nghiem, L. D., Price, W. E. & Elimelech, M. (2014). Impact of organic and colloidal fouling on trace organic contaminant rejection by forward osmosis: role of initial permeate flux. Desalination, 336 146-152.

Scopus Eid


  • 2-s2.0-84893042644

Ro Full-text Url


  • http://ro.uow.edu.au/cgi/viewcontent.cgi?article=2986&context=eispapers

Ro Metadata Url


  • http://ro.uow.edu.au/eispapers/1977

Has Global Citation Frequency


Number Of Pages


  • 6

Start Page


  • 146

End Page


  • 152

Volume


  • 336

Place Of Publication


  • Netherlands

Abstract


  • Fouling behaviour and its impact on the rejection of trace organic contaminants (TrOCs) by forward osmosis (FO)

    were investigated.Membrane fouling was simulated using humic acid and colloidal particles asmodel foulants at

    different initial permeatewater fluxes.Water flux declinewas insignificant at an initial permeate flux of 9 L/m2h

    and the fouling layerwas loose and fluid-like. By contrast, thewater flux declinewas substantial at an initial permeate

    flux of 20 L/m2h, resulting in the formation of a compact fouling layer. Water flux recovery after physical

    cleaning for both humic acid and colloidal particle fouledmembraneswas consistently higher at an initial permeate

    flux of 9 L/m2h compared to 20 L/m2h. The results suggest that the fouling layer structure varied froma fluidlike

    loose layer at lowinitial permeate flux to amore cohesive and compact layer at high initial permeate flux.We

    surmise that the fluid-like loose layer formed at low initial permeate flux contributed to pore blockage and thus

    enhanced steric hindrance, thereby leading to an increase in TrOC rejection. By contrast, the cohesive and compact

    fouling layer formed at high initial permeate flux exacerbated cake-enhanced concentration polarisation,

    resulting in a decrease in TrOC rejection.

Authors


  •   Xie, Ming (external author)
  •   Nghiem, Long D. (external author)
  •   Price, William E.
  •   Elimelech, Menachem (external author)

Publication Date


  • 2014

Citation


  • Xie, M., Nghiem, L. D., Price, W. E. & Elimelech, M. (2014). Impact of organic and colloidal fouling on trace organic contaminant rejection by forward osmosis: role of initial permeate flux. Desalination, 336 146-152.

Scopus Eid


  • 2-s2.0-84893042644

Ro Full-text Url


  • http://ro.uow.edu.au/cgi/viewcontent.cgi?article=2986&context=eispapers

Ro Metadata Url


  • http://ro.uow.edu.au/eispapers/1977

Has Global Citation Frequency


Number Of Pages


  • 6

Start Page


  • 146

End Page


  • 152

Volume


  • 336

Place Of Publication


  • Netherlands