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The effects of feed solution temperature on pore size and trace organic contaminant rejection by the nanofiltration membrane NF270

Journal Article


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Abstract


  • This study investigated the effect of feed temperature on membrane pore size and the rejection of trace

    organic contaminants (TrOCs) by the nanofiltration (NF) membrane NF270. Filtration experiments were

    conducted using a cross flow membrane system at 20, 30 and 40 C. The membrane pore radius was estimated

    using the pore hindrance transport model at each temperature and the rejection data of three reference

    organic solutes (i.e. erythritol, xylose and glucose) experimentally obtained in this study. The

    results suggest that the pore size of an NF membrane is dependent on the feed solution temperature.

    An increase in the feed temperature from 20 to 40 C led to an increase in the effective pore radius from

    0.39 to 0.44 nm. Consequently, the increase in the feed temperature also caused a considerable drop in

    the rejection of all TrOCs investigated in this study. The decrease in rejection observed here could be

    attributed to not only the increase in the solute diffusivity but also the enlargement of the membrane

    pore size. As the feed temperature increased, the decrease in rejection of neutral TrOCs was more severe

    than that of negatively charged compounds. This is because in addition to size exclusion (or steric hindrance)

    the rejection of negatively charged TrOCs is also governed by electrostatic interaction given that

    the membrane surface is also negatively charged.

Authors


  •   Dang, Hai Q. (external author)
  •   Price, William E.
  •   Nghiem, Long D. (external author)

Publication Date


  • 2014

Citation


  • Dang, H. Quang., Price, W. E. & Nghiem, L. Duc. (2014). The effects of feed solution temperature on pore size and trace organic contaminant rejection by the nanofiltration membrane NF270. Separation and Purification Technology, 125 (April), 43-51.

Scopus Eid


  • 2-s2.0-84894063255

Ro Full-text Url


  • http://ro.uow.edu.au/cgi/viewcontent.cgi?article=3016&context=eispapers

Ro Metadata Url


  • http://ro.uow.edu.au/eispapers/2007

Has Global Citation Frequency


Number Of Pages


  • 8

Start Page


  • 43

End Page


  • 51

Volume


  • 125

Issue


  • April

Place Of Publication


  • United Kingdom

Abstract


  • This study investigated the effect of feed temperature on membrane pore size and the rejection of trace

    organic contaminants (TrOCs) by the nanofiltration (NF) membrane NF270. Filtration experiments were

    conducted using a cross flow membrane system at 20, 30 and 40 C. The membrane pore radius was estimated

    using the pore hindrance transport model at each temperature and the rejection data of three reference

    organic solutes (i.e. erythritol, xylose and glucose) experimentally obtained in this study. The

    results suggest that the pore size of an NF membrane is dependent on the feed solution temperature.

    An increase in the feed temperature from 20 to 40 C led to an increase in the effective pore radius from

    0.39 to 0.44 nm. Consequently, the increase in the feed temperature also caused a considerable drop in

    the rejection of all TrOCs investigated in this study. The decrease in rejection observed here could be

    attributed to not only the increase in the solute diffusivity but also the enlargement of the membrane

    pore size. As the feed temperature increased, the decrease in rejection of neutral TrOCs was more severe

    than that of negatively charged compounds. This is because in addition to size exclusion (or steric hindrance)

    the rejection of negatively charged TrOCs is also governed by electrostatic interaction given that

    the membrane surface is also negatively charged.

Authors


  •   Dang, Hai Q. (external author)
  •   Price, William E.
  •   Nghiem, Long D. (external author)

Publication Date


  • 2014

Citation


  • Dang, H. Quang., Price, W. E. & Nghiem, L. Duc. (2014). The effects of feed solution temperature on pore size and trace organic contaminant rejection by the nanofiltration membrane NF270. Separation and Purification Technology, 125 (April), 43-51.

Scopus Eid


  • 2-s2.0-84894063255

Ro Full-text Url


  • http://ro.uow.edu.au/cgi/viewcontent.cgi?article=3016&context=eispapers

Ro Metadata Url


  • http://ro.uow.edu.au/eispapers/2007

Has Global Citation Frequency


Number Of Pages


  • 8

Start Page


  • 43

End Page


  • 51

Volume


  • 125

Issue


  • April

Place Of Publication


  • United Kingdom