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Validating the rejection of trace organic chemicals by reverse osmosis membranes using a pilot-scale system

Journal Article


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Abstract


  • A protocol to validate the rejection of organic chemicals of potential health risk by low pressure reverse osmosis

    (LPRO) membranes was developed for decision making support regarding the monitoring level required for potable

    water reuse. Ten organic chemicals were selected for evaluation, based on their recorded usage, the scarcity

    of rejection data, and difficulty in analytical determination at concentrations relevant to their potential impact on

    human-health. An analytical method was developed for these organic chemicals. The target rejections of 90 and

    99% for neutral and charged chemicals respectively were successfully achieved under the standard operating

    condition with only two exceptions (i.e. bisoprolol and carazolol rejections by the TFC-HR membrane). These

    lower rejections by the TFC-HR can be attributed to its highestwater permeability amongst the three membranes

    while both bisoprolol and carazolol are positively charged. Changes in operating conditions including permeate

    flux, feed temperature and chemical cleaning can exert a considerable impact on conductivity rejection by the

    three LPRO membranes investigated here. Feed temperature showed an apparent impact on the rejection of

    the selected organic chemicals. However, their rejections were still higher than the target validation values.

    The protocol developed here can be expanded for the validation of other organic chemicals.

Authors


  •   Fujioka, Takahiro (external author)
  •   Khan, Stuart J. (external author)
  •   McDonald, James A. (external author)
  •   Nghiem, Long D.

Publication Date


  • 2015

Citation


  • Fujioka, T., Khan, S. J., McDonald, J. A. & Nghiem, L. D. (2015). Validating the rejection of trace organic chemicals by reverse osmosis membranes using a pilot-scale system. Desalination, 358 18-26.

Scopus Eid


  • 2-s2.0-84949122704

Ro Full-text Url


  • http://ro.uow.edu.au/cgi/viewcontent.cgi?article=4375&context=eispapers

Ro Metadata Url


  • http://ro.uow.edu.au/eispapers/3359

Number Of Pages


  • 8

Start Page


  • 18

End Page


  • 26

Volume


  • 358

Abstract


  • A protocol to validate the rejection of organic chemicals of potential health risk by low pressure reverse osmosis

    (LPRO) membranes was developed for decision making support regarding the monitoring level required for potable

    water reuse. Ten organic chemicals were selected for evaluation, based on their recorded usage, the scarcity

    of rejection data, and difficulty in analytical determination at concentrations relevant to their potential impact on

    human-health. An analytical method was developed for these organic chemicals. The target rejections of 90 and

    99% for neutral and charged chemicals respectively were successfully achieved under the standard operating

    condition with only two exceptions (i.e. bisoprolol and carazolol rejections by the TFC-HR membrane). These

    lower rejections by the TFC-HR can be attributed to its highestwater permeability amongst the three membranes

    while both bisoprolol and carazolol are positively charged. Changes in operating conditions including permeate

    flux, feed temperature and chemical cleaning can exert a considerable impact on conductivity rejection by the

    three LPRO membranes investigated here. Feed temperature showed an apparent impact on the rejection of

    the selected organic chemicals. However, their rejections were still higher than the target validation values.

    The protocol developed here can be expanded for the validation of other organic chemicals.

Authors


  •   Fujioka, Takahiro (external author)
  •   Khan, Stuart J. (external author)
  •   McDonald, James A. (external author)
  •   Nghiem, Long D.

Publication Date


  • 2015

Citation


  • Fujioka, T., Khan, S. J., McDonald, J. A. & Nghiem, L. D. (2015). Validating the rejection of trace organic chemicals by reverse osmosis membranes using a pilot-scale system. Desalination, 358 18-26.

Scopus Eid


  • 2-s2.0-84949122704

Ro Full-text Url


  • http://ro.uow.edu.au/cgi/viewcontent.cgi?article=4375&context=eispapers

Ro Metadata Url


  • http://ro.uow.edu.au/eispapers/3359

Number Of Pages


  • 8

Start Page


  • 18

End Page


  • 26

Volume


  • 358