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On negative rejection of uncharged organic solutes in forward osmosis

Arnout D'Haese (UGent) , Ilse De Leersnyder (UGent) , Pieter Vermeir (UGent) and Arne Verliefde (UGent)
(2018) JOURNAL OF MEMBRANE SCIENCE. 548. p.22-31
Author
Organization
Abstract
Negative rejection of 7 alcohols in Forward Osmosis (FO) is reported. The alcohols used in this study are uncharged, hydrophilic organic solutes. It is shown that current membrane transport models are not capable of reproducing the rejection pattern presented here, and consequently, a new model is developed. The model relies on adsorption of the solutes to the membrane followed by coupled transport. Adsorption is caused by salting out of the solutes, while coupled transport is caused by their small size and hydrophilicity, yielding comparatively strong water-solute interactions. It is calculated that the solutes are enriched 4–5 times in the membrane compared to the feed solution. Coupled transport is also demonstrated using the same membrane and solutes in RO mode. The novel model yields an excellent fit, and model parameters are discussed.
Keywords
Forward osmosis, Negative rejection, Organic solutes, Transport modeling, CELLULOSE-ACETATE MEMBRANES, POLYAMIDE COMPOSITE MEMBRANES, REVERSE-OSMOSIS, MASS-TRANSFER, SALTING-OUT, NANOFILTRATION MEMBRANES, HINDRANCE FACTORS, DIFFUSION, TRANSPORT, COEFFICIENTS

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MLA
D’Haese, Arnout, et al. “On Negative Rejection of Uncharged Organic Solutes in Forward Osmosis.” JOURNAL OF MEMBRANE SCIENCE, vol. 548, 2018, pp. 22–31, doi:10.1016/j.memsci.2017.11.002.
APA
D’Haese, A., De Leersnyder, I., Vermeir, P., & Verliefde, A. (2018). On negative rejection of uncharged organic solutes in forward osmosis. JOURNAL OF MEMBRANE SCIENCE, 548, 22–31. https://doi.org/10.1016/j.memsci.2017.11.002
Chicago author-date
D’Haese, Arnout, Ilse De Leersnyder, Pieter Vermeir, and Arne Verliefde. 2018. “On Negative Rejection of Uncharged Organic Solutes in Forward Osmosis.” JOURNAL OF MEMBRANE SCIENCE 548: 22–31. https://doi.org/10.1016/j.memsci.2017.11.002.
Chicago author-date (all authors)
D’Haese, Arnout, Ilse De Leersnyder, Pieter Vermeir, and Arne Verliefde. 2018. “On Negative Rejection of Uncharged Organic Solutes in Forward Osmosis.” JOURNAL OF MEMBRANE SCIENCE 548: 22–31. doi:10.1016/j.memsci.2017.11.002.
Vancouver
1.
D’Haese A, De Leersnyder I, Vermeir P, Verliefde A. On negative rejection of uncharged organic solutes in forward osmosis. JOURNAL OF MEMBRANE SCIENCE. 2018;548:22–31.
IEEE
[1]
A. D’Haese, I. De Leersnyder, P. Vermeir, and A. Verliefde, “On negative rejection of uncharged organic solutes in forward osmosis,” JOURNAL OF MEMBRANE SCIENCE, vol. 548, pp. 22–31, 2018.
@article{8539134,
  abstract     = {{Negative rejection of 7 alcohols in Forward Osmosis (FO) is reported. The alcohols used in this study are uncharged, hydrophilic organic solutes. It is shown that current membrane transport models are not capable of reproducing the rejection pattern presented here, and consequently, a new model is developed. The model relies on adsorption of the solutes to the membrane followed by coupled transport. Adsorption is caused by salting out of the solutes, while coupled transport is caused by their small size and hydrophilicity, yielding comparatively strong water-solute interactions. It is calculated that the solutes are enriched 4–5 times in the membrane compared to the feed solution. Coupled transport is also demonstrated using the same membrane and solutes in RO mode. The novel model yields an excellent fit, and model parameters are discussed.}},
  author       = {{D'Haese, Arnout and De Leersnyder, Ilse and Vermeir, Pieter and Verliefde, Arne}},
  issn         = {{0376-7388}},
  journal      = {{JOURNAL OF MEMBRANE SCIENCE}},
  keywords     = {{Forward osmosis,Negative rejection,Organic solutes,Transport modeling,CELLULOSE-ACETATE MEMBRANES,POLYAMIDE COMPOSITE MEMBRANES,REVERSE-OSMOSIS,MASS-TRANSFER,SALTING-OUT,NANOFILTRATION MEMBRANES,HINDRANCE FACTORS,DIFFUSION,TRANSPORT,COEFFICIENTS}},
  language     = {{eng}},
  pages        = {{22--31}},
  title        = {{On negative rejection of uncharged organic solutes in forward osmosis}},
  url          = {{http://doi.org/10.1016/j.memsci.2017.11.002}},
  volume       = {{548}},
  year         = {{2018}},
}
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