Advanced search
2 files | 1.14 MB

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)
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

Downloads

  • (...).pdf
    • full text
    • |
    • UGent only
    • |
    • PDF
    • |
    • 838.77 KB
  • (...).pdf
    • full text
    • |
    • UGent only
    • |
    • PDF
    • |
    • 303.11 KB

Citation

Please use this url to cite or link to this publication:

Chicago
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.
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.
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.
MLA
D’Haese, Arnout, Ilse De Leersnyder, Pieter Vermeir, et al. “On Negative Rejection of Uncharged Organic Solutes in Forward Osmosis.” JOURNAL OF MEMBRANE SCIENCE 548 (2018): 22–31. Print.
@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},
  keyword      = {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://dx.doi.org/10.1016/j.memsci.2017.11.002},
  volume       = {548},
  year         = {2018},
}

Altmetric
View in Altmetric
Web of Science
Times cited: