Ethylene glycol as bore fluid for hollow fiber membrane preparation

Handle URI:
http://hdl.handle.net/10754/623831
Title:
Ethylene glycol as bore fluid for hollow fiber membrane preparation
Authors:
Le, Ngoc Lieu ( 0000-0002-4634-7267 ) ; Nunes, Suzana Pereira ( 0000-0002-3669-138X )
Abstract:
We proposed the use of ethylene glycol and its mixture with water as bore fluid for the preparation of poly(ether imide) (PEI) hollow fiber membranes and compared their performance and morphology with membranes obtained with conventional coagulants (water and its mixture with the solvent N-methylpyrrolidone (NMP)). Thermodynamics and kinetics of the systems were investigated. Water and 1:1 water:EG mixtures lead to fast precipitation rates. Slow precipitation is observed for both pure EG and 9:1 NMP:water mixture, but the reasons for that are different. While low osmotic driving force leads to slow NMP and water transport when NMP:water is used, the high EG viscosity is the reason for the slow phase separation when EG is the bore fluid. The NMP:water mixture produces fibers with mixed sponge-like and finger-like structure with large pores in the inner and outer layers; and hence leading to a high water permeance and a high MWCO suitable for separation of large-sized proteins. As compared to NMP:water, using EG as bore fluid provides fibers with a finger-like bilayered structure and sponge-like layers near the surfaces, and hence contributing to the higher water permeance. It also induces small pores for better protein rejection.
KAUST Department:
Biological and Environmental Sciences and Engineering (BESE) Division
Citation:
Le NL, Nunes SP (2017) Ethylene glycol as bore fluid for hollow fiber membrane preparation. Journal of Membrane Science 533: 171–178. Available: http://dx.doi.org/10.1016/j.memsci.2017.03.045.
Publisher:
Elsevier BV
Journal:
Journal of Membrane Science
Issue Date:
31-Mar-2017
DOI:
10.1016/j.memsci.2017.03.045
Type:
Article
ISSN:
0376-7388
Sponsors:
The work was supported by King Abdullah University of Science and Technology (KAUST).
Additional Links:
http://www.sciencedirect.com/science/article/pii/S0376738817304520
Appears in Collections:
Articles; Biological and Environmental Sciences and Engineering (BESE) Division

Full metadata record

DC FieldValue Language
dc.contributor.authorLe, Ngoc Lieuen
dc.contributor.authorNunes, Suzana Pereiraen
dc.date.accessioned2017-05-31T11:23:08Z-
dc.date.available2017-05-31T11:23:08Z-
dc.date.issued2017-03-31en
dc.identifier.citationLe NL, Nunes SP (2017) Ethylene glycol as bore fluid for hollow fiber membrane preparation. Journal of Membrane Science 533: 171–178. Available: http://dx.doi.org/10.1016/j.memsci.2017.03.045.en
dc.identifier.issn0376-7388en
dc.identifier.doi10.1016/j.memsci.2017.03.045en
dc.identifier.urihttp://hdl.handle.net/10754/623831-
dc.description.abstractWe proposed the use of ethylene glycol and its mixture with water as bore fluid for the preparation of poly(ether imide) (PEI) hollow fiber membranes and compared their performance and morphology with membranes obtained with conventional coagulants (water and its mixture with the solvent N-methylpyrrolidone (NMP)). Thermodynamics and kinetics of the systems were investigated. Water and 1:1 water:EG mixtures lead to fast precipitation rates. Slow precipitation is observed for both pure EG and 9:1 NMP:water mixture, but the reasons for that are different. While low osmotic driving force leads to slow NMP and water transport when NMP:water is used, the high EG viscosity is the reason for the slow phase separation when EG is the bore fluid. The NMP:water mixture produces fibers with mixed sponge-like and finger-like structure with large pores in the inner and outer layers; and hence leading to a high water permeance and a high MWCO suitable for separation of large-sized proteins. As compared to NMP:water, using EG as bore fluid provides fibers with a finger-like bilayered structure and sponge-like layers near the surfaces, and hence contributing to the higher water permeance. It also induces small pores for better protein rejection.en
dc.description.sponsorshipThe work was supported by King Abdullah University of Science and Technology (KAUST).en
dc.publisherElsevier BVen
dc.relation.urlhttp://www.sciencedirect.com/science/article/pii/S0376738817304520en
dc.rightsNOTICE: this is the author’s version of a work that was accepted for publication in Journal of Membrane Science. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in Journal of Membrane Science, [, , (2017-03-31)] DOI: 10.1016/j.memsci.2017.03.045 . © 2017. This manuscript version is made available under the CC-BY-NC-ND 4.0 license http://creativecommons.org/licenses/by-nc-nd/4.0/en
dc.subjecthollow fiberen
dc.subjectbore fluiden
dc.subjectethylene glycolen
dc.subjectprecipitation rateen
dc.subjectkineticsen
dc.titleEthylene glycol as bore fluid for hollow fiber membrane preparationen
dc.typeArticleen
dc.contributor.departmentBiological and Environmental Sciences and Engineering (BESE) Divisionen
dc.identifier.journalJournal of Membrane Scienceen
dc.eprint.versionPost-printen
kaust.authorLe, Ngoc Lieuen
kaust.authorNunes, Suzana Pereiraen
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