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Effects of pore spacing on drop size during cross-flow membrane emulsification—A numerical study

Timgren, Anna LU ; Trägårdh, Gun LU and Trägårdh, Christian LU (2009) In Journal of Membrane Science 337. p.232-239
Abstract
The design and pore distribution of the membrane are important factors in cross-flow membrane emulsification. To determine the effects of hydrodynamics and drop interaction on drop size, drop formation has been studied numerically using computational fluid dynamics (CFD). Oil with a viscosity of 7.0 mPa s was used as the dispersed phase and water was used as the continuous phase. The conditions studied were pore spacing of 10, 15 and 20 times the pore diameter (20 μm) at a highly dispersed phase velocity of 0.18 m/s, and 10 times the pore diameter at a low velocity of 0.019 m/s. In the case of short pore separation and a low dispersed phase velocity, the drop formation process was uniform, resulting in an emulsion with a narrow drop size... (More)
The design and pore distribution of the membrane are important factors in cross-flow membrane emulsification. To determine the effects of hydrodynamics and drop interaction on drop size, drop formation has been studied numerically using computational fluid dynamics (CFD). Oil with a viscosity of 7.0 mPa s was used as the dispersed phase and water was used as the continuous phase. The conditions studied were pore spacing of 10, 15 and 20 times the pore diameter (20 μm) at a highly dispersed phase velocity of 0.18 m/s, and 10 times the pore diameter at a low velocity of 0.019 m/s. In the case of short pore separation and a low dispersed phase velocity, the drop formation process was uniform, resulting in an emulsion with a narrow drop size distribution, and a dispersed phase flux of 500 L/m2 h. At the higher dispersed phase velocity, the shortest pore separation gave a polydispersed emulsion, whereas pore separations of 15 and 20 times the pore diameter gave nearly monodispersed emulsions, and the flux of the dispersed phase reached 3400 L/m2 h. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
Membrane emulsification, Pressure distribution, Computational fluid dynamics (CFD), Membrane design, Drop interaction
in
Journal of Membrane Science
volume
337
pages
232 - 239
publisher
Elsevier
external identifiers
  • wos:000267025500026
  • scopus:65649096918
ISSN
0376-7388
DOI
10.1016/j.memsci.2009.03.047
language
English
LU publication?
yes
id
de10efd8-86ac-4d89-8c48-2223dea7ae1b (old id 1392942)
date added to LUP
2009-05-15 11:52:23
date last changed
2017-01-01 06:03:01
@article{de10efd8-86ac-4d89-8c48-2223dea7ae1b,
  abstract     = {The design and pore distribution of the membrane are important factors in cross-flow membrane emulsification. To determine the effects of hydrodynamics and drop interaction on drop size, drop formation has been studied numerically using computational fluid dynamics (CFD). Oil with a viscosity of 7.0 mPa s was used as the dispersed phase and water was used as the continuous phase. The conditions studied were pore spacing of 10, 15 and 20 times the pore diameter (20 μm) at a highly dispersed phase velocity of 0.18 m/s, and 10 times the pore diameter at a low velocity of 0.019 m/s. In the case of short pore separation and a low dispersed phase velocity, the drop formation process was uniform, resulting in an emulsion with a narrow drop size distribution, and a dispersed phase flux of 500 L/m2 h. At the higher dispersed phase velocity, the shortest pore separation gave a polydispersed emulsion, whereas pore separations of 15 and 20 times the pore diameter gave nearly monodispersed emulsions, and the flux of the dispersed phase reached 3400 L/m2 h.},
  author       = {Timgren, Anna and Trägårdh, Gun and Trägårdh, Christian},
  issn         = {0376-7388},
  keyword      = {Membrane emulsification,Pressure distribution,Computational fluid dynamics (CFD),Membrane design,Drop interaction},
  language     = {eng},
  pages        = {232--239},
  publisher    = {Elsevier},
  series       = {Journal of Membrane Science},
  title        = {Effects of pore spacing on drop size during cross-flow membrane emulsification—A numerical study},
  url          = {http://dx.doi.org/10.1016/j.memsci.2009.03.047},
  volume       = {337},
  year         = {2009},
}