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Membrane emulsification with oscillating and stationary membranes
journal contribution
posted on 2010-04-29, 15:27 authored by Richard Holdich, Marijana DragosavacMarijana Dragosavac, Goran VladisavljevicGoran Vladisavljevic, S.R. KosvintsevMembrane emulsification of sunflower oil in aqueous solutions of 2% (vol/vol)
Tween 20 was performed using a stationary disk membrane with a rotating paddle
stirrer and, for comparison, a tubular membrane oscillating normal to the direction of
oil flow in an otherwise stationary continuous phase. The oscillation frequency ranged
from 10 to 90 Hz. The oil was injected through a sieve-type membrane with a 10 μm
pore size and 180 μm between pore spacing at low flux rates to minimise any droplet
interference. Using the same membrane material under identical peak shear conditions
in both systems, smaller and more uniform drops (30 to 50 μm median sizes) were
produced in the oscillating system. In oscillation, the drop size was modelled by a
force balance, including a correction for neck formation at the pore surface, but in the
rotating paddle system neck formation did not appear to be relevant. Drop size was
not found to be frequency of oscillation dependent, apart from its influence on the
shear stress at the membrane surface.
History
School
- Aeronautical, Automotive, Chemical and Materials Engineering
Department
- Chemical Engineering
Citation
HOLDICH, R.G....et al., 2010. Membrane emulsification with oscillating and stationary membranes. Industrial & Engineering Chemistry Research, 49(8), pp. 3810-3817Publisher
© American Chemical SocietyVersion
- NA (Not Applicable or Unknown)
Publication date
2010Notes
This article is closed access. It was published in the journal, Industrial and Engineering Chemistry Research [© ACS Publications]: http://pubs.acs.org/page/iecred/about.htmlISSN
0888-5885;1520-5045Language
- en