Text.pdf (270.14 kB)
0/0

Preparation of emulsions with a narrow particle size distribution using microporous α-alumina membranes

Download (270.14 kB)
journal contribution
posted on 05.10.2012 by Goran Vladisavljevic, Helmar Schubert
O/W emulsions with the smallest spans of particle size distribution (PSD) [span = (d 90 − d 10)/d 50] reported until now for ceramic α‐alumina membranes (0.42–0.56) were prepared using a 1.4‐µm membrane cleaned thoroughly after use in an ultrasonic bath. The smallest span values of 0.42–0.48 were achieved at transmembrane pressures 2.6–3.5 times greater than the capillary pressure. A narrow particle size distribution with a span of 0.48–0.49 was obtained at a wall shear stress of 0.55 Pa, provided that the dispersed phase flux was not above 4.6 L m2 h−1. The span and mean droplet size were remarkably constant over the 1–10 vol.% range of dispersed phase content. Membrane cleaning by ultrasonication was one of the critical conditions for successful operation. If the membrane was cleaned only by the cleaning in place (CIP) method, emulsions with a span value in the range of 0.7–1.4 were obtained.

History

School

  • Aeronautical, Automotive, Chemical and Materials Engineering

Department

  • Chemical Engineering

Citation

VLADISAVLJEVIC, G.T. and SCHUBERT, H., 2003. Preparation of emulsions with a narrow particle size distribution using microporous α-alumina membranes. Journal of Dispersion Science and Technology, 24 (6), pp. 811 - 819

Publisher

© Taylor and Francis

Version

AM (Accepted Manuscript)

Publication date

2003

Notes

This article was published in the Journal of Membrane Science [© Elsevier] and the definitive version is available at: http://dx.doi.org/10.1081/DIS-120025549

ISSN

0193-2691

Language

en

Exports

Logo branding

Exports