Fresenius' Journal of Analytical Chemistry

, Volume 364, Issue 7, pp 617–624

The potential of micromixers for contacting of disperse liquid phases

  • V. Haverkamp
  • Wolfgang Ehrfeld
  • Klaus Gebauer
  • Volker Hessel
  • Holger Löwe
  • Thomas Richter
  • Christian Wille
Conference contribution

DOI: 10.1007/s002160051397

Cite this article as:
Haverkamp, V., Ehrfeld, W., Gebauer, K. et al. Fresenius J Anal Chem (1999) 364: 617. doi:10.1007/s002160051397

Abstract

The dispersion of two immiscible fluids in a static micromixer comprising interdigital channels with corrugated walls was investigated using silicon oil dispersed in dyed as well as pure water as test systems. Silicon oil and water flow rates between 20 mL/h to 500 mL/h and 150 mL/h to 700 mL/h were used, respectively. The experiments revealed the dependence of the average droplet size and size distribution on geometrical parameters of the micromixer and operating conditions. Dispersions with average droplet sizes as small as 5.6 μm and monomodal size distributions having small standard deviations of the droplet size down to 3.6 μm could be generated using the micromixer. The droplet size decreased with increasing total flow and ratio of the flow rates of the two liquids. In addition, a decrease of the droplet size was found when decreasing the channel width of the mixing device. Generally, the silicon oil – dyed water dispersion showed smaller average droplet sizes and were more stable compared to the dispersions based on silicon oil and pure water.

Copyright information

© Springer-Verlag Berlin Heidelberg 1999

Authors and Affiliations

  • V. Haverkamp
    • 1
  • Wolfgang Ehrfeld
    • 1
  • Klaus Gebauer
    • 1
  • Volker Hessel
    • 1
  • Holger Löwe
    • 1
  • Thomas Richter
    • 1
  • Christian Wille
    • 1
  1. 1.Institut für Mikrotechnik Mainz GmbH, Carl-Zeiss-Strasse 18–20, D-55129 Mainz, GermanyDE

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