Emulsification in novel ultrasonic cavitation intensifying bag reactors

Ralph van Zwieten, Bram Verhaagen, Karin Schroen, David Fernandez Rivas

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13 Citations (Scopus)
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Abstract

Cavitation Intensifying Bags (CIBs), a novel reactor type for use with ultrasound, have been recently proposed as a scaled-up microreactor with increased energy efficiencies. We now report on the use of the CIBs for the preparation of emulsions out of hexadecane and an SDS aqueous solution. The CIBs have been designed in such a way that cavitation effects created by the ultrasound are increased. It was found that the CIBs were 60 times more effective in breaking up droplets than conventional bags, therewith showing a proof of principle for the CIBs for the preparation of emulsions. Droplets of 0.2 μm could easily be obtained. To our knowledge, no other technology results in the same droplet size more easily in terms of energy usage. Without depending on the wettability changes of the membrane, the CIBs score similarly as membrane emulsification, which is the most energy friendly emulsification method known in literature. Out of the frequencies used, 37 kHz was found to require the lowest treatment time. The treatment time decreased at higher temperatures. While the energy usage in the current non-optimised experiments was on the order of View the MathML source107-109J/m3, which is comparable to that of a high-pressure homogenizer, we expect that the use of CIBs for the preparation of fine emulsions can still be improved considerably. The process presented can be applied for other uses such as water treatment, synthesis of nanomaterials and food processing.
Original languageEnglish
Pages (from-to)446-453
JournalUltrasonics sonochemistry
Volume36
DOIs
Publication statusPublished - 2017

Fingerprint

Emulsification
cavitation
bags
cavitation flow
Emulsions
Cavitation
Ultrasonics
ultrasonics
reactors
Wettability
Food Handling
Membranes
Nanostructures
emulsion
Water Purification
droplet
emulsions
preparation
Technology
Pressure

Keywords

  • IR-102665
  • METIS-319761

Cite this

van Zwieten, Ralph ; Verhaagen, Bram ; Schroen, Karin ; Fernandez Rivas, David . / Emulsification in novel ultrasonic cavitation intensifying bag reactors. In: Ultrasonics sonochemistry. 2017 ; Vol. 36. pp. 446-453.
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Emulsification in novel ultrasonic cavitation intensifying bag reactors. / van Zwieten, Ralph; Verhaagen, Bram; Schroen, Karin; Fernandez Rivas, David .

In: Ultrasonics sonochemistry, Vol. 36, 2017, p. 446-453.

Research output: Contribution to journalArticleAcademicpeer-review

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