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Use of velocity of ultrasound to monitor gravitational separation in dispersions



Use of velocity of ultrasound to monitor gravitational separation in dispersions



Journal of the Society of Dairy Technology 42(3): 70-77



The article describes a non-intrusive technique that is used to investigate the sedimentation/creaming of particles in a dispersion due to gravity. The velocity of ultrasound is measured over a series of heights in the dispersion, and the data are converted to concentration profiles which are collected over a period of time. Often the method detects sedimentation/creaming at a very early stage and can therefore predict the long-term shelf-life of a product. The concentration profiles reveal information on the mechanisms of separation, and in certain cases give the particle size distribution and properties of the sediment/cream layer. The application of the technique to dairy products is discussed.

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Accession: 001997640

Download citation: RISBibTeXText

DOI: 10.1111/j.1471-0307.1989.tb02160.x


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