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Journal of Dispersion Science and Technology Volume 34, 2013 - Issue 4
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Original Articles

Demulsification of Gas Oil/Water Emulsion via High-Intensity Ultrasonic Standing Wave

H. Ghafourian Nasiri Department of Chemical Engineering, Faculty of Engineering, Ferdowsi University of Mashhad, Mashhad, Iran
,
M. T. Hamed Mosavian Department of Chemical Engineering, Faculty of Engineering, Ferdowsi University of Mashhad, Mashhad, IranCorrespondence[email protected] [email protected]
&
R. Kadkhodaee Department of Food Technology, Khorasan Institute of Food Research, Mashhad, Iran
Pages 483-489 | Received 29 Jan 2012, Accepted 05 Mar 2012, Published online: 29 Mar 2013
 
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Abstract

High-intensity ultrasonic standing wave field was established in a horizontal direction and its effect on “gas oil” in “water” emulsion separation rate was studied. Also, effects of four parameters on emulsion instability behavior were investigated: ultrasound irradiation time (5–30 min), emulsion position in ultrasound field (17–37 cm), ultrasound input intensity (20, 45, and 75%) and dispersed phase concentration (0.5, 2, and 10%). Emulsion light absorbance, droplet diameter and distribution were measured to analyze separation efficiency. The optimum states were 10% oil in water emulsion treated at 17 cm distance from ultrasound source under 30 minutes irradiation time and 20% sound intensity.

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