The Use of Cavitating Jets to Oxidize Organic Compounds in Water

[+] Author and Article Information
K. M. Kalumuck, G. L. Chahine

DYNAFLOW, Inc., 7210 Pindeil School Rd., Fulton, MD 20759 e-mail: info@dynaflow-inc.com

J. Fluids Eng 122(3), 465-470 (May 03, 2000) (6 pages) doi:10.1115/1.1286993 History: Received October 14, 1999; Revised May 03, 2000
Copyright © 2000 by ASME
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Pressure field associated with nonspherical bubble collapse. Taken from Chahine and Duraiswami 19
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Sketch of jet loop capable of 56 gpm at 60 psi
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Sketch of ultrasonic experimental setup
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Ultrasonic sonication of PNP at pH=3.5. Top: concentration versus time. Bottom: oxidation efficiency.
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Cavitating jet oxidation of PNP: pH=3.8, T=107°F, ambient pressure=20 psia, pressure entering nozzles =75 psia, flow rate=57 gpm, C0=8 ppm. Top: time variation of the ratio of PNP concentration to its initial value. Bottom: oxidation efficiency.
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Influence of temperature on cavitation effects exhibiting a region of maximum influence. (a) Jet oxidation efficiency of PNP at 4, 5, and 6 hours of operation; pH=3.8, ambient pressure=21 psia, pressure entering nozzles=70 psi. (b) Erosion of aluminum as a function of temperature for various liquids; taken from Brown and Goodman 1.
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Influence of pH on jet oxidation efficiency of PNP: T=107°F, ambient pressure=20 psia, pressure entering nozzles=75 psia
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Influence of cavitation number, sigma, on jet oxidation of PNP: pH=3.8, T=107°F




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