Ultrasound Emulsification—An Overview

ABSTRACT Fundamentals and applications of ultrasound emulsification are reviewed. The importance of cavitation is stressed, as also is power input to the multiphase fluid. The influence of surfactants, polymeric stabilizers, temperature, pressure, and ultrasonic parameters such as frequency, residence time, acoustic intensity, and energy density are described. The effects of other physicochemical parameters such as emulsifier concentration, disperse phase volume fraction, and viscosity are discussed. Applications to both water-in-oil and oil-in-water emulsions are discussed.

[1]  H. S. Fogler,et al.  Acoustic emulsification. Part 1. The instability of the oil-water interface to form the initial droplets , 1978, Journal of Fluid Mechanics.

[2]  Aniruddha B. Pandit,et al.  Quantification of cavitation intensity in fluid bulk , 1995 .

[3]  T. Mason.  Ultrasound in synthetic organic chemistry , 1997 .

[4]  D. Skauen,et al.  A study of dispersion with ultrasound. II. , 1958, Journal of the American Pharmaceutical Association. American Pharmaceutical Association.

[5]  C. G. Sunner.  Emulsions in theory and practice. , 1960 .

[6]  M. Tarr,et al.  Aqueous sonolytic decomposition of polycyclic aromatic hydrocarbons in the presence of additional dissolved species. , 2001, Ultrasonics sonochemistry.

[7]  Yves Lion,et al.  Sonolysis of aqueous surfactant solutions. Probing the interfacial region of cavitation bubbles by spin trapping , 1989 .

[8]  D. Skauen,et al.  Influence of power on quality of emulsions prepared by ultrasound. , 1972, Journal of pharmaceutical sciences.

[9]  H. Schubert,et al.  Influence of hydrostatic pressure and gas content on continuous ultrasound emulsification. , 2001, Ultrasonics sonochemistry.

[10]  J. Raso,et al.  Influence of different factors on the output power transferred into medium by ultrasound. , 1999, Ultrasonics sonochemistry.

[11]  A. Henglein.  Chemical effects of continuous and pulsed ultrasound in aqueous solutions , 1995 .

[12]  H. S. Fogler,et al.  Acoustic emulsification. Part 2. Breakup of the large primary oil droplets in a water medium , 1978, Journal of Fluid Mechanics.

[13]  Inez Hua,et al.  Application of Ultrasonic Irradiation for the Degradation of Chemical Contaminants in Water , 1996 .

[14]  Chandra M. Sehgal,et al.  Sonoluminescence of argon saturated alkali metal salt solutions as a probe of acoustic cavitation , 1979 .

[15]  Magdi M. Mossoba,et al.  Chemical effects of ultrasound on aqueous solutions. Formation of hydroxyl radicals and hydrogen atoms , 1983 .

[16]  William T. Richards,et al.  THE CHEMICAL EFFECTS OF HIGH FREQUENCY SOUND WAVES II. A STUDY OF EMULSIFYING ACTION , 1929 .

[17]  C. Gourdon,et al.  Emulsification by ultrasound: drop size distribution and stability. , 1999, Ultrasonics sonochemistry.

[18]  B. Brown,et al.  High-intensity ultrasonics , 1965 .

[19]  C. Bondy,et al.  On the mechanism of emulsification by ultrasonic waves , 1935 .

[20]  Ax,et al.  Influence of continuous phase viscosity on emulsification by ultrasound , 2000, Ultrasonics sonochemistry.

[21]  G. Meunier,et al.  TURBISCAN MA 2000: multiple light scattering measurement for concentrated emulsion and suspension instability analysis. , 1999, Talanta: The International Journal of Pure and Applied Analytical Chemistry.

[22]  A. Loomis.  XXXVIII. The physical and biological effects of high-frequency sound-waves of great intensity , 1927 .

[23]  Timothy J. Mason,et al.  Effect of ultrasound on the degradation of aqueous native dextran , 1995 .

[24]  Pieter Walstra,et al.  Formation of emulsions. , 1998 .

[25]  T. J. Mason,et al.  Ultrasonic intensification of chemical processing and related operations : A review , 1996 .

[26]  C. Gourdon,et al.  Emulsification processes: on-line study by multiple light scattering measurements. , 2000, Ultrasonics sonochemistry.

[27]  Muthupandian Ashokkumar,et al.  ULTRASOUND ASSISTED CHEMICAL PROCESSES , 1999 .

[28]  H. S. Fogler,et al.  Emulsion stability of acoustically formed emulsions , 1980 .

[29]  R. W. Wood,et al.  Biological and physical effects of ultrasound , 1927 .

[30]  P. Gogate,et al.  HYDRODYNAMIC CAVITATION REACTORS: A STATE OF THE ART REVIEW , 2001 .

[31]  Pieter Walstra,et al.  Principles of emulsion formation , 1993 .

[32]  T J Mason,et al.  Large scale sonochemical processing: aspiration and actuality. , 2000, Ultrasonics sonochemistry.

[33]  R. Davidson,et al.  Applications of ultrasound to organic chemistry , 1987 .

[34]  K. M. Swamy,et al.  REACTORS FOR SONOCHEMICAL ENGINEERING - PRESENT STATUS , 1999 .

[35]  Timothy J. Mason,et al.  Sonochemistry : theory, applications and uses of ultrasound in chemistry , 1988 .