Ultrasonic treatment modifies emulsion properties, indicating potential improvements in oil and water mixtures.
The influence of ultrasonic treatment modes on microstructure and structural-rheological properties of emulsions of oils with distilled and formation water was investigated. Emulsions were treated in ultrasonic field (frequency 22 kHz, intensity 2, 6 and 18 W/cm2). The microstructure of emulsions was studied using an optical microscope AXIO LAB.A1 (Carl Zeiss, Germany). The dispersion analysis of emulsion micrographs was carried out and the influence of processing conditions, type of dispersed phase on the average particle size, dispersibility and position of the maximum of the size distribution of water droplets in the emulsion was revealed. Rheological parameters of emulsions before and after ultrasonic treatment were studied using HAAKE Viscotester iQ rotational viscometer (ThermoScientific, USA). For high-viscosity oil with high content of resinous-asphaltene components after ultrasonic treatment in pulse mode at field intensity of 6 W/cm2 and 2 modes (5 cycles with 10 s of operation and 10 s of pause; 10 cycles with 5 s of operation and 5 s of pause) a decrease in the degree of dispersibility of water droplets was observed.
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G. I. Volkova (2025) studied this question.
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