FIELD: methods of extraction, separation and concentration of substances, particularly, liquid-liquid extraction. SUBSTANCE: method includes periodic transverse vibration of interphase system performed by means of vibrator. Vibrator plate is located on interphase surface. Frequency of vibrator mechanical vibrations is taken equal to resonance frequency of capillary waves. EFFECT: accelerated mass-transfer in extraction of substances by liquid-liquid extraction method. 5 cl, 5 ex
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