Sonolysis apparatus consists of an Ultrasound generator Meinhardt K 80 (Germany), equipped with a Transducer E/805/T and an Ultrasound Bath 5/1575. Sonolysis is performed by means of a concave transducer membrane with a silver mirror construction, able to convert ca. 60% of electrical energy to ultrasound. Sonolysis treatment of solutions is performed in a quartz tube that immersed in the ultrasonic bath equipped with a double-glass cylinder and cooling jackets.