Iryna Z. Koval
Conference: International Symposium “The Environment and the Industry”
Date: October 13-14, 2016
Location: Bucharest, Romania
Published: 2016
Bacillus cereus
Cell destruction
Oscillatoria brevis
Cavitation action has shown high efficiency of water purification of bacterial cells and
cyanobacteria. The general and combined relative series of Bacillus cereus effective
destruction in water medium under cavitational conditions in the gas atmosphere is: Ar/US >
О2/US > Не/US > СО2/US. It was detected mechanical destructions of the bacterial cells after
1 minute of sonication process and almost completely destroyed cyanobacteria after sonication
time of 2-3 seconds. Destruction of bacterial cells is described by a kinetic reaction of the first
order. Even short-term sonication of low intensity and low frequency leads to completely
mechanical destruction of microorganisms. Bacterial cells after disaggregation retains
morphological features and fully viable. But, despite this, B. cereus and Oscillatoria brevis have
lost the ability of physiological generation of the cells and reproduction ability after cavitational

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