Cavitational influence on the Bacillus Cereus bacteria and Oscillatoria Brevis cyanobacteria

Abstract

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 treatment.