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Abstract
Different operating factors of jet cavitation method affecting one of cyanobacterial's (Microcystis aeruginosa) growths were investigated. The inhibition on M. aeruginosa growth by the jet cavitation method depended strongly on the hydraulic characteristics of cavitation tube, inlet pressure, cavitation number, light and different algae concentrations. The inhibitive efficiency of 64.58% in field water sample was obtained by this method. Moreover, the ultrastructural changes of M. aeruginosa before and after treatment were observed by the transmission electron microscope (TEM). The changes of UV-Visible spectra further demonstrated the inhibitive behaviors of jet cavitation on the growth of M. aeruginosa. The experimental results showed that jet cavitation method was a potential physical technology that could effectively inhibit the growth of M. aeruginosa.