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  • Title: Influence of ultrasonic field on microcystins produced by bloom-forming algae.
    Author: Ma B, Chen Y, Hao H, Wu M, Wang B, Lv H, Zhang G.
    Journal: Colloids Surf B Biointerfaces; 2005 Mar 25; 41(2-3):197-201. PubMed ID: 15737547.
    Abstract:
    Under the background of algae removal and growth inhibition by ultrasonic irradiation, the effects of ultrasonic irradiation on removal of Microcystis, the concentration variation of microcystins (MC) produced by Microcystis in Microcystis suspension, and sonochemical degradation of microcystins in water, were studied in the paper. The results showed that ultrasonic irradiation could efficiently inhibit the growth of Microcystis, and ultrasonic irradiation shorter than 5 min would not introduce the increase of microcystins dissolved in Microcystis suspension simultaneity. Also, microcystins dissolved in Microcystis suspension would not increase as ultrasonic power increasing. Further research showed that microcystins were effectively degraded in ultrasonic fields. After 20 min ultrasonic irradiation at 150 kHz and 30 W, the removal rate of microcystins reached 70%.
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