Ultrasonic irradiation for blue-green algae control
Ultrasonic irradiation has recently been evaluated as a rapid alternative for algal bloom control.
In a research carried out at the Institute of Applied Biochemistry, University of Tsukuba, Japan by Lee, Nakano and Matsumara , the effects of ultrasonic irradiation on blue-green algae were investigated, considering the factors affecting their sedimentation and death.
Ultrasonic devices are already applied to ponds, pools, lakes and reservoirs to destroy algae and control their growth in an environmentally friendly way.
Their efficiency is measured in active radius, the linear distance they can irradiate. The algae will disappear approximately in a semicircular surface having the active radius correspondent to the model chosen. Of course factors as average temperature, walls consistency, presence of obstacles etc. should be considered in the efficiency estimation.
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Click here to learn more about the problem of eutrophication of water bodies.
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