Phytoplankton Removal Efficiency of an Experimental Sonication Technology
The goal of this project was to evaluate the efficiency of an experimental sonication technology in removing undesirable algal species from water samples, for potential use in treatment of water sources such as wastewater, drinking water, and ballast water. Three phytoplankton species encompassing a broad range in size (from ~4 mm to 100 mm along the major cell axis) were tested with this technology, including representative toxigenic, culturable cyanobacteria, diatoms, and dinoflagellates. Two of the taxa have resistant stages (cysts or akinetes) that were also tested with the sonication technology. The low-volume assay design included three levels of sonication intensity crossed with a minimum of four time intervals. Evaluation of these species enabled assessment of the efficacy of this sonication technology for removal of phytoplankton, including harmful species, as a general group.