Abstract
This article describes the potential of Phoslock® to adsorb phosphorous in water bodies and, consequently, to reduce the occurrence of cyanobacteria blooms in eutrophic systems. This product was developed recently in Australia, to restore both freshwater and marine ecosystems, and it is environmentally harmless and functional within a wide gradient of pH (4-11). Experimental tests were performed in the laboratory in order to test product efficiency in removing filterable reactive phosphorous (FRP) in solutions with concentrations of 0.5 and 1.0 mg L-1. Moreover, we tested the potential effect of Phoslock in reducing the growth of a toxic strain of cyanobacteria, Microcystis aeruginosa (NPLJ4). The treatments with Phoslock, have shown significant immobilization (p 94%, p<0,001). The results have corroborated Phoslock’s ability to remove sources of phosphorous from aquatic systems and to limit cyanobacteria growth due to the lack of this nutrient. Among the existing alternatives to control eutrophication, Phoslock is certainly innovative and immobilizes phosphates within the ecosystem without promoting side effects on aquatic organisms and human beings
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