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KREBS, Vinícius; OLIVEIRA, Renata Farias  and  SCHRODER, Nádia Teresinha. Evaluation of the efficiency of floating islands with plants for improving the water quality of aquatic ecosystems. Aletheia [online]. 2021, vol.54, n.1, pp. 16-27. ISSN 1413-0394.

ABSTRACT The use of water has always been vital for human survival, but with its actions, impacts on ecosystems have emerged, compromising quality. The aquatic ecosystem has been harmed by this, mainly, by the inadequate disposal of untreated effluents. This work aimed to evaluate the efficiency of floating islands with plants, in order to observe the improvement of the water quality of aquatic ecosystems. For this, the behavior of macrophytes on floating islands was analyzed, using a controlled experiment. The island proved to be efficient and resistant and can be used to remove macronutrients. The removal efficiency was about 25% of total phosphate and phosphorus, in an analysis period of 60 days. This indicates that with a longer period of analysis, the removal result may be higher, as well as the density of biomass for the island's population and its application in compromised water bodies.

Keywords : efficiency; island floating plants; water quality.

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