title: Restoration of polluted waters by phytoremediation using Myriophyllum aquaticum (Vell.) Verdc., Haloragaceae.
abstract: The present study assessed the reduction of nutrients and organic matter in polluted waters using Myriophyllum aquaticum. Twelve experimental groups were established and distributed in six control groups (CG) and six plant treated groups (PTG). The following analyses were performed in three sampling sets and measured every three days: chemical oxygen demand (COD), biochemical oxygen demand (BOD), ammoniacal nitrogen (AN), organic nitrogen (ON), total Kjeldahl nitrogen (TKN), and total phosphorus (TP). Dissolved oxygen (DO), pH, electrical conductivity (EC), and temperature (TEMP). The parameters that showed variation between the experimental groups were dissolved oxygen (0.1-5.0 mg L(-1)), pH (7.5-8.5), electrical conductivity (550-750 μS cm(-1)), and temperature (15-19 °C). The highest level of removal was observed on day 30 as 75.4% for BOD; 67.4% for COD; 88.3% for TKN; and 93.6% for TP. The use of M. aquaticum demonstrated its potential application in phytoremediation, showing reductions in COD, BOD, and TP at day 15, and in AN and TKN at day 30.
authors.affiliation: Department of Biological Sciences, Universidade Positivo (UP), R. Prof. Pedro Viriato Parigot de Souza, 5300 CEP 81.280-330, Curitiba, PR, Brazil. souza.fernanda@gmail.com.br
authors.forename: Fernanda Aguiar
authors.initials: FA
authors.lastname: Souza
authors.forename: Maurício
authors.initials: M
authors.lastname: Dziedzic
authors.forename: Selma Aparecida
authors.initials: SA
authors.lastname: Cubas
authors.forename: Leila Teresinha
authors.initials: LT
authors.lastname: Maranho
mesh_terms: D001673:Biodegradation, Environmental; D019684:Magnoliopsida / Q000378:metabolism*; D014865:Waste Disposal, Fluid / Q000379:methods*; D018508:Water Purification / Q000379:methods*