2021
DOI: 10.14808/sci.plena.2020.120201
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Lodo gerado em Estação de Tratamento de Água: Avaliação preliminar da toxicidade em plantas de milho

Abstract: O lodo é o principal resíduo gerado em Estação de Tratamento de Água (ETA), é oriundo do processo de potabilização da água, apresenta grande concentração de sólidos e, elementos químicos como o alumínio e ferro. Por esse motivo, o mesmo não pode ser descartado nos mananciais, necessitando de alternativas ambientalmente seguras para uma destinação adequada. O objetivo com esta pesquisa foi avaliar a toxicidade do lodo gerado em ETA associado ao bagaço e vinhaça de cana-de-açúcar na germinação e crescimento inic… Show more

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“…The seeds exposed to the control had growth of 26.0 ± 0.6 cm, being observed a growth stimulus in the radicles in the decanter sludge (41.9 ± 5.5 cm, CV = 13.0%) and to the filter sludge (40.7 ± 8.3 cm, CV = 20.5%) exposure. This growth stimulus could be associated to the high levels of organic matter and humic substances in the WTP, evidencing the agricultural potential of this type of effluent [29] or they may have caused symptoms of nutritional deficiency [30]. However, it is necessary to consider the significant levels of aluminum present in the sludge (Table 2) that may compromise the plant development such as stem, leaves, and fruits [31].…”
Section: Resultsmentioning
confidence: 99%
“…The seeds exposed to the control had growth of 26.0 ± 0.6 cm, being observed a growth stimulus in the radicles in the decanter sludge (41.9 ± 5.5 cm, CV = 13.0%) and to the filter sludge (40.7 ± 8.3 cm, CV = 20.5%) exposure. This growth stimulus could be associated to the high levels of organic matter and humic substances in the WTP, evidencing the agricultural potential of this type of effluent [29] or they may have caused symptoms of nutritional deficiency [30]. However, it is necessary to consider the significant levels of aluminum present in the sludge (Table 2) that may compromise the plant development such as stem, leaves, and fruits [31].…”
Section: Resultsmentioning
confidence: 99%