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| Oliveira,Ely S. A. de; Cardoso,Paulo H. S.; Sousa,Izabelle de P.; Alvarenga,Anarelly C.; Rodrigues,Márcio N.; Sampaio,Regynaldo A.. |
| ABSTRACT In order to reduce the effect of heavy metals on the biosolid, it is necessary to promote its phytoremediation. It is important to know the total content and chemical forms of these elements in the residue for analyzing its behavior and potential toxicity. Thus, the aim of this study was to evaluate the fractionation and behavior of Cu and Zn in biosolid cultivated with Pennisetum purpureum in different periods. The experiment was carried out using a randomized complete block design. The treatments, with five replicates, corresponded to Pennisetum purpureum cultivation in biosolid for 30, 60, 90, 120 and 150 days after planting. The total contents of Cu and Zn in the biosolid remained below the critical limits established by the CONAMA Resolution... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Sequential extraction; Sewage sludge; Speciation of heavy metals. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662018000100003 |
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| Alvarenga,Anarelly C.; Sampaio,Regynaldo A.; Pinho,Gevany P.; Cardoso,Paulo H. S.; Sousa,Izabelle de P.; Barbosa,Mário H. C.. |
| ABSTRACT One of the major limitations of sewage sludge agricultural use is the presence of chlorobenzenes (CBs), which are toxic to the environment. The use of techniques of sewage sludge phytoremediation can be an important alternative for the degradation of these substances in the waste. The aim of this study was to evaluate the effect of Pennisetum purpureum cultivation time on the reduction of the concentrations of 1,4-CB and 1,3,5-CB in sewage sludge. The experiment was conducted in a greenhouse, using a randomized block design. The treatments consisted of five periods of Poaceae cultivation in sewage sludge plots (30, 60, 90, 120 and 150 days) and a control (sludge plots not cultivated). At 150 days, the control, in the layer of 0-20 cm, showed... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Sewage sludge; Toxic organic substance; Environmental pollution. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662017000800573 |
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