Preliminary study of the levels of metals potentially toxic in soil after sludge disposal in natura of the station of water treatment
Keywords:
Lead, Waste, Soil ChemistryAbstract
Due to the fact the sludge has intense influence anthropic, its use must be the source of study because it has significant quantities of metals potentially toxic and if it is handled incorrectly, it can contaminate the soil and the water at the disposal place. This way, the goal of this study was to evaluate the effect of the application of the sludge of the water treatment station on the chemical characteristics and on levels of metals potentially toxic from a medium textured soil. The experimental design used was completely randomized with four treatments and four repetitions, totaling 16 experimental units. The experimental units consisted of 1 polyethylene pot filled with 6 kg of substrate (soil or soil + sludge). The first treatment was filled to soil, functioning as a control. Other treatments consisted of sludge doses that corresponded to 75, 150 and 250 kg ha-1 sludge by soil. The study was conducted at the chemical laboratory of CESI-UEMA. The addition of sludge promoted significant changes in chemical properties of the soil, for example CTC, organic matter and pH. These changes contributed to increase soil quality. Under the conditions studied, the levels of copper, lead and chromium are within the tolerable limits of these metals in soils according to criteria established by CETESB and CONAMA.Downloads
Published
2014-01-09
How to Cite
Nascimento, B. L. M., Oliveira, J. D. de, Araújo, S. S., Silva, G. dos S., & Bráz, R. dos S. (2014). Preliminary study of the levels of metals potentially toxic in soil after sludge disposal in natura of the station of water treatment. Scientia Plena, 9(12). Retrieved from https://scientiaplena.emnuvens.com.br/sp/article/view/1347
Issue
Section
Articles
License
Authors who publish with this journal agree to the following terms:
- Authors retain copyright and grant the journal right of first publication with the work simultaneously licensed under a Creative Commons Attribution License that allows others to share the work with an acknowledgement of the work's authorship and initial publication in this journal.
- Authors are able to enter into separate, additional contractual arrangements for the non-exclusive distribution of the journal's published version of the work (e.g., post it to an institutional repository or publish it in a book), with an acknowledgement of its initial publication in this journal.
- Authors are permitted and encouraged to post their work online (e.g., in institutional repositories or on their website) prior to and during the submission process, as it can lead to productive exchanges, as well as earlier and greater citation of published work