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- Title
Bioestimulação como forma de recuperação de áreas contaminadas por hidrocarboneto no semiárido nordestino.
- Authors
Alves de Araújo, Ana Beatriz; Oliveira Aragão, Ana Katarina; Jobim, Khadija; da Silva Teixeira, Antônio Diego; Veras de Souza, Ana Luiza; da Costa Bandeira, Priscila Pascali; da Costa Bandeira, Poliana Maria da Costa
- Abstract
The recovery of areas contaminated by petroleum hydrocarbons arose due to the great environmental impact resulting from accidents involving leakage during extraction, transport in pipelines, vessels and industrial units. Bioremediation is considered to be a sustainable and economically viable method for reducing or remedying contamination in the provoked environment. Among the developed techniques, biostimulation is an option to accelerate the native soil microbiota with the addition of nutrients. The experiment was conducted in sandy soil contaminated with petroleum and biostimulated with fertilizers. The objective of this work was to evaluate the biostimulation with nitrogen, phosphorus and potassium (NPK) in the degradation of hydrocarbons. Thus, the experiment was conducted for a period of 105 days evaluating the CO2 production by the respirometry method. The treatments were arranged in a randomized block, according to five petroleum doses (0, 1, 3, 5 and 10%) and five (NPK) doses equivalent to 0, 250, 500, 1250 and 2500 kg ha-1 of the 10-30-20 formulation, with three replicates. It was verified that the highest C-CO2 production was 3.539.40 mg kg-1 for the doses of 9.20% of petroleum, and 2,435 kg ha-1 for NPK.
- Subjects
POLLUTION; PIPELINE transportation; SANDY soils; PRODUCTION methods; PETROLEUM
- Publication
Nature & Conservation, 2022, Vol 15, Issue 3, p71
- ISSN
2318-2881
- Publication type
Article
- DOI
10.6008/CBPC2318-2881.2022.003.0006