Soils impacted by PAHs: Would the stabilized organic matter be a green tool for the immobilization of these noxious compounds?
| Autor: | Jussara Aparecida de Oliveira Cotta, Maria Olímpia de Oliveira Rezende, Paulo R. Dores-Silva, Maria Diva Landgraf |
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| Rok vydání: | 2018 |
| Předmět: |
0211 other engineering and technologies
02 engineering and technology 010501 environmental sciences Naphthalenes 01 natural sciences chemistry.chemical_compound Soil Adsorption Benzo(a)pyrene Soil Pollutants Freundlich equation Organic matter Polycyclic Aromatic Hydrocarbons Benzene 0105 earth and related environmental sciences Naphthalene chemistry.chemical_classification Anthracenes 021110 strategic defence & security studies Anthracene Tropical Climate VERMICOMPOSTAGEM Composting Sorption General Medicine Hydrogen-Ion Concentration Pollution chemistry Environmental chemistry Pyrene Food Science |
| Zdroj: | Repositório Institucional da USP (Biblioteca Digital da Produção Intelectual) Universidade de São Paulo (USP) instacron:USP |
| ISSN: | 1532-4109 |
| Popis: | The objective of this study was to investigate the role of stabilized organic matter (vermicompost) and tropical soils in the sorption of naphthalene, anthracene and benzo[a]pyrene. The results obtained for the three compounds were extrapolated for the priority polycyclic aromatic hydrocarbons (PAHs) pollutants according to Environmental Protection Agency (US EPA). To evaluate the sorption process, high performance liquid chromatography was employed and the data was fitted by Freundlich isotherms. The results suggest that the sorption effect generally increases with the number of benzene rings of the PAHs, and that the persistence of PAHs in the environment is possibly related to the number of benzene rings in the PAH molecule. In addition, the pH of the vermicompost can strongly affect the adsorption process in this matrix. |
| Databáze: | OpenAIRE |
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