Evaluation of the Fenton process effectiveness in the remediation of soils contaminated by gasoline: Effect of soil physicochemical properties
| Autor: | Katia Siedlecki, Daniele Scheres Firak, André R. Lopes, Patricio Peralta-Zamora, Alecsandra Santos, Alexandre Emmel |
|---|---|
| Rok vydání: | 2018 |
| Předmět: |
inorganic chemicals
Environmental Engineering Chemical Phenomena Soil test Environmental remediation Iron Health Toxicology and Mutagenesis 02 engineering and technology BTEX 010501 environmental sciences Latosol 01 natural sciences Ethylbenzene Soil chemistry.chemical_compound Soil Pollutants Environmental Chemistry Leaching (agriculture) 0105 earth and related environmental sciences Chemistry Public Health Environmental and Occupational Health Hydrogen Peroxide General Medicine General Chemistry 021001 nanoscience & nanotechnology Pollution Podzol Environmental chemistry Soil water 0210 nano-technology Gasoline |
| Zdroj: | Chemosphere. 207:154-161 |
| ISSN: | 0045-6535 |
| Popis: | The remediation of four different soils contaminated by gasoline was performed using Fenton processes. Herein, the effect of the main physicochemical characteristics of the soils in the Fenton performance is emphasized. Fenton processes were applied in a column system, with and without addition of soluble iron (II), using undisturbed soil samples collected in four regions of the Parana State (Brazil). Two groups of contaminants were monitored during the remediation process: BTEX (benzene, toluene, ethylbenzene and xylenes) and TRHs (total recoverable hydrocarbons). Superior degradation efficiencies were observed in the soils with elevated mineral iron content (Red Argisol, Red-Yellow Argisol and Red Latosol), while the soils with low iron content (Spodosol) presented comparable degradation efficiencies only in the presence of soluble Fe2+. Although the presence of mineral iron enabled the Fenton processes, a good correlation between the iron content and the degradation efficiency was not observed, suggesting a dependence on the chemical nature of the native iron. BTEX leaching was observed in all systems, suggesting that the process should be applied with caution, especially in soils with high drainage. |
| Databáze: | OpenAIRE |
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