Fenton-like and potassium permanganate oxidations of PAH-contaminated soils: Impact of oxidant doses on PAH and polar PAC (polycyclic aromatic compound) behavior

Autor: Alain Saada, Coralie Biache, Marine Boulangé, Pierre Faure, Catherine Lorgeoux
Přispěvatelé: Laboratoire Interdisciplinaire des Environnements Continentaux (LIEC), Institut Ecologie et Environnement (INEE), Centre National de la Recherche Scientifique (CNRS)-Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire Terre et Environnement de Lorraine (OTELo), Institut national des sciences de l'Univers (INSU - CNRS)-Université de Lorraine (UL)-Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS)-Université de Lorraine (UL)-Centre National de la Recherche Scientifique (CNRS), GeoRessources, Centre National de la Recherche Scientifique (CNRS)-Université de Lorraine (UL)-Centre de recherches sur la géologie des matières premières minérales et énergétiques (CREGU)-Institut national des sciences de l'Univers (INSU - CNRS), Bureau de Recherches Géologiques et Minières (BRGM) (BRGM)
Rok vydání: 2018
Předmět:
Environmental Engineering
Oxygenated polycyclic aromatic compound (O-PAC)
Environmental remediation
Health
Toxicology and Mutagenesis
Iron
education
0208 environmental biotechnology
chemistry.chemical_element
02 engineering and technology
010501 environmental sciences
GEOF
01 natural sciences
Coking plant soil
chemistry.chemical_compound
Soil
Potassium Permanganate
Chemical oxidation
Environmental Chemistry
Soil Pollutants
Organic matter
Polycyclic Aromatic Hydrocarbons
Environmental Restoration and Remediation
0105 earth and related environmental sciences
chemistry.chemical_classification
[SDE.IE]Environmental Sciences/Environmental Engineering
Permanganate
Public Health
Environmental and Occupational Health
food and beverages
General Medicine
General Chemistry
Hydrogen Peroxide
Contamination
Gas plant soil
Oxidants
Pollution
Nitrogen
020801 environmental engineering
Nitrogen heterocyclic polycyclic aromatic compound (N-PAC)
Potassium permanganate
chemistry
13. Climate action
Environmental chemistry
Soil water
Degradation (geology)
[CHIM.OTHE]Chemical Sciences/Other
Oxidation-Reduction
Zdroj: Chemosphere
Chemosphere, Elsevier, 2019, 224, pp.437-444. ⟨10.1016/j.chemosphere.2019.02.108⟩
ISSN: 1879-1298
0045-6535
Popis: International audience; (C. Biache). HIGHLIGHTS  KMnO4 and Fenton-like treatments were applied to PAH contaminated soils.  The impact of two oxidant doses on PAC contamination were studied.  Treatments were less efficient on soil with low PAC availability.  KMnO4 was more efficient to degrade the PAH than Fenton-like.  Low dose of KMnO4 induced the formation of toxic oxygenated by-products. Abstract Potassium permanganate and Fenton-like oxidations were applied on two PAH-contaminated soils collected on former coking plant and gas plant sites. The impact of oxidant dose on the polycyclic aromatic compound (PAC) evolution, including 16 US-EPA PAHs, 11 oxygenated-and 4 nitrogen heterocyclic-PACs (O-and N-PACs) was studied for both treatments. The content of extractable organic matter and PACs was determined prior and after oxidation. Overall, permanganate treatment was more efficient than Fenton-like to decrease the PAH content, this latter being limited by the contamination availability. However, permanganate treatment resulted in incomplete PAH degradation, leading to the formation of O-PACs, that was limited with the application of higher dose. It underlines the importance of the dose and the oxidant type in the selection of oxidation parameters for remediation purpose, as improper use of oxidant can lead to the accumulation of oxidation by-products that could be as toxic as the parent compounds.
Databáze: OpenAIRE
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