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Degradation of polycyclic aromatic hydrocarbons in different synthetic solutions by Fenton’s oxidation.

Bendouz, Malika; Tran, Lan Huong; Coudert, Lucie; Mercier, Guy; Blais, Jean-François (2017). Degradation of polycyclic aromatic hydrocarbons in different synthetic solutions by Fenton’s oxidation. Environmental Technology , vol. 38 , nº 1. p. 116-127. DOI: 10.1080/09593330.2016.1188161.

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Résumé

The Fenton oxidation using phenanthrene (Phe), fluoranthene (Fle) and benzo[a]pyrene (BaP) as representative polycyclic aromatic hydrocarbon (PAH) contaminants was examined. The effect of the H₂O₂ concentration, the temperature and the competition between the PAHs in different solutions (methanol, surfactant and quartz) was investigated. The Fenton oxidation process was performed at pH = 2.5. The best conditions were recorded by adding 15 g H₂O₂ L⁻ ¹ with a molar H₂O₂/Fe²⁺ ratio of 10/1 at T = 60°C. Phe, Fle and BaP were efficiently degraded in aqueous solution (Phe = 99%, Fle = 99% and BaP = 90%). The present study demonstrated that Phe, Fle and BaP were degraded to intermediate compounds and also oxidized to carbon dioxide. Among the by-products obtained, phthalic acids and benzoic acid were recorded as the major products.

Type de document: Article
Mots-clés libres: polycyclic aromatic hydrocarbon; phenanthrene; fluoranthene; benzo[a]pyrene, Fenton oxidation
Centre: Centre Eau Terre Environnement
Date de dépôt: 06 sept. 2017 20:57
Dernière modification: 06 sept. 2017 20:57
URI: http://espace.inrs.ca/id/eprint/5177

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