| Titre : | Chlorinated byproducts from the fenton-like oxidation of polychlorinated phenols (2012) |
| Auteurs : | Macarena Munoz, Auteur ; Zahara M. De Pedro, Auteur ; Gema Pliego, Auteur |
| Type de document : | Article : texte imprimé |
| Dans : | Industrial & engineering chemistry research (Vol. 51 N° 40, Octobre 2012) |
| Article en page(s) : | pp. 13092–13099 |
| Note générale : | Industrial chemistry |
| Langues : | Anglais |
| Tags : | Oxidation Phenols |
| Résumé : | Fenton-like oxidation has proved to be highly efficient in the degradation of polychlorinated phenols (poly-CPs) at 50 °C provided that the H2O2 dose is adjusted appropriately. Using the theoretical stoichiometric H2O2/poly-CP molar ratio allowed a high mineralization of the starting poly-CPs, with negligible residual concentrations of chlorinated organic species and a dramatic reduction of ecotoxicity. Nevertheless, at substoichiometric H2O2 doses, a wide variety of chlorinated condensation byproducts (chlorinated diphenyl ethers, biphenyls, and dibenzofurans) were detected. A chlorinated aromatic iron-containing solid polymer was also formed. At these substoichiometric H2O2 doses, the ecotoxicity values even increased with respect to those of the starting poly-CPs. A reaction scheme is proposed to describe the Fenton-like oxidation of poly-CPs that includes all of the intermediates detected under substoichiometric conditions and used to develop a kinetic model based on TOC lumps. This kinetic model describes fairly well the time evolution of TOC upon the Fenton-like oxidation of poly-CPs. |
| ISSN : | 0888-5885 |
| En ligne : | http://pubs.acs.org/doi/abs/10.1021/ie3013105 |
