Fe-clay-plate as a heterogeneous catalyst in photo-Fenton oxidation of phenol as probe molecule for water treatment - Sorbonne Université Accéder directement au contenu
Article Dans Une Revue Applied Clay Science Année : 2014

Fe-clay-plate as a heterogeneous catalyst in photo-Fenton oxidation of phenol as probe molecule for water treatment

Résumé

A novel heterogeneous photo-Fenton plate catalyst was prepared by immobilizing iron species on the surface of natural Tunisian clay. The activity of this structured catalyst was assayed in the degradation of phenol under UV irradiation at two different wavelengths (245 nm, UVC, and 365 nm, UVA, radiation). Phenol removal rate from the aqueous solution always increased in the presence of the Fe-plate catalyst, even under dark-Fenton conditions and for both 254 and 365 nm UV radiation, confirming the efficiency of the prepared catalytic system in the Fenton process. HPLC analysis confirmed a phenol degradation mechanism towards an almost complete mineralization of the organic compound. An apparent activation energy of 48.7 kJ/mol was calculated from the removal experiments performed at different reaction temperatures in the presence of the Fe-plate catalyst. Catalytic activity remains almost unaltered after five consecutive reaction cycles re-using the same Fe-plate. Catalyst stability was confirmed by means of TEM–EDX analysis, pointing to this novel plate catalyst as a promising option as a Fenton heterogeneous catalyst for the mineralization of organic compounds in wastewaters.

Domaines

Chimie
Fichier non déposé

Dates et versions

hal-01078296 , version 1 (28-10-2014)

Identifiants

Citer

Haithem Bel Hadjltaief, Patrick da Costa, Patricia Beaunier, María Elena Gálvez, Mourad Ben Zina. Fe-clay-plate as a heterogeneous catalyst in photo-Fenton oxidation of phenol as probe molecule for water treatment. Applied Clay Science, 2014, 91-92, pp.46-54. ⟨10.1016/j.clay.2014.01.020⟩. ⟨hal-01078296⟩
121 Consultations
0 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More