Heterogeneous photo-Fenton oxidation with natural clays for phenol and tyrosol remediation
1 Laboratoire d'Ingénierie des Surfaces, Université Badji-Mokhtar, Annaba, Algérie
2 Univ. Lille Nord de France, 59000 Lille, France
3 ULCO, UCEiV EA4492, 59140 Dunkerque, France
4 Laboratoire, « Eau, Énergie et Environnement » (LR3E), ENIS, Université de Sfax, Tunisie
Due to their excellent properties, clays have been widely used in several applications, particularly in catalysis. In this paper, three clays were used as heterogeneous photo-Fenton catalysts for phenol and tyrosol oxidations. Particular attention was given to the effect of the main operating conditions on the process performance. A total conversion was obtained for both organic pollutants with studied catalysts in 20 minutes reaction. For phenol, a total organic carbon (TOC) conversion of 93% was obtained using sieved and calcined smectite clay. The TOC conversion was 60% for tyrosol with the same catalyst. Clays were characterized by chemical analysis, BET, XRD, TPR and SEM.
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