Azo-dye Orange II degradation by Fenton's reaction using Fe/ZSM-5 zeolite as catalyst

• Type: Article in International Conference Proceedings Book
• Date: 2009

Authors

Filipa Duarte (Author) FEUP; Luís M. Madeira (Author) FEUP

Conference proceedings International

Title: 2nd European conference on Environmental Applications of Advanced Oxidation Processes (EAAOP2)

EAAOP2

Nicosia, Chipre, 9-11 Setembro

Scientific classification

FOS: Engineering and technology > Chemical engineering

Other information

Abstract (EN): This work deals with the non-biodegradable azo-dye Orange II degradation using the heterogeneous Fenton-like reaction using Fe/ZSM-5 zeolite as catalyst. The influence of some relevant parameters was studied, namely pH and temperature in the ranges 3.0 ¿ 8.5 and 30 ¿ 53 ºC, respectively. Decolorization degree, TOC removal and leaching were evaluated along time in the experiments done. It was found that temperature has a predominant effect in OII concentration and TOC reduction while pH is more important in the metal loss from the support. Degradation increases with temperature and leaching decreases when initial pH value increases. It was possible to decolorized OII under less acidic conditions than those conventionally performed in Fenton¿s oxidation, compensating this with the increase of temperature (30 to 35 ºC for a pH increase from 3.0 to 5.2), which is a promising approach since textile effluents are characterized by high temperatures and pH values.

Language: English

Type (Professor's evaluation): Scientific

Notes: CD: N100, 6 págs. (comunicação oral)

No. of pages: 6