Noureddine Barka, Ali Assabban
Abstract
Immobilized Titanium dioxide (TiO2) was used for the investigation of the photocatalytic degradation of Methyl Orange (MO) used as model pollutant compound, and Rhodamine B (RhB) as a potentially pollutants in aqueous solutions. The photocatalyst consist on Ahlstrom non-woven paper coated with photocatalytic titanium dioxide (Millennium PC500 anatase) and mineral specific surface extender (SiO2 and zeolite UOP 2000). The process consists on recovering inside a batch reactor with a film of the photocatalyst and using UV lamp as irradiation source. It was found that there was a low adsorption in the dark and in the presence of the photocatalyst, also no degradation was observed for MO when the solution placed under UV irradiation without the photocatalyst, but a low degradation ratio was observed for RhB. The experimental results show that the rate of degradation follows pseudo-first kinetic order with respect to MO and RhB concentration.