Abstract

Photocatalytic Degradation Of Textile Dyes By Immobolized TiO2 In Presence Of UV Irradiation

Author(s): Noureddine Barka, Ali Assabbane, Yhia Ait ichou, Abederrahman Nounah

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.