Abstract:
Abstract
The development of advanced oxidation procedures for the treatment of water
contaminated with organic matters is an attempt to take advantage of the non-selectivity
and rapidity of hydroxyl radicals OH° reaction.
This work deals with the application of a class of AOP: heterogeneous photocatalysis,
for degradation of Basic Blue (BB41). This study is carried out in a photocatalytic reactor
with artificial light on a semi-pilot scale in the presence of a photocatalyst: titanium
dioxide, Degussa (TiO2:P25).
The application of the experimental design method on the reactor allowed us to optimize
and model the photocatalytic degradation of Basic Blue and to evaluate the influence of
the four parameters which are: the initial concentration of the dye, the concentration of
TiO2, the recirculation rate and the reaction time. They also allowed us to define the
optimum conditions for achieving a maximum discoloration rate of 0.93 g / L for TiO2, 10
mg / L for BB41, 300 L / h for the recirculation flow rate and a reaction time Equal to 120
minutes. Under these conditions, photocatalysis is capable of efficiently degrading the dye
with a degree of discoloration of 81.68%.
