Kinetic Study of 2,4,5- Trichlorophenol Photodegredation in the Presence of TiO2

Abstract

The effects of non- porous powder samples of TiO2 (with specific surface
areas of about 55 m2g-l) on the kinetics of disappearance of 2,4,5Trichlorophenol
(2,4,5- TCP) in water were determined.
The photocatalytic character of the 2,4,5- TCP disappearance in its presence was
shown by (i) the effects of the catalyst mass on the initial rate ro, (ii) the Langmuirian
-type relationship between ro and Co (iii) the low activation energy of 2,4,5- TCP
disappearance (iV) the effect of pH solution, (V) the effect of initial concentration Co
of 2,4,5- TCP on the rate of photodegradation ro by using medium pressure mercury
lamp at 125 W.