Kinetic study of 2,4,5- trichlorophenol photodegredation in the presence of tio2

الملخص EN

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 TCP) in water were determined.2, 4, 5-) 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.