Abstract
The degradation of 2chloro-5methyl phenol (2C-5MP) in aqueous solution by ultrasonication (US) in the presence of TiO 2 and H 2O 2 has been studied. Maximum degradation rate of 2.66 × 10 −2 was achieved by US/TiO 2/H 2O 2 process when compared to US/TiO 2 (1.01 × 10 −2) and US/H 2O 2 (5.5 × 10 −3) systems. The effect of inorganic ions on degradation rate of 2C-5MP were found to be in the order of Cl − > SO 4 2− > HPO 4 2− > HCO 3 −. Further, the impact of synthetic additives like CCl 4 as hydrogen radical scavenger and CH 3OH as hydroxyl radical scavenger on US were studied which confirmed the involvement of hydroxyl radicals in the degradation of 2C-5MP. Kinetic studies revealed that the degradation process followed pseudo-first-order mechanism with the correlation coefficient ( R 2) of 0.9913 under experimental conditions.
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