Sono-photocatalytic degradation of 2-chlorophenol in water: kinetic and energetic comparison with other techniques

The degradation of 2-chlorophenol in water was kinetically investigated usi ng the following different techniques, employed either separately or simult aneously, always with the same experimental set-up: light irradiation (315- 400 nm), sonication, photocatalysis with different types of TiO2, photocata lysis with sonication. The influence of the reaction volume and of differen t gas mixtures, containing Ar and O-2, as well as O-2/O-3, was also investi gated. Finally, an energetic comparison among these different techniques wa s performed, focused on an industrial application of some of them. (C) 2001 Elsevier Science B.V. All rights reserved.