SONOPHOTOCHEMICAL DESTRUCTION OF AQUEOUS-SOLUTION OF 2,4,6-TRICHLOROPHENOL

The combination of ultrasound and photochemistry have been used to deg rade an aqueous solution of 2,4,6-trichlorophenol. An ultrasonic probe of 22 kHz frequency and a UV tube of 15W have been used. Anatase grad e TiO2 was used as the semiconductor catalyst. The effect of parameter s such as ultrasonic intensity, operating conditions, type of ultrason ic equipment, and mode of UV transmission have been studied. The sonop hotochemical degradation has been found to be dependent on the intensi ty of sonication, temperature of the reaction, and the type of ultraso nic equipment used, but was independent of the mode of UV transmission . Enhancement in the degradation rate has been observed at a higher so nication intensity and temperature of the solution. (C) 1998 Elsevier Science B.V. All rights reserved.