抄録
Ultrasonic degradation of 2,4-dichlorophenol (2,4-DCP), was studied under different dissolved gases oxygen, air, argon, or nitrogen in the liquid temperature 20℃ at 489 kHz. The degradation rate increased significantly in the presence of O_2, and Ar, the lowest was nitrogen. The experiment was performed at three different pH levels, pH: 11, 6.4, & 2; and height degradation was obtained at pH: 6.4, which is under O_2 1.9 & 1.6 times higher than acidic and basic conditions respectively. For both the systems under different gases the degradation rate decreased in the order O_2 > Ar > air > N_2. The degradation rate was height in presence of O_2 expected 2,4-DCP was in molecular form caused significant degradation.
