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We studied the kinetics and activation energy of solvent swelling in Qinyuan and Xiongshan coal in perchloroethylene (PCE) using conventional and ultrasonication-enhanced treatment conditions. Kinetic parameters suggested that both coal types exhibited anomalous diffusion regardless of treatment conditions. However, the kinetic parameter n, an exponent that crudely indicates the nature of the solvent...
The sonochemical degradation of 17β-estradiol (E2) and 17α-ethinylestradiol (EE2) in water and wastewater was investigated at ultrasonic frequency of 850 kHz. The effects of pH, initial concentrations, temperature, power and dissolved organic carbon were examined. The results obtained indicated that the rate of ultrasonic degradation of E2 and EE2 in water and wastewater is influenced by the pH, power,...
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