Organic compounds in aqueous solution submitted to an ultrasonic irradiation behave differently according to their physical and chemical properties. In this work, degradation rate of phenol and carbon tetrachloride, has been studied at different frequencies, 20 kHz, 200 kHz, 500 kHz and 800 kHz. Whatever the frequency, it's easier to decompose CCl4 than phenol by means of ultrasonic waves. It is shown that the rates of reactions involving hydroxyl radicals (hydrogen peroxide formation and phenol degradation) have a maximal value at 200 kHz. The best yield observed at 200 kHz for the phenol degradation may be the result of a better HO° radicals availability outside of the bubble of cavitation. The degradation rate for carbon tetrachloride which decomposes into the bubble of cavitation increases with the frequency.
Skip Nav Destination
Article navigation
Research Article|
February 01 1997
Incidence of wave-frequency on the reaction rates during ultrasonic wastewater treatment
Christian Petrier;
Christian Petrier
1Laboratoire de Chimie Moléculaire et Environnement, ESIGEC-Université de Savoie, 73376 Le Bourget du Lac, France
Search for other works by this author on:
Anne Francony
Anne Francony
1Laboratoire de Chimie Moléculaire et Environnement, ESIGEC-Université de Savoie, 73376 Le Bourget du Lac, France
Search for other works by this author on:
Water Sci Technol (1997) 35 (4): 175–180.
Citation
Christian Petrier, Anne Francony; Incidence of wave-frequency on the reaction rates during ultrasonic wastewater treatment. Water Sci Technol 1 February 1997; 35 (4): 175–180. doi: https://doi.org/10.2166/wst.1997.0113
Download citation file:
Sign in
Don't already have an account? Register
Client Account
You could not be signed in. Please check your email address / username and password and try again.
Could not validate captcha. Please try again.
eBook
Pay-Per-View Access
$38.00