Abstract
The aim of this work is to evaluate the efficiency of the sonochemical effect in conjunction with a photochemical irradiation and the effects of parameters such as pH, ultrasound frequency (35 and 130 kHz), and initial concentration on the degradation processes. The oxidation of a model pollutant, phenol, has been carried out in photosonochemical reactor. It was considerably more effective than ultrasound wave or ultraviolet light alone. It may be the result of three different oxidative processes: direct photochemical action, high frequency sonochemistry and reaction with ozone (produced by ultraviolet irradiation of air). Identification of the first intermediates of the reaction (hydroquinone, catechol, benzoquinone and resorcinol) indicates that hydroxyl radicals are involved in the photosonochemical degradation mechanisms. The disappearance of phenol in each case approximately obeyed first-order kinetics with the apparent first-order decay constant increasing with decreasing solute concentration.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.