Repository of Research and Investigative Information

Repository of Research and Investigative Information

Kurdistan University of Medical Sciences

Photosonochemical degradation of phenol in water

(2010) Photosonochemical degradation of phenol in water. Desalination and Water Treatment.

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Official URL: https://www.scopus.com/inward/record.uri?eid=2-s2....

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. © 2010 Desalination Publications.

Item Type: Article
Keywords: Phenol; Photosonochemistry; Ultrasound; Ultraviolet
Page Range: pp. 197-202
Journal or Publication Title: Desalination and Water Treatment
Volume: 20
Number: 1-3
Publisher: Taylor and Francis Inc.
Identification Number: 10.5004/dwt.2010.1562
ISSN: 19443994
Depositing User: مهندس جمال محمودپور
URI: http://eprints.muk.ac.ir/id/eprint/1564

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