Comprehensive experimental and numerical investigations of the effect of frequency and acoustic intensity on the sonolytic degradation of naphthol blue black in water

Ultrasonics Sonochemistry
Hamza FerkousMiloud Guemini

Abstract

In the present work, comprehensive experimental and numerical investigations of the effects of frequency and acoustic intensity on the sonochemical degradation of naphthol blue black (NBB) in water have been carried out. The experiments have been examined at three frequencies (585, 860 and 1140 kHz) and over a wide range of acoustic intensities. The observed experimental results have been discussed using a more realistic approach that combines the single bubble sonochemistry and the number of active bubbles. The single bubble yield has been predicted using a model that combines the bubble dynamics with chemical kinetics consisting of series of chemical reactions (73 reversible reactions) occurring inside an air bubble during the strong collapse. The experimental results showed that the sonochemical degradation rate of NBB increased substantially with increasing acoustic intensity and decreased with increasing ultrasound frequency. The numerical simulations revealed that NBB degraded mainly through the reaction with hydroxyl radical (OH), which is the dominant oxidant detected in the bubble during collapse. The production rate of OH radical inside a single bubble followed the same trend as that of NBB degradation rate. It increa...Continue Reading

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Aug 16, 2014·Ultrasonics Sonochemistry·Slimane MerouaniMiloud Guemini
Oct 12, 2014·Ultrasonics Sonochemistry·Slimane MerouaniMiloud Guemini

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Citations

Dec 27, 2018·Environmental Technology·Oualid Hamdaoui, Slimane Merouani
Feb 27, 2017·Water Environment Research : a Research Publication of the Water Environment Federation·Oualid Hamdaoui, Slimane Merouani
Mar 12, 2021·Ultrasonics Sonochemistry·Aissa DehaneAbdulaziz Alghyamah
Mar 21, 2018·Ultrasonics Sonochemistry·Kaouther Kerboua, Oualid Hamdaoui
Jun 22, 2017·Ultrasonics Sonochemistry·Kaouther Kerboua, Oualid Hamdaoui
Nov 16, 2017·Ultrasonics Sonochemistry·Slimane MerouaniBoumediene Haddad

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