Sonolysis, photolysis, and sequential sonophotolysis for the degradation of 2,4,6-Trichlorophenol: the effect of solution concentration

Ultrasonic sound waves, ultraviolet-A irradiation and a combination of these two techniques were applied to a non-catalytic aqueous system containing 2,4,6-trichlorophenol (TCP) to study the effectiveness of sonolytic, photolytic and sonophotolytic oxidation processes in the degradation of TCP. The...

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Main Authors:	Collin G. Joseph, Gianluca Li-Puma, Awang Bono, Yun Hin Taufiq-Yap, Duduku Krishnaiah
Format:	Default Article
Published:	2015
Subjects:	Chemical engineering not elsewhere classified Photolysis Sonolysis Sonophotolysis 2,4,6-Trichlorophenol Chemical Engineering not elsewhere classified
Online Access:	https://hdl.handle.net/2134/19050
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id	rr-article-9244760
record_format	Figshare
spelling	rr-article-92447602015-01-01T00:00:00Z Sonolysis, photolysis, and sequential sonophotolysis for the degradation of 2,4,6-Trichlorophenol: the effect of solution concentration Collin G. Joseph (7130177) Gianluca Li-Puma (1252566) Awang Bono (7130180) Yun Hin Taufiq-Yap (7130183) Duduku Krishnaiah (7130186) Chemical engineering not elsewhere classified Photolysis Sonolysis Sonophotolysis 2,4,6-Trichlorophenol Chemical Engineering not elsewhere classified Ultrasonic sound waves, ultraviolet-A irradiation and a combination of these two techniques were applied to a non-catalytic aqueous system containing 2,4,6-trichlorophenol (TCP) to study the effectiveness of sonolytic, photolytic and sonophotolytic oxidation processes in the degradation of TCP. The operating parameters for the horn-type sonicator and the UV-A lamp were kept constant along with the solution temperature but the TCP concentration was varied from 30 to 90 ppm. A first-order kinetic rate model was used to study the synergistic effect of the sonophotodegradation process. It was found that at a lower TCP concentration of 30 ppm, sonophotodegradation exhibited a synergistic effect but at a TCP concentration of 70 ppm and higher, sonophotodegradation resulted in an antagonistic effect. The synergistic effect was explained in terms of an increase in the ·OH radical formation by the combined process complemented by the photolysis of H2O2 formed by sonolysis. In contrast, the antagonistic effect was explained in terms of the combined effect of viscosity increase resulting in the reduction of the cavitation efficiency and degradation rate, and by considering the dynamics of bubble growth and implosion. 2015-01-01T00:00:00Z Text Journal contribution 2134/19050 https://figshare.com/articles/journal_contribution/Sonolysis_photolysis_and_sequential_sonophotolysis_for_the_degradation_of_2_4_6-Trichlorophenol_the_effect_of_solution_concentration/9244760 CC BY-NC-ND 4.0
institution	Loughborough University
collection	Figshare
topic	Chemical engineering not elsewhere classified Photolysis Sonolysis Sonophotolysis 2,4,6-Trichlorophenol Chemical Engineering not elsewhere classified
spellingShingle	Chemical engineering not elsewhere classified Photolysis Sonolysis Sonophotolysis 2,4,6-Trichlorophenol Chemical Engineering not elsewhere classified Collin G. Joseph Gianluca Li-Puma Awang Bono Yun Hin Taufiq-Yap Duduku Krishnaiah Sonolysis, photolysis, and sequential sonophotolysis for the degradation of 2,4,6-Trichlorophenol: the effect of solution concentration
description	Ultrasonic sound waves, ultraviolet-A irradiation and a combination of these two techniques were applied to a non-catalytic aqueous system containing 2,4,6-trichlorophenol (TCP) to study the effectiveness of sonolytic, photolytic and sonophotolytic oxidation processes in the degradation of TCP. The operating parameters for the horn-type sonicator and the UV-A lamp were kept constant along with the solution temperature but the TCP concentration was varied from 30 to 90 ppm. A first-order kinetic rate model was used to study the synergistic effect of the sonophotodegradation process. It was found that at a lower TCP concentration of 30 ppm, sonophotodegradation exhibited a synergistic effect but at a TCP concentration of 70 ppm and higher, sonophotodegradation resulted in an antagonistic effect. The synergistic effect was explained in terms of an increase in the ·OH radical formation by the combined process complemented by the photolysis of H2O2 formed by sonolysis. In contrast, the antagonistic effect was explained in terms of the combined effect of viscosity increase resulting in the reduction of the cavitation efficiency and degradation rate, and by considering the dynamics of bubble growth and implosion.
format	Default Article
author	Collin G. Joseph Gianluca Li-Puma Awang Bono Yun Hin Taufiq-Yap Duduku Krishnaiah
author_facet	Collin G. Joseph Gianluca Li-Puma Awang Bono Yun Hin Taufiq-Yap Duduku Krishnaiah
author_sort	Collin G. Joseph (7130177)
title	Sonolysis, photolysis, and sequential sonophotolysis for the degradation of 2,4,6-Trichlorophenol: the effect of solution concentration
title_short	Sonolysis, photolysis, and sequential sonophotolysis for the degradation of 2,4,6-Trichlorophenol: the effect of solution concentration
title_full	Sonolysis, photolysis, and sequential sonophotolysis for the degradation of 2,4,6-Trichlorophenol: the effect of solution concentration
title_fullStr	Sonolysis, photolysis, and sequential sonophotolysis for the degradation of 2,4,6-Trichlorophenol: the effect of solution concentration
title_full_unstemmed	Sonolysis, photolysis, and sequential sonophotolysis for the degradation of 2,4,6-Trichlorophenol: the effect of solution concentration
title_sort	sonolysis, photolysis, and sequential sonophotolysis for the degradation of 2,4,6-trichlorophenol: the effect of solution concentration
publishDate	2015
url	https://hdl.handle.net/2134/19050
_version_	1798190639055110144

Sonolysis, photolysis, and sequential sonophotolysis for the degradation of 2,4,6-Trichlorophenol: the effect of solution concentration

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