Optimization of TiO2-P25 photocatalyst dose and H2O2 concentration for advanced photo-oxidation using smartphone-based colorimetry

Color images taken by a smartphone camera were used to estimate the rate of advanced photo-oxidation reaction of Direct Red 23 (DR23) azo dye as a model organic pollutant. The red, green, blue color coordinates were tested to quantify the dye. Images of the reaction mixture were taken at specified i...

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Autores principales:	Nazarii Danyliuk, Tetiana Tatarchuk, Karthik Kannan, Alexander Shyichuk
Formato:	article
Lenguaje:	EN
Publicado:	IWA Publishing 2021
Materias:	dye photocatalysis smartphone titania two-factor experiment Environmental technology. Sanitary engineering TD1-1066
Acceso en línea:	https://doaj.org/article/598877c305ab48cfb402c60fc15cfd88
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spelling	oai:doaj.org-article:598877c305ab48cfb402c60fc15cfd882021-11-06T11:14:00ZOptimization of TiO2-P25 photocatalyst dose and H2O2 concentration for advanced photo-oxidation using smartphone-based colorimetry0273-12231996-973210.2166/wst.2021.236https://doaj.org/article/598877c305ab48cfb402c60fc15cfd882021-07-01T00:00:00Zhttp://wst.iwaponline.com/content/84/2/469https://doaj.org/toc/0273-1223https://doaj.org/toc/1996-9732Color images taken by a smartphone camera were used to estimate the rate of advanced photo-oxidation reaction of Direct Red 23 (DR23) azo dye as a model organic pollutant. The red, green, blue color coordinates were tested to quantify the dye. Images of the reaction mixture were taken at specified intervals to obtain kinetic lines and reaction rate constants. Both the reaction rate constant and the final degree of degradation were plotted as functions of the photocatalyst dose and the concentration of H2O2. The smartphone measurements are fully consistent with the reference spectrophotometry data. The maximum degradation efficiency of the DR23 dye was recorded at C0(H2O2) = 2.5 mM and photocatalyst dose equal to 1.0 mg/L. Higher H2O2 concentrations reduce the degradation rate as a result of the side reaction of H2O2 with OH radicals. A two-factor experimental design was used to study the effects of photocatalyst dose and H2O2 concentration with five and seven levels, respectively. The analysis of variance results indicated that the concentration of H2O2 had the greater influence. The smartphone provides quick and easy measurement of the photodegradation rate directly in the solutions without sampling. The proposed approach can be applied under field conditions in wastewater treatment plants. Highlights Smartphone-based colorimetry was used to determine the DR23 dye.; Dye decomposition rate was used to optimize TiO2 dose and H2O2 concentration.; The proposed approach can be useful in optimizing advanced photo-oxidation processes.;Nazarii DanyliukTetiana TatarchukKarthik KannanAlexander ShyichukIWA Publishingarticledyephotocatalysissmartphonetitaniatwo-factor experimentEnvironmental technology. Sanitary engineeringTD1-1066ENWater Science and Technology, Vol 84, Iss 2, Pp 469-483 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	dye photocatalysis smartphone titania two-factor experiment Environmental technology. Sanitary engineering TD1-1066
spellingShingle	dye photocatalysis smartphone titania two-factor experiment Environmental technology. Sanitary engineering TD1-1066 Nazarii Danyliuk Tetiana Tatarchuk Karthik Kannan Alexander Shyichuk Optimization of TiO2-P25 photocatalyst dose and H2O2 concentration for advanced photo-oxidation using smartphone-based colorimetry
description	Color images taken by a smartphone camera were used to estimate the rate of advanced photo-oxidation reaction of Direct Red 23 (DR23) azo dye as a model organic pollutant. The red, green, blue color coordinates were tested to quantify the dye. Images of the reaction mixture were taken at specified intervals to obtain kinetic lines and reaction rate constants. Both the reaction rate constant and the final degree of degradation were plotted as functions of the photocatalyst dose and the concentration of H2O2. The smartphone measurements are fully consistent with the reference spectrophotometry data. The maximum degradation efficiency of the DR23 dye was recorded at C0(H2O2) = 2.5 mM and photocatalyst dose equal to 1.0 mg/L. Higher H2O2 concentrations reduce the degradation rate as a result of the side reaction of H2O2 with OH radicals. A two-factor experimental design was used to study the effects of photocatalyst dose and H2O2 concentration with five and seven levels, respectively. The analysis of variance results indicated that the concentration of H2O2 had the greater influence. The smartphone provides quick and easy measurement of the photodegradation rate directly in the solutions without sampling. The proposed approach can be applied under field conditions in wastewater treatment plants. Highlights Smartphone-based colorimetry was used to determine the DR23 dye.; Dye decomposition rate was used to optimize TiO2 dose and H2O2 concentration.; The proposed approach can be useful in optimizing advanced photo-oxidation processes.;
format	article
author	Nazarii Danyliuk Tetiana Tatarchuk Karthik Kannan Alexander Shyichuk
author_facet	Nazarii Danyliuk Tetiana Tatarchuk Karthik Kannan Alexander Shyichuk
author_sort	Nazarii Danyliuk
title	Optimization of TiO2-P25 photocatalyst dose and H2O2 concentration for advanced photo-oxidation using smartphone-based colorimetry
title_short	Optimization of TiO2-P25 photocatalyst dose and H2O2 concentration for advanced photo-oxidation using smartphone-based colorimetry
title_full	Optimization of TiO2-P25 photocatalyst dose and H2O2 concentration for advanced photo-oxidation using smartphone-based colorimetry
title_fullStr	Optimization of TiO2-P25 photocatalyst dose and H2O2 concentration for advanced photo-oxidation using smartphone-based colorimetry
title_full_unstemmed	Optimization of TiO2-P25 photocatalyst dose and H2O2 concentration for advanced photo-oxidation using smartphone-based colorimetry
title_sort	optimization of tio2-p25 photocatalyst dose and h2o2 concentration for advanced photo-oxidation using smartphone-based colorimetry
publisher	IWA Publishing
publishDate	2021
url	https://doaj.org/article/598877c305ab48cfb402c60fc15cfd88
work_keys_str_mv	AT nazariidanyliuk optimizationoftio2p25photocatalystdoseandh2o2concentrationforadvancedphotooxidationusingsmartphonebasedcolorimetry AT tetianatatarchuk optimizationoftio2p25photocatalystdoseandh2o2concentrationforadvancedphotooxidationusingsmartphonebasedcolorimetry AT karthikkannan optimizationoftio2p25photocatalystdoseandh2o2concentrationforadvancedphotooxidationusingsmartphonebasedcolorimetry AT alexandershyichuk optimizationoftio2p25photocatalystdoseandh2o2concentrationforadvancedphotooxidationusingsmartphonebasedcolorimetry
_version_	1718443731169837056

Optimization of TiO2-P25 photocatalyst dose and H2O2 concentration for advanced photo-oxidation using smartphone-based colorimetry

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