OPTIMIZATION OF PHOTOCATALYTIC DECOLORIZATION OF THE AZO DYE DIRECT ORANGE 34 BY STATISTICAL EXPERIMENTAL DESIGN

The photodecolorization of the azo dye Direct Orange 34 (DO34) was investigated in TiO2 aqueous suspensions with artificial irradiation at 30°C. The experimental conditions were optimized by a 2(5) factorial design, using the decolorization percentage after 240 min irradiation as the response. The f...

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Autores principales:	NIEHUES,EDUARDO, SCARMÍNIO,IEDA S, TAKASHIMA,KEIKO
Lenguaje:	English
Publicado:	Sociedad Chilena de Química 2010
Materias:	photocatalytic decolorization Direct Orange 34 TiO2 oxidant factorial design
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-97072010000300009
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spelling	oai:scielo:S0717-970720100003000092011-01-25OPTIMIZATION OF PHOTOCATALYTIC DECOLORIZATION OF THE AZO DYE DIRECT ORANGE 34 BY STATISTICAL EXPERIMENTAL DESIGNNIEHUES,EDUARDOSCARMÍNIO,IEDA STAKASHIMA,KEIKO photocatalytic decolorization Direct Orange 34 TiO2 oxidant factorial design The photodecolorization of the azo dye Direct Orange 34 (DO34) was investigated in TiO2 aqueous suspensions with artificial irradiation at 30°C. The experimental conditions were optimized by a 2(5) factorial design, using the decolorization percentage after 240 min irradiation as the response. The five factors considered were DO34 and TiO2 concentrations, stirring speed, air saturation, and adsorption time. The addition of hydrogen peroxide and sodium periodate as oxidants increased the decolorization rate.info:eu-repo/semantics/openAccessSociedad Chilena de QuímicaJournal of the Chilean Chemical Society v.55 n.3 20102010-01-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-97072010000300009en10.4067/S0717-97072010000300009
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	photocatalytic decolorization Direct Orange 34 TiO2 oxidant factorial design
spellingShingle	photocatalytic decolorization Direct Orange 34 TiO2 oxidant factorial design NIEHUES,EDUARDO SCARMÍNIO,IEDA S TAKASHIMA,KEIKO OPTIMIZATION OF PHOTOCATALYTIC DECOLORIZATION OF THE AZO DYE DIRECT ORANGE 34 BY STATISTICAL EXPERIMENTAL DESIGN
description	The photodecolorization of the azo dye Direct Orange 34 (DO34) was investigated in TiO2 aqueous suspensions with artificial irradiation at 30°C. The experimental conditions were optimized by a 2(5) factorial design, using the decolorization percentage after 240 min irradiation as the response. The five factors considered were DO34 and TiO2 concentrations, stirring speed, air saturation, and adsorption time. The addition of hydrogen peroxide and sodium periodate as oxidants increased the decolorization rate.
author	NIEHUES,EDUARDO SCARMÍNIO,IEDA S TAKASHIMA,KEIKO
author_facet	NIEHUES,EDUARDO SCARMÍNIO,IEDA S TAKASHIMA,KEIKO
author_sort	NIEHUES,EDUARDO
title	OPTIMIZATION OF PHOTOCATALYTIC DECOLORIZATION OF THE AZO DYE DIRECT ORANGE 34 BY STATISTICAL EXPERIMENTAL DESIGN
title_short	OPTIMIZATION OF PHOTOCATALYTIC DECOLORIZATION OF THE AZO DYE DIRECT ORANGE 34 BY STATISTICAL EXPERIMENTAL DESIGN
title_full	OPTIMIZATION OF PHOTOCATALYTIC DECOLORIZATION OF THE AZO DYE DIRECT ORANGE 34 BY STATISTICAL EXPERIMENTAL DESIGN
title_fullStr	OPTIMIZATION OF PHOTOCATALYTIC DECOLORIZATION OF THE AZO DYE DIRECT ORANGE 34 BY STATISTICAL EXPERIMENTAL DESIGN
title_full_unstemmed	OPTIMIZATION OF PHOTOCATALYTIC DECOLORIZATION OF THE AZO DYE DIRECT ORANGE 34 BY STATISTICAL EXPERIMENTAL DESIGN
title_sort	optimization of photocatalytic decolorization of the azo dye direct orange 34 by statistical experimental design
publisher	Sociedad Chilena de Química
publishDate	2010
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-97072010000300009
work_keys_str_mv	AT niehueseduardo optimizationofphotocatalyticdecolorizationoftheazodyedirectorange34bystatisticalexperimentaldesign AT scarminioiedas optimizationofphotocatalyticdecolorizationoftheazodyedirectorange34bystatisticalexperimentaldesign AT takashimakeiko optimizationofphotocatalyticdecolorizationoftheazodyedirectorange34bystatisticalexperimentaldesign
_version_	1718445431509221376

OPTIMIZATION OF PHOTOCATALYTIC DECOLORIZATION OF THE AZO DYE DIRECT ORANGE 34 BY STATISTICAL EXPERIMENTAL DESIGN

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