Photocatalytic degradation of Orange II dye using Zeolite X-Fe catalyst synthesized from coal fly ash

Abstract. The degradation of Orange II dye (OII) by a heterogeneous photoFenton process using Fe catalysts supported on zeolite was studied. Zeolite X was synthesized by hydrothermal treatment from fly ash, which is a solid waste from the thermoelectric company, Termotasajero S.A, located in Norte d...

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Autores:
Guerra Núñez, María Margarita
Tipo de recurso:
Fecha de publicación:
2016
Institución:
Universidad Nacional de Colombia
Repositorio:
Universidad Nacional de Colombia
Idioma:
spa
OAI Identifier:
oai:repositorio.unal.edu.co:unal/57786
Acceso en línea:
https://repositorio.unal.edu.co/handle/unal/57786
http://bdigital.unal.edu.co/54201/
Palabra clave:
66 Ingeniería química y Tecnologías relacionadas/ Chemical engineering
PhotoFenton
Orange II
Zeolite X-Fe catalysts
H2O2
Box Behnken design
Fermi´s equation
FotoFenton
Naranja ácido 7
Catalizadores Zeolita-Fe
Dseño Box Behnken
Ecuación de Fermi
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openAccess
License
Atribución-NoComercial 4.0 Internacional
id UNACIONAL2_52e1e60a12bd1e472ac9643cb69b43dc
oai_identifier_str oai:repositorio.unal.edu.co:unal/57786
network_acronym_str UNACIONAL2
network_name_str Universidad Nacional de Colombia
repository_id_str
dc.title.spa.fl_str_mv Photocatalytic degradation of Orange II dye using Zeolite X-Fe catalyst synthesized from coal fly ash
title Photocatalytic degradation of Orange II dye using Zeolite X-Fe catalyst synthesized from coal fly ash
spellingShingle Photocatalytic degradation of Orange II dye using Zeolite X-Fe catalyst synthesized from coal fly ash
66 Ingeniería química y Tecnologías relacionadas/ Chemical engineering
PhotoFenton
Orange II
Zeolite X-Fe catalysts
H2O2
Box Behnken design
Fermi´s equation
FotoFenton
Naranja ácido 7
Catalizadores Zeolita-Fe
Dseño Box Behnken
Ecuación de Fermi
title_short Photocatalytic degradation of Orange II dye using Zeolite X-Fe catalyst synthesized from coal fly ash
title_full Photocatalytic degradation of Orange II dye using Zeolite X-Fe catalyst synthesized from coal fly ash
title_fullStr Photocatalytic degradation of Orange II dye using Zeolite X-Fe catalyst synthesized from coal fly ash
title_full_unstemmed Photocatalytic degradation of Orange II dye using Zeolite X-Fe catalyst synthesized from coal fly ash
title_sort Photocatalytic degradation of Orange II dye using Zeolite X-Fe catalyst synthesized from coal fly ash
dc.creator.fl_str_mv Guerra Núñez, María Margarita
dc.contributor.author.spa.fl_str_mv Guerra Núñez, María Margarita
dc.contributor.spa.fl_str_mv Ramirez Franco, José Herney
dc.subject.ddc.spa.fl_str_mv 66 Ingeniería química y Tecnologías relacionadas/ Chemical engineering
topic 66 Ingeniería química y Tecnologías relacionadas/ Chemical engineering
PhotoFenton
Orange II
Zeolite X-Fe catalysts
H2O2
Box Behnken design
Fermi´s equation
FotoFenton
Naranja ácido 7
Catalizadores Zeolita-Fe
Dseño Box Behnken
Ecuación de Fermi
dc.subject.proposal.spa.fl_str_mv PhotoFenton
Orange II
Zeolite X-Fe catalysts
H2O2
Box Behnken design
Fermi´s equation
FotoFenton
Naranja ácido 7
Catalizadores Zeolita-Fe
Dseño Box Behnken
Ecuación de Fermi
description Abstract. The degradation of Orange II dye (OII) by a heterogeneous photoFenton process using Fe catalysts supported on zeolite was studied. Zeolite X was synthesized by hydrothermal treatment from fly ash, which is a solid waste from the thermoelectric company, Termotasajero S.A, located in Norte de Santander. The reported synthesis methodology was optimized, evaluating aging and time of hydrothermal treatment. The synthetic zeolite, with high BET surface area, was modified by a impregnation process to deposite different amounts of iron. Iron nitrate nonahydrated, Fe(NO3)3.9H2O, was the precursor salt and the prepared catalyst had 8.1 wt% y 10.3 wt% of Fe. The support and catalysts were characterized by Xray diffraction (XRD), N2 adsorption/desorption, X-ray fluorescence (XRF), Thermogravimetric analysis (TGA) and Scanning Electron Microscopy (SEM). The effect of the initial concentrations of OII and H2O2, and the iron load in the support on the degradation rate of OII was investigated by carrying out experiments in a batch reactor and to a fixed pH value. The experiments were carried out according to an experimental response surface design and the OII concentration histories (i.e., concentration evolution along reaction time) were studied by UV spectrophotometry at a wavelength of 486 nm. The dye photodegradation was described by a simple semi-empirical kinetic model, based on the Fermi’s equation. The model was fitted to the dye concentration histories, being the kinetic parameters determined by nonlinear regression. The catalysts showed very good catalytic performances, with color degradations degrees as high as 90% after 3 hours. The initial concentration of OII was the most influential variable in the dye degradation and the iron leaching from the support was negligible, allowing the use of the catalyst in consecutive reaction cycles. The contribution in color photodegradation due to the presence of 1 wt% TiO2 was investigated.
publishDate 2016
dc.date.issued.spa.fl_str_mv 2016-08-12
dc.date.accessioned.spa.fl_str_mv 2019-07-02T13:14:24Z
dc.date.available.spa.fl_str_mv 2019-07-02T13:14:24Z
dc.type.spa.fl_str_mv Trabajo de grado - Maestría
dc.type.driver.spa.fl_str_mv info:eu-repo/semantics/masterThesis
dc.type.version.spa.fl_str_mv info:eu-repo/semantics/acceptedVersion
dc.type.content.spa.fl_str_mv Text
dc.type.redcol.spa.fl_str_mv http://purl.org/redcol/resource_type/TM
status_str acceptedVersion
dc.identifier.uri.none.fl_str_mv https://repositorio.unal.edu.co/handle/unal/57786
dc.identifier.eprints.spa.fl_str_mv http://bdigital.unal.edu.co/54201/
url https://repositorio.unal.edu.co/handle/unal/57786
http://bdigital.unal.edu.co/54201/
dc.language.iso.spa.fl_str_mv spa
language spa
dc.relation.ispartof.spa.fl_str_mv Universidad Nacional de Colombia Sede Bogotá Facultad de Ingeniería Departamento de Ingeniería Química y Ambiental Ingeniería Química
Ingeniería Química
dc.relation.references.spa.fl_str_mv Guerra Núñez, María Margarita (2016) Photocatalytic degradation of Orange II dye using Zeolite X-Fe catalyst synthesized from coal fly ash. Maestría thesis, Universidad Nacional de Colombia - Sede Bogotá.
dc.rights.spa.fl_str_mv Derechos reservados - Universidad Nacional de Colombia
dc.rights.coar.fl_str_mv http://purl.org/coar/access_right/c_abf2
dc.rights.license.spa.fl_str_mv Atribución-NoComercial 4.0 Internacional
dc.rights.uri.spa.fl_str_mv http://creativecommons.org/licenses/by-nc/4.0/
dc.rights.accessrights.spa.fl_str_mv info:eu-repo/semantics/openAccess
rights_invalid_str_mv Atribución-NoComercial 4.0 Internacional
Derechos reservados - Universidad Nacional de Colombia
http://creativecommons.org/licenses/by-nc/4.0/
http://purl.org/coar/access_right/c_abf2
eu_rights_str_mv openAccess
dc.format.mimetype.spa.fl_str_mv application/pdf
institution Universidad Nacional de Colombia
bitstream.url.fl_str_mv https://repositorio.unal.edu.co/bitstream/unal/57786/1/mariamargaritaguerranu%c3%b1ez.2016.pdf
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repository.name.fl_str_mv Repositorio Institucional Universidad Nacional de Colombia
repository.mail.fl_str_mv repositorio_nal@unal.edu.co
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spelling Atribución-NoComercial 4.0 InternacionalDerechos reservados - Universidad Nacional de Colombiahttp://creativecommons.org/licenses/by-nc/4.0/info:eu-repo/semantics/openAccesshttp://purl.org/coar/access_right/c_abf2Ramirez Franco, José HerneyGuerra Núñez, María Margarita47938145-ea0a-43ea-89a4-270b7e3d0c863002019-07-02T13:14:24Z2019-07-02T13:14:24Z2016-08-12https://repositorio.unal.edu.co/handle/unal/57786http://bdigital.unal.edu.co/54201/Abstract. The degradation of Orange II dye (OII) by a heterogeneous photoFenton process using Fe catalysts supported on zeolite was studied. Zeolite X was synthesized by hydrothermal treatment from fly ash, which is a solid waste from the thermoelectric company, Termotasajero S.A, located in Norte de Santander. The reported synthesis methodology was optimized, evaluating aging and time of hydrothermal treatment. The synthetic zeolite, with high BET surface area, was modified by a impregnation process to deposite different amounts of iron. Iron nitrate nonahydrated, Fe(NO3)3.9H2O, was the precursor salt and the prepared catalyst had 8.1 wt% y 10.3 wt% of Fe. The support and catalysts were characterized by Xray diffraction (XRD), N2 adsorption/desorption, X-ray fluorescence (XRF), Thermogravimetric analysis (TGA) and Scanning Electron Microscopy (SEM). The effect of the initial concentrations of OII and H2O2, and the iron load in the support on the degradation rate of OII was investigated by carrying out experiments in a batch reactor and to a fixed pH value. The experiments were carried out according to an experimental response surface design and the OII concentration histories (i.e., concentration evolution along reaction time) were studied by UV spectrophotometry at a wavelength of 486 nm. The dye photodegradation was described by a simple semi-empirical kinetic model, based on the Fermi’s equation. The model was fitted to the dye concentration histories, being the kinetic parameters determined by nonlinear regression. The catalysts showed very good catalytic performances, with color degradations degrees as high as 90% after 3 hours. The initial concentration of OII was the most influential variable in the dye degradation and the iron leaching from the support was negligible, allowing the use of the catalyst in consecutive reaction cycles. The contribution in color photodegradation due to the presence of 1 wt% TiO2 was investigated.Se estudió la degradación del colorante industrial Naranja ácido 7 mediante el proceso fotocatalítico fotoFenton usando catalizadores soportados en una zeolita con diferentes cargas de hierro. La zeolita X se sintetizó por medio de un tratamiento hidrotérmico a partir de cenizas volantes de carbón que constituye un residuo mineral de la Termoeléctrica Termotasajero S.A. La metodología de síntesis reportada en la literatura se optimizó con la evaluación de los tiempos de tratamiento hidrotérmico y añejamiento. La zeolita sintética, de alta área superficial BET, fue modificada mediante un proceso de impregnación húmeda con el fin de depositar diferentes cantidades de hierro. Nitrato de hierro nonahidratado, Fe(NO3)3.9H2O, constituyó la sal precursora y los catalizadors preparados tuvieron 8.1 wt% y 10.3 wt% of Fe. Tanto el soporte como los catalizadores se caracterizaron por varias técnicas como difracción de rayos X (XRD), adsorción/desorción de N2, fluorescencia de rayos X (XRF), análisis termogravimétrico (TGA) y microscopia electrónica de barrido (SEM). Durante la degradación del colorante se investigaron los efectos de las concentraciones iniciales del colorante y H2O2 en la velocidad de degradación del colorante, así como de la carga de Fe en un reactor por lotes y a un pH fijo. Se utilizó un diseño experimental de superficie de respuesta para medir la acción de las variables en la evolución de la concentración del contaminante a través del tiempo, la cual fue seguida por espectrofotometría UV a una longitud de onda de 486nm que corresponde a la longitud de onda característica del colorante estudiado. La fotodegradación del colorante fue descrita por un modelo cinético semi-empirico basado en la ecuación de Fermi. Los catalizadores preparados mostraron buen rendimiento catalítico en la degradación de color obteniendo degradaciones mayores al 90% en 3 horas. Según la respuesta del diseño, la concentración inicial del colorante naranja ácido 7 fue la variable de mayor influencia y además la lixiaviación de hierro fue despreciable, lo que demuestra la estabilidad de los catalizadores. Se investigó el aporte que tiene la presencia de 1 wt% de TiO2 en la degradación del color.Maestríaapplication/pdfspaUniversidad Nacional de Colombia Sede Bogotá Facultad de Ingeniería Departamento de Ingeniería Química y Ambiental Ingeniería QuímicaIngeniería QuímicaGuerra Núñez, María Margarita (2016) Photocatalytic degradation of Orange II dye using Zeolite X-Fe catalyst synthesized from coal fly ash. Maestría thesis, Universidad Nacional de Colombia - Sede Bogotá.66 Ingeniería química y Tecnologías relacionadas/ Chemical engineeringPhotoFentonOrange IIZeolite X-Fe catalystsH2O2Box Behnken designFermi´s equationFotoFentonNaranja ácido 7Catalizadores Zeolita-FeDseño Box BehnkenEcuación de FermiPhotocatalytic degradation of Orange II dye using Zeolite X-Fe catalyst synthesized from coal fly ashTrabajo de grado - Maestríainfo:eu-repo/semantics/masterThesisinfo:eu-repo/semantics/acceptedVersionTexthttp://purl.org/redcol/resource_type/TMORIGINALmariamargaritaguerranuñez.2016.pdfapplication/pdf4435224https://repositorio.unal.edu.co/bitstream/unal/57786/1/mariamargaritaguerranu%c3%b1ez.2016.pdf08c85de9d390a9816ad66f4453dc699fMD51THUMBNAILmariamargaritaguerranuñez.2016.pdf.jpgmariamargaritaguerranuñez.2016.pdf.jpgGenerated Thumbnailimage/jpeg5658https://repositorio.unal.edu.co/bitstream/unal/57786/2/mariamargaritaguerranu%c3%b1ez.2016.pdf.jpg3a3375ab85b19ec51e20d6f5905bf2f8MD52unal/57786oai:repositorio.unal.edu.co:unal/577862024-03-29 23:08:55.265Repositorio Institucional Universidad Nacional de Colombiarepositorio_nal@unal.edu.co