Removal of Cr(VI) and Humic Acid by Heterogeneous Photocatalysis in a Laboratory Reactor and a Pilot Reactor

Autores
Cid, Lucía del Carmen Isabel; Grande, Maria del Carmen; Acosta, Eduardo Omar; Ginzberg, Berta
Año de publicación
2012
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
In this work heterogeneous photocatalysis has been used in order to eliminate Cr(VI) as well as humic acid in a laboratory reactor and in a pilot reactor. The reactors have been constructed with proportional geometric properties and similar nominal powers. In the laboratory reactor a kinetic study of the reduction of Cr(VI) to Cr(III) has been done for different concentrations of the catalyst at pH 4 and 7. The influence in the increase of the reduction of chromium(VI) that is obtained by the presence of humic acid has been determined. It has been verified that all the reactions possess pseudo-first-order kinetics, and the values of the apparent kinetic constants obtained for all systems studied have been compared. These values have allowed selection of the values of the variables to be used in the pilot reactor as it is desired to eliminate Cr(VI) by reduction and precipitation and humic acid by oxidation. A comparative evaluation of the efficiencies of the reactors was based on kinetic determinations.
Fil: Cid, Lucía del Carmen Isabel. Universidad de Buenos Aires. Facultad de Ingeniería. Departamento de Química; Argentina
Fil: Grande, Maria del Carmen. Universidad de Buenos Aires. Facultad de Ingeniería. Departamento de Química; Argentina
Fil: Acosta, Eduardo Omar. Universidad de Buenos Aires. Facultad de Ingeniería. Departamento de Física; Argentina
Fil: Ginzberg, Berta. Universidad de Buenos Aires. Facultad de Ingeniería. Departamento de Física; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Materia
HETEROGENEOUS PHOTOCATALYSIS
KINETICS
LABORATORY REACTOR
PILOT REACTOR
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/273471
Acceder
id CONICETDig_f21dbf3c284c835f674e7d35c600dc47
oai_identifier_str oai:ri.conicet.gov.ar:11336/273471
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Removal of Cr(VI) and Humic Acid by Heterogeneous Photocatalysis in a Laboratory Reactor and a Pilot ReactorCid, Lucía del Carmen IsabelGrande, Maria del CarmenAcosta, Eduardo OmarGinzberg, BertaHETEROGENEOUS PHOTOCATALYSISKINETICSLABORATORY REACTORPILOT REACTORhttps://purl.org/becyt/ford/2.4https://purl.org/becyt/ford/2In this work heterogeneous photocatalysis has been used in order to eliminate Cr(VI) as well as humic acid in a laboratory reactor and in a pilot reactor. The reactors have been constructed with proportional geometric properties and similar nominal powers. In the laboratory reactor a kinetic study of the reduction of Cr(VI) to Cr(III) has been done for different concentrations of the catalyst at pH 4 and 7. The influence in the increase of the reduction of chromium(VI) that is obtained by the presence of humic acid has been determined. It has been verified that all the reactions possess pseudo-first-order kinetics, and the values of the apparent kinetic constants obtained for all systems studied have been compared. These values have allowed selection of the values of the variables to be used in the pilot reactor as it is desired to eliminate Cr(VI) by reduction and precipitation and humic acid by oxidation. A comparative evaluation of the efficiencies of the reactors was based on kinetic determinations.Fil: Cid, Lucía del Carmen Isabel. Universidad de Buenos Aires. Facultad de Ingeniería. Departamento de Química; ArgentinaFil: Grande, Maria del Carmen. Universidad de Buenos Aires. Facultad de Ingeniería. Departamento de Química; ArgentinaFil: Acosta, Eduardo Omar. Universidad de Buenos Aires. Facultad de Ingeniería. Departamento de Física; ArgentinaFil: Ginzberg, Berta. Universidad de Buenos Aires. Facultad de Ingeniería. Departamento de Física; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaAmerican Chemical Society2012-07info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/273471Cid, Lucía del Carmen Isabel; Grande, Maria del Carmen; Acosta, Eduardo Omar; Ginzberg, Berta; Removal of Cr(VI) and Humic Acid by Heterogeneous Photocatalysis in a Laboratory Reactor and a Pilot Reactor; American Chemical Society; Industrial & Engineering Chemical Research; 51; 28; 7-2012; 9468-94740888-5885CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://pubs.acs.org/doi/10.1021/ie2010687info:eu-repo/semantics/altIdentifier/doi/10.1021/ie2010687info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-11-05T09:54:12Zoai:ri.conicet.gov.ar:11336/273471instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-11-05 09:54:13.074CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Removal of Cr(VI) and Humic Acid by Heterogeneous Photocatalysis in a Laboratory Reactor and a Pilot Reactor
title Removal of Cr(VI) and Humic Acid by Heterogeneous Photocatalysis in a Laboratory Reactor and a Pilot Reactor
spellingShingle Removal of Cr(VI) and Humic Acid by Heterogeneous Photocatalysis in a Laboratory Reactor and a Pilot Reactor
Cid, Lucía del Carmen Isabel
HETEROGENEOUS PHOTOCATALYSIS
KINETICS
LABORATORY REACTOR
PILOT REACTOR
title_short Removal of Cr(VI) and Humic Acid by Heterogeneous Photocatalysis in a Laboratory Reactor and a Pilot Reactor
title_full Removal of Cr(VI) and Humic Acid by Heterogeneous Photocatalysis in a Laboratory Reactor and a Pilot Reactor
title_fullStr Removal of Cr(VI) and Humic Acid by Heterogeneous Photocatalysis in a Laboratory Reactor and a Pilot Reactor
title_full_unstemmed Removal of Cr(VI) and Humic Acid by Heterogeneous Photocatalysis in a Laboratory Reactor and a Pilot Reactor
title_sort Removal of Cr(VI) and Humic Acid by Heterogeneous Photocatalysis in a Laboratory Reactor and a Pilot Reactor
dc.creator.none.fl_str_mv Cid, Lucía del Carmen Isabel
Grande, Maria del Carmen
Acosta, Eduardo Omar
Ginzberg, Berta
author Cid, Lucía del Carmen Isabel
author_facet Cid, Lucía del Carmen Isabel
Grande, Maria del Carmen
Acosta, Eduardo Omar
Ginzberg, Berta
author_role author
author2 Grande, Maria del Carmen
Acosta, Eduardo Omar
Ginzberg, Berta
author2_role author
author
author
dc.subject.none.fl_str_mv HETEROGENEOUS PHOTOCATALYSIS
KINETICS
LABORATORY REACTOR
PILOT REACTOR
topic HETEROGENEOUS PHOTOCATALYSIS
KINETICS
LABORATORY REACTOR
PILOT REACTOR
purl_subject.fl_str_mv https://purl.org/becyt/ford/2.4
https://purl.org/becyt/ford/2
dc.description.none.fl_txt_mv In this work heterogeneous photocatalysis has been used in order to eliminate Cr(VI) as well as humic acid in a laboratory reactor and in a pilot reactor. The reactors have been constructed with proportional geometric properties and similar nominal powers. In the laboratory reactor a kinetic study of the reduction of Cr(VI) to Cr(III) has been done for different concentrations of the catalyst at pH 4 and 7. The influence in the increase of the reduction of chromium(VI) that is obtained by the presence of humic acid has been determined. It has been verified that all the reactions possess pseudo-first-order kinetics, and the values of the apparent kinetic constants obtained for all systems studied have been compared. These values have allowed selection of the values of the variables to be used in the pilot reactor as it is desired to eliminate Cr(VI) by reduction and precipitation and humic acid by oxidation. A comparative evaluation of the efficiencies of the reactors was based on kinetic determinations.
Fil: Cid, Lucía del Carmen Isabel. Universidad de Buenos Aires. Facultad de Ingeniería. Departamento de Química; Argentina
Fil: Grande, Maria del Carmen. Universidad de Buenos Aires. Facultad de Ingeniería. Departamento de Química; Argentina
Fil: Acosta, Eduardo Omar. Universidad de Buenos Aires. Facultad de Ingeniería. Departamento de Física; Argentina
Fil: Ginzberg, Berta. Universidad de Buenos Aires. Facultad de Ingeniería. Departamento de Física; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
description In this work heterogeneous photocatalysis has been used in order to eliminate Cr(VI) as well as humic acid in a laboratory reactor and in a pilot reactor. The reactors have been constructed with proportional geometric properties and similar nominal powers. In the laboratory reactor a kinetic study of the reduction of Cr(VI) to Cr(III) has been done for different concentrations of the catalyst at pH 4 and 7. The influence in the increase of the reduction of chromium(VI) that is obtained by the presence of humic acid has been determined. It has been verified that all the reactions possess pseudo-first-order kinetics, and the values of the apparent kinetic constants obtained for all systems studied have been compared. These values have allowed selection of the values of the variables to be used in the pilot reactor as it is desired to eliminate Cr(VI) by reduction and precipitation and humic acid by oxidation. A comparative evaluation of the efficiencies of the reactors was based on kinetic determinations.
publishDate 2012
dc.date.none.fl_str_mv 2012-07
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/11336/273471
Cid, Lucía del Carmen Isabel; Grande, Maria del Carmen; Acosta, Eduardo Omar; Ginzberg, Berta; Removal of Cr(VI) and Humic Acid by Heterogeneous Photocatalysis in a Laboratory Reactor and a Pilot Reactor; American Chemical Society; Industrial & Engineering Chemical Research; 51; 28; 7-2012; 9468-9474
0888-5885
CONICET Digital
CONICET
url http://hdl.handle.net/11336/273471
identifier_str_mv Cid, Lucía del Carmen Isabel; Grande, Maria del Carmen; Acosta, Eduardo Omar; Ginzberg, Berta; Removal of Cr(VI) and Humic Acid by Heterogeneous Photocatalysis in a Laboratory Reactor and a Pilot Reactor; American Chemical Society; Industrial & Engineering Chemical Research; 51; 28; 7-2012; 9468-9474
0888-5885
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/url/https://pubs.acs.org/doi/10.1021/ie2010687
info:eu-repo/semantics/altIdentifier/doi/10.1021/ie2010687
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
application/pdf
application/pdf
application/pdf
dc.publisher.none.fl_str_mv American Chemical Society
publisher.none.fl_str_mv American Chemical Society
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
collection CONICET Digital (CONICET)
instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
repository.name.fl_str_mv CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas
repository.mail.fl_str_mv dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar
_version_ 1847977298088689664
score 13.087074

Publicaciones similares