Coagulation-flocculation of TiO2 in suspension used in heterogeneous photocatalysis

The coagulation-flocculation of TiO2 in aqueous suspensions of low and intermediate ionic strength was investigated as a function of pH, of addition of aluminum sulfate and of stirring the suspension. This process was maximized after the addition of aluminum sulfate when the mixture was subjected to...

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Autores: Santos, Jonilsom Moraes dos [UNESP], Valente, José Pedro Serra [UNESP], Jorge, Sônia Maria Alves [UNESP], Padilha, Pedro de Magalhães [UNESP], Saeki, Margarida Juri [UNESP], Castro, Gustavo Rocha de [UNESP], Florentino, Ariovaldo de Oliveira [UNESP]
Tipo de recurso: artículo
Estado:Versión publicada
Fecha de publicación:2013
País:Brasil
Institución:Universidade Estadual Paulista (UNESP)
Repositorio:Repositório Institucional da UNESP
Idioma:inglés
OAI Identifier:oai:repositorio.unesp.br:11449/135108
Acceso en línea:http://www.orbital.ufms.br/index.php/Chemistry/article/view/503
http://hdl.handle.net/11449/135108
Access Level:acceso abierto
Palabra clave:Coagulation-flocculation
Aluminum sulfate
Titania
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spelling Coagulation-flocculation of TiO2 in suspension used in heterogeneous photocatalysisCoagulation-flocculationAluminum sulfateTitaniaThe coagulation-flocculation of TiO2 in aqueous suspensions of low and intermediate ionic strength was investigated as a function of pH, of addition of aluminum sulfate and of stirring the suspension. This process was maximized after the addition of aluminum sulfate when the mixture was subjected to rapid and slow shaking and by using tap water at pH 7.0. Under these conditions, the turbidity of a suspension with 0.5 g L-1 of TiO2, which is higher than 4000 NTU, can be lowered to less than 10 NTU in 120 minutes. The filtration of the remaining suspension after coagulation-flocculation was 70 times faster than that of the initial suspension.Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)Fundação do Instituto de Biociências (FUNDIBIO)Universidade Estadual Paulista Júlio de Mesquita Filho (UNESP), Instituto de Biociências de Botucatu (IBB), Departamento de Química e Bioquímica, Botucatu, SP, BrasilUniversidade Estadual Paulista Júlio de Mesquita Filho (UNESP), Instituto de Biociências de Botucatu (IBB), Departamento de Química e Bioquímica, Botucatu, SP, BrasilUniversidade Estadual Paulista (Unesp)2016-03-02T12:59:47Z2016-03-02T12:59:47Z2013info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article233-241application/pdfhttp://www.orbital.ufms.br/index.php/Chemistry/article/view/503Orbital: the Electronic Journal of Chemistry, v. 5, n. 4, p. 233-241, 2013.1984-6428http://hdl.handle.net/11449/135108ISSN1984-6428-2013-05-04-233-241.pdf521615070597250969814486374563910278054122091940560880805899533718029828064368940000-0003-4179-0574Currículo Lattesreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengOrbital: the Electronic Journal of Chemistryinfo:eu-repo/semantics/openAccessSantos, Jonilsom Moraes dos [UNESP]Valente, José Pedro Serra [UNESP]Jorge, Sônia Maria Alves [UNESP]Padilha, Pedro de Magalhães [UNESP]Saeki, Margarida Juri [UNESP]Castro, Gustavo Rocha de [UNESP]Florentino, Ariovaldo de Oliveira [UNESP]2024-10-15T18:08:33Zoai:repositorio.unesp.br:11449/135108Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestrepositoriounesp@unesp.bropendoar:29462024-10-15T18:08:33Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false
dc.title.none.fl_str_mv Coagulation-flocculation of TiO2 in suspension used in heterogeneous photocatalysis
title Coagulation-flocculation of TiO2 in suspension used in heterogeneous photocatalysis
spellingShingle Coagulation-flocculation of TiO2 in suspension used in heterogeneous photocatalysis
Santos, Jonilsom Moraes dos [UNESP]
Coagulation-flocculation
Aluminum sulfate
Titania
title_short Coagulation-flocculation of TiO2 in suspension used in heterogeneous photocatalysis
title_full Coagulation-flocculation of TiO2 in suspension used in heterogeneous photocatalysis
title_fullStr Coagulation-flocculation of TiO2 in suspension used in heterogeneous photocatalysis
title_full_unstemmed Coagulation-flocculation of TiO2 in suspension used in heterogeneous photocatalysis
title_sort Coagulation-flocculation of TiO2 in suspension used in heterogeneous photocatalysis
dc.creator.none.fl_str_mv Santos, Jonilsom Moraes dos [UNESP]
Valente, José Pedro Serra [UNESP]
Jorge, Sônia Maria Alves [UNESP]
Padilha, Pedro de Magalhães [UNESP]
Saeki, Margarida Juri [UNESP]
Castro, Gustavo Rocha de [UNESP]
Florentino, Ariovaldo de Oliveira [UNESP]
author Santos, Jonilsom Moraes dos [UNESP]
author_facet Santos, Jonilsom Moraes dos [UNESP]
Valente, José Pedro Serra [UNESP]
Jorge, Sônia Maria Alves [UNESP]
Padilha, Pedro de Magalhães [UNESP]
Saeki, Margarida Juri [UNESP]
Castro, Gustavo Rocha de [UNESP]
Florentino, Ariovaldo de Oliveira [UNESP]
author_role author
author2 Valente, José Pedro Serra [UNESP]
Jorge, Sônia Maria Alves [UNESP]
Padilha, Pedro de Magalhães [UNESP]
Saeki, Margarida Juri [UNESP]
Castro, Gustavo Rocha de [UNESP]
Florentino, Ariovaldo de Oliveira [UNESP]
author2_role author
author
author
author
author
author
dc.contributor.none.fl_str_mv Universidade Estadual Paulista (Unesp)
dc.subject.por.fl_str_mv Coagulation-flocculation
Aluminum sulfate
Titania
topic Coagulation-flocculation
Aluminum sulfate
Titania
description The coagulation-flocculation of TiO2 in aqueous suspensions of low and intermediate ionic strength was investigated as a function of pH, of addition of aluminum sulfate and of stirring the suspension. This process was maximized after the addition of aluminum sulfate when the mixture was subjected to rapid and slow shaking and by using tap water at pH 7.0. Under these conditions, the turbidity of a suspension with 0.5 g L-1 of TiO2, which is higher than 4000 NTU, can be lowered to less than 10 NTU in 120 minutes. The filtration of the remaining suspension after coagulation-flocculation was 70 times faster than that of the initial suspension.
publishDate 2013
dc.date.none.fl_str_mv 2013
2016-03-02T12:59:47Z
2016-03-02T12:59:47Z
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://www.orbital.ufms.br/index.php/Chemistry/article/view/503
Orbital: the Electronic Journal of Chemistry, v. 5, n. 4, p. 233-241, 2013.
1984-6428
http://hdl.handle.net/11449/135108
ISSN1984-6428-2013-05-04-233-241.pdf
5216150705972509
6981448637456391
0278054122091940
5608808058995337
1802982806436894
0000-0003-4179-0574
url http://www.orbital.ufms.br/index.php/Chemistry/article/view/503
http://hdl.handle.net/11449/135108
identifier_str_mv Orbital: the Electronic Journal of Chemistry, v. 5, n. 4, p. 233-241, 2013.
1984-6428
ISSN1984-6428-2013-05-04-233-241.pdf
5216150705972509
6981448637456391
0278054122091940
5608808058995337
1802982806436894
0000-0003-4179-0574
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv Orbital: the Electronic Journal of Chemistry
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv 233-241
application/pdf
dc.source.none.fl_str_mv Currículo Lattes
reponame:Repositório Institucional da UNESP
instname:Universidade Estadual Paulista (UNESP)
instacron:UNESP
instname_str Universidade Estadual Paulista (UNESP)
instacron_str UNESP
institution UNESP
reponame_str Repositório Institucional da UNESP
collection Repositório Institucional da UNESP
repository.name.fl_str_mv Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)
repository.mail.fl_str_mv repositoriounesp@unesp.br
_version_ 1853672135404290048
score 15.300724

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