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...
| Autores: | , , , , , , |
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| 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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BR_eec2baf8452efee2e48bbda68002ebb6 |
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oai:repositorio.unesp.br:11449/135108 |
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BR |
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Brasil |
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Coagulation-flocculation of TiO2 in suspension used in heterogeneous photocatalysis 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] Coagulation-flocculation Aluminum sulfate Titania 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. 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, Brasil 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 |
| 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 |
| 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 |
| topic |
Coagulation-flocculation Aluminum sulfate Titania |
| topic_facet |
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 |
| format |
article |
| status_str |
publishedVersion |
| url |
http://www.orbital.ufms.br/index.php/Chemistry/article/view/503 http://hdl.handle.net/11449/135108 |
| language |
eng |
| eu_rights_str_mv |
openAccess |
| institution |
UNESP |
| collection |
Repositório Institucional da UNESP |
| reponame_str |
Repositório Institucional da UNESP |
| instname_str |
Universidade Estadual Paulista (UNESP) |
| _version_ |
1878429408481509376 |
| publishDateSort |
2013 |
| author_browse |
Castro, Gustavo Rocha de [UNESP] Florentino, Ariovaldo de Oliveira [UNESP] Jorge, Sônia Maria Alves [UNESP] Padilha, Pedro de Magalhães [UNESP] Saeki, Margarida Juri [UNESP] Santos, Jonilsom Moraes dos [UNESP] Valente, José Pedro Serra [UNESP] |
| score |
6,924472 |