Vinasse treatment using a vegetable-tannin coagulant and photocatalysis - doi: 10.4025/actascitechnol.v35i1.11011
Autor(a) principal: | |
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Data de Publicação: | 2012 |
Outros Autores: | , , , |
Tipo de documento: | Artigo |
Idioma: | por eng |
Título da fonte: | Acta scientiarum. Technology (Online) |
Texto Completo: | http://www.periodicos.uem.br/ojs/index.php/ActaSciTechnol/article/view/11011 |
Resumo: | The large volume of sugar cane vinasse generated by alcohol distillation motivated current treatment to reduce vinasse volume by a concentration process and to eliminate pollutants in the wastewater. The vinasse concentration by the coagulation/flocculation process favored the use of the thickened sludge either for fertilizing purposes or for biogas production. The photocatalysis treatment of the clarified vinasse mineralized pollutants and reduced toxicity, with subsequent water reuse. The first series of coagulation/flocculation experiments were carried out in a jar-test apparatus at room temperature with samples of 200 mL and several coagulant concentrations. In the second series of experiments, photocatalysis tests were performed on the clarified vinasse obtained by coagulation/flocculation under conditions optimized in the first series of experiments. The photocatalysis tests were performed for five consecutive days with UV irradiation, using TiO2-P25 as photocatalyst. Significant reduction of toxicity, consistent with the reduction in chemical oxygen demand (COD), was found when the photocatalysis treatment subsequent to coagulation/flocculation process was employed. Further, 98% reduction of turbidity and 87% reduction of color were obtained by the coagulation/flocculation process. Coupled to the photocatalysis process, significant reductions in absorbance, toxicity and COD (80%) were also achieved. |
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Vinasse treatment using a vegetable-tannin coagulant and photocatalysis - doi: 10.4025/actascitechnol.v35i1.11011vinassecoagulation/flocculationphotocatalysisTiO2vegetable tanninEngenharia QuímicaThe large volume of sugar cane vinasse generated by alcohol distillation motivated current treatment to reduce vinasse volume by a concentration process and to eliminate pollutants in the wastewater. The vinasse concentration by the coagulation/flocculation process favored the use of the thickened sludge either for fertilizing purposes or for biogas production. The photocatalysis treatment of the clarified vinasse mineralized pollutants and reduced toxicity, with subsequent water reuse. The first series of coagulation/flocculation experiments were carried out in a jar-test apparatus at room temperature with samples of 200 mL and several coagulant concentrations. In the second series of experiments, photocatalysis tests were performed on the clarified vinasse obtained by coagulation/flocculation under conditions optimized in the first series of experiments. The photocatalysis tests were performed for five consecutive days with UV irradiation, using TiO2-P25 as photocatalyst. Significant reduction of toxicity, consistent with the reduction in chemical oxygen demand (COD), was found when the photocatalysis treatment subsequent to coagulation/flocculation process was employed. Further, 98% reduction of turbidity and 87% reduction of color were obtained by the coagulation/flocculation process. Coupled to the photocatalysis process, significant reductions in absorbance, toxicity and COD (80%) were also achieved. Universidade Estadual De Maringá2012-08-27info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionCatálise; Coagulação-Floculaçãoapplication/pdfapplication/pdfhttp://www.periodicos.uem.br/ojs/index.php/ActaSciTechnol/article/view/1101110.4025/actascitechnol.v35i1.11011Acta Scientiarum. Technology; Vol 35 No 1 (2013); 89-95Acta Scientiarum. Technology; v. 35 n. 1 (2013); 89-951806-25631807-8664reponame:Acta scientiarum. Technology (Online)instname:Universidade Estadual de Maringá (UEM)instacron:UEMporenghttp://www.periodicos.uem.br/ojs/index.php/ActaSciTechnol/article/view/11011/pdfhttp://www.periodicos.uem.br/ojs/index.php/ActaSciTechnol/article/view/11011/pdf_1Souza, Renata Padilha deGirardi, FranciélleSantana, Veronice SluzarskiFernandes-Machado, Nádia Regina CamargoGimenes, Marcelino Luizinfo:eu-repo/semantics/openAccess2024-05-17T13:03:18Zoai:periodicos.uem.br/ojs:article/11011Revistahttps://www.periodicos.uem.br/ojs/index.php/ActaSciTechnol/indexPUBhttps://www.periodicos.uem.br/ojs/index.php/ActaSciTechnol/oai||actatech@uem.br1807-86641806-2563opendoar:2024-05-17T13:03:18Acta scientiarum. Technology (Online) - Universidade Estadual de Maringá (UEM)false |
dc.title.none.fl_str_mv |
Vinasse treatment using a vegetable-tannin coagulant and photocatalysis - doi: 10.4025/actascitechnol.v35i1.11011 |
title |
Vinasse treatment using a vegetable-tannin coagulant and photocatalysis - doi: 10.4025/actascitechnol.v35i1.11011 |
spellingShingle |
Vinasse treatment using a vegetable-tannin coagulant and photocatalysis - doi: 10.4025/actascitechnol.v35i1.11011 Souza, Renata Padilha de vinasse coagulation/flocculation photocatalysis TiO2 vegetable tannin Engenharia Química |
title_short |
Vinasse treatment using a vegetable-tannin coagulant and photocatalysis - doi: 10.4025/actascitechnol.v35i1.11011 |
title_full |
Vinasse treatment using a vegetable-tannin coagulant and photocatalysis - doi: 10.4025/actascitechnol.v35i1.11011 |
title_fullStr |
Vinasse treatment using a vegetable-tannin coagulant and photocatalysis - doi: 10.4025/actascitechnol.v35i1.11011 |
title_full_unstemmed |
Vinasse treatment using a vegetable-tannin coagulant and photocatalysis - doi: 10.4025/actascitechnol.v35i1.11011 |
title_sort |
Vinasse treatment using a vegetable-tannin coagulant and photocatalysis - doi: 10.4025/actascitechnol.v35i1.11011 |
author |
Souza, Renata Padilha de |
author_facet |
Souza, Renata Padilha de Girardi, Franciélle Santana, Veronice Sluzarski Fernandes-Machado, Nádia Regina Camargo Gimenes, Marcelino Luiz |
author_role |
author |
author2 |
Girardi, Franciélle Santana, Veronice Sluzarski Fernandes-Machado, Nádia Regina Camargo Gimenes, Marcelino Luiz |
author2_role |
author author author author |
dc.contributor.author.fl_str_mv |
Souza, Renata Padilha de Girardi, Franciélle Santana, Veronice Sluzarski Fernandes-Machado, Nádia Regina Camargo Gimenes, Marcelino Luiz |
dc.subject.por.fl_str_mv |
vinasse coagulation/flocculation photocatalysis TiO2 vegetable tannin Engenharia Química |
topic |
vinasse coagulation/flocculation photocatalysis TiO2 vegetable tannin Engenharia Química |
description |
The large volume of sugar cane vinasse generated by alcohol distillation motivated current treatment to reduce vinasse volume by a concentration process and to eliminate pollutants in the wastewater. The vinasse concentration by the coagulation/flocculation process favored the use of the thickened sludge either for fertilizing purposes or for biogas production. The photocatalysis treatment of the clarified vinasse mineralized pollutants and reduced toxicity, with subsequent water reuse. The first series of coagulation/flocculation experiments were carried out in a jar-test apparatus at room temperature with samples of 200 mL and several coagulant concentrations. In the second series of experiments, photocatalysis tests were performed on the clarified vinasse obtained by coagulation/flocculation under conditions optimized in the first series of experiments. The photocatalysis tests were performed for five consecutive days with UV irradiation, using TiO2-P25 as photocatalyst. Significant reduction of toxicity, consistent with the reduction in chemical oxygen demand (COD), was found when the photocatalysis treatment subsequent to coagulation/flocculation process was employed. Further, 98% reduction of turbidity and 87% reduction of color were obtained by the coagulation/flocculation process. Coupled to the photocatalysis process, significant reductions in absorbance, toxicity and COD (80%) were also achieved. |
publishDate |
2012 |
dc.date.none.fl_str_mv |
2012-08-27 |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Catálise; Coagulação-Floculação |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://www.periodicos.uem.br/ojs/index.php/ActaSciTechnol/article/view/11011 10.4025/actascitechnol.v35i1.11011 |
url |
http://www.periodicos.uem.br/ojs/index.php/ActaSciTechnol/article/view/11011 |
identifier_str_mv |
10.4025/actascitechnol.v35i1.11011 |
dc.language.iso.fl_str_mv |
por eng |
language |
por eng |
dc.relation.none.fl_str_mv |
http://www.periodicos.uem.br/ojs/index.php/ActaSciTechnol/article/view/11011/pdf http://www.periodicos.uem.br/ojs/index.php/ActaSciTechnol/article/view/11011/pdf_1 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
application/pdf application/pdf |
dc.publisher.none.fl_str_mv |
Universidade Estadual De Maringá |
publisher.none.fl_str_mv |
Universidade Estadual De Maringá |
dc.source.none.fl_str_mv |
Acta Scientiarum. Technology; Vol 35 No 1 (2013); 89-95 Acta Scientiarum. Technology; v. 35 n. 1 (2013); 89-95 1806-2563 1807-8664 reponame:Acta scientiarum. Technology (Online) instname:Universidade Estadual de Maringá (UEM) instacron:UEM |
instname_str |
Universidade Estadual de Maringá (UEM) |
instacron_str |
UEM |
institution |
UEM |
reponame_str |
Acta scientiarum. Technology (Online) |
collection |
Acta scientiarum. Technology (Online) |
repository.name.fl_str_mv |
Acta scientiarum. Technology (Online) - Universidade Estadual de Maringá (UEM) |
repository.mail.fl_str_mv |
||actatech@uem.br |
_version_ |
1799315334265569280 |