Photocatalytic Oxidation Process (UV/H2O2/ZnO) in the treatment and sterilization of dairy wastewater - doi: 10.4025/actascitechnol.v35i1.11132
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/11132 |
Resumo: | Advanced Oxidation Processes (AOP) have attracted much interest of scientific and industrial communities. Therefore, this process was employed experimentally to determine its efficacy in treating dairy effluents. For this, it was employed an artificial light reactor using photolysis (UV), hydrogen peroxide (H2O2) as an oxidant, and zinc oxide (ZnO) as an alternative catalyst. The variables studied in the photocatalysis were: H2O2, ZnO, under different values of pH, both in relation to the interferences with the reaction rate and with the process efficiency. First order differential equations were applied in determining the degradation rate over the hydraulic retention time (HRT); the F-test and the signal: noise ratio comparison were used to test the significance of variables. The AOP using photolysis UV, H2O2 and ZnO was effective in COD removal with 80% efficiency. As for the sterilization, in terms of total and fecal coliforms the efficiency was 100%, with the most probable number of total and fecal coliforms (MPN 100 mL-1) equal to zero. A catalyst/oxidant/pH ratio was observed at 1 g 30 mL-1 4-1 for a better kinetic-chemical reaction, for 1 hour lighting. |
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Photocatalytic Oxidation Process (UV/H2O2/ZnO) in the treatment and sterilization of dairy wastewater - doi: 10.4025/actascitechnol.v35i1.11132heterogeneous photocatalysischemical kineticswastewater treatment3.05.02.02-0Advanced Oxidation Processes (AOP) have attracted much interest of scientific and industrial communities. Therefore, this process was employed experimentally to determine its efficacy in treating dairy effluents. For this, it was employed an artificial light reactor using photolysis (UV), hydrogen peroxide (H2O2) as an oxidant, and zinc oxide (ZnO) as an alternative catalyst. The variables studied in the photocatalysis were: H2O2, ZnO, under different values of pH, both in relation to the interferences with the reaction rate and with the process efficiency. First order differential equations were applied in determining the degradation rate over the hydraulic retention time (HRT); the F-test and the signal: noise ratio comparison were used to test the significance of variables. The AOP using photolysis UV, H2O2 and ZnO was effective in COD removal with 80% efficiency. As for the sterilization, in terms of total and fecal coliforms the efficiency was 100%, with the most probable number of total and fecal coliforms (MPN 100 mL-1) equal to zero. A catalyst/oxidant/pH ratio was observed at 1 g 30 mL-1 4-1 for a better kinetic-chemical reaction, for 1 hour lighting. Universidade Estadual De Maringá2012-08-27info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersioncataliseapplication/pdfapplication/pdfhttp://www.periodicos.uem.br/ojs/index.php/ActaSciTechnol/article/view/1113210.4025/actascitechnol.v35i1.11132Acta Scientiarum. Technology; Vol 35 No 1 (2013); 75-81Acta Scientiarum. Technology; v. 35 n. 1 (2013); 75-811806-25631807-8664reponame:Acta scientiarum. Technology (Online)instname:Universidade Estadual de Maringá (UEM)instacron:UEMporenghttp://www.periodicos.uem.br/ojs/index.php/ActaSciTechnol/article/view/11132/pdfhttp://www.periodicos.uem.br/ojs/index.php/ActaSciTechnol/article/view/11132/pdf_1Abreu, Priscila dePereira, Erlon LopesCampos, Cláudio Milton MontenegroNaves, Fabiano Luizinfo:eu-repo/semantics/openAccess2024-05-17T13:03:18Zoai:periodicos.uem.br/ojs:article/11132Revistahttps://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 |
Photocatalytic Oxidation Process (UV/H2O2/ZnO) in the treatment and sterilization of dairy wastewater - doi: 10.4025/actascitechnol.v35i1.11132 |
title |
Photocatalytic Oxidation Process (UV/H2O2/ZnO) in the treatment and sterilization of dairy wastewater - doi: 10.4025/actascitechnol.v35i1.11132 |
spellingShingle |
Photocatalytic Oxidation Process (UV/H2O2/ZnO) in the treatment and sterilization of dairy wastewater - doi: 10.4025/actascitechnol.v35i1.11132 Abreu, Priscila de heterogeneous photocatalysis chemical kinetics wastewater treatment 3.05.02.02-0 |
title_short |
Photocatalytic Oxidation Process (UV/H2O2/ZnO) in the treatment and sterilization of dairy wastewater - doi: 10.4025/actascitechnol.v35i1.11132 |
title_full |
Photocatalytic Oxidation Process (UV/H2O2/ZnO) in the treatment and sterilization of dairy wastewater - doi: 10.4025/actascitechnol.v35i1.11132 |
title_fullStr |
Photocatalytic Oxidation Process (UV/H2O2/ZnO) in the treatment and sterilization of dairy wastewater - doi: 10.4025/actascitechnol.v35i1.11132 |
title_full_unstemmed |
Photocatalytic Oxidation Process (UV/H2O2/ZnO) in the treatment and sterilization of dairy wastewater - doi: 10.4025/actascitechnol.v35i1.11132 |
title_sort |
Photocatalytic Oxidation Process (UV/H2O2/ZnO) in the treatment and sterilization of dairy wastewater - doi: 10.4025/actascitechnol.v35i1.11132 |
author |
Abreu, Priscila de |
author_facet |
Abreu, Priscila de Pereira, Erlon Lopes Campos, Cláudio Milton Montenegro Naves, Fabiano Luiz |
author_role |
author |
author2 |
Pereira, Erlon Lopes Campos, Cláudio Milton Montenegro Naves, Fabiano Luiz |
author2_role |
author author author |
dc.contributor.author.fl_str_mv |
Abreu, Priscila de Pereira, Erlon Lopes Campos, Cláudio Milton Montenegro Naves, Fabiano Luiz |
dc.subject.por.fl_str_mv |
heterogeneous photocatalysis chemical kinetics wastewater treatment 3.05.02.02-0 |
topic |
heterogeneous photocatalysis chemical kinetics wastewater treatment 3.05.02.02-0 |
description |
Advanced Oxidation Processes (AOP) have attracted much interest of scientific and industrial communities. Therefore, this process was employed experimentally to determine its efficacy in treating dairy effluents. For this, it was employed an artificial light reactor using photolysis (UV), hydrogen peroxide (H2O2) as an oxidant, and zinc oxide (ZnO) as an alternative catalyst. The variables studied in the photocatalysis were: H2O2, ZnO, under different values of pH, both in relation to the interferences with the reaction rate and with the process efficiency. First order differential equations were applied in determining the degradation rate over the hydraulic retention time (HRT); the F-test and the signal: noise ratio comparison were used to test the significance of variables. The AOP using photolysis UV, H2O2 and ZnO was effective in COD removal with 80% efficiency. As for the sterilization, in terms of total and fecal coliforms the efficiency was 100%, with the most probable number of total and fecal coliforms (MPN 100 mL-1) equal to zero. A catalyst/oxidant/pH ratio was observed at 1 g 30 mL-1 4-1 for a better kinetic-chemical reaction, for 1 hour lighting. |
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 catalise |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://www.periodicos.uem.br/ojs/index.php/ActaSciTechnol/article/view/11132 10.4025/actascitechnol.v35i1.11132 |
url |
http://www.periodicos.uem.br/ojs/index.php/ActaSciTechnol/article/view/11132 |
identifier_str_mv |
10.4025/actascitechnol.v35i1.11132 |
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/11132/pdf http://www.periodicos.uem.br/ojs/index.php/ActaSciTechnol/article/view/11132/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); 75-81 Acta Scientiarum. Technology; v. 35 n. 1 (2013); 75-81 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_ |
1799315334269763584 |