Tratamento de efluente de terminal de combustível coagulação/floculação/fotocatálise
Autor(a) principal: | |
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Data de Publicação: | 2011 |
Tipo de documento: | Dissertação |
Idioma: | por |
Título da fonte: | Repositório Institucional da Universidade Estadual de Maringá (RI-UEM) |
Texto Completo: | http://repositorio.uem.br:8080/jspui/handle/1/3838 |
Resumo: | The treatment systems of gas station wastewater (oil-water separator - OWS) has shown to be insufficient in reducing the organic matter, especially with concerns to aliphatic and aromatic hydrocarbons, major pollutants found in these effluents. In the end of 2009 the number of existing gas stations in Brazil was nearly 38,000, many of which offer, besides the fuel supply, services of oil changing, car wash and convenience stores. Many fuel stations discard their waste on public sewage systems, becoming potential polluters, adding to domestic sewage highly toxic and carcinogenic pollutants. Hence the need of developing systems those are effective in treating these effluents, and ensure the degradation of hydrocarbons and other pollutants. In this work, the efficiency of the combined treatment of gas station effluent by coagulation/flocculation/photocatalysis was investigated. The waste was collected from a gas station located in Maringá-PR, characterized and submitted to physico-chemical and photocatalytic treatments under VIS and UV radiation. The coagulants employed were Al2(SO4)3, FeCl3 and TANFLOC ® SG. Catalysts used were TiO2, ZnO and Nb2O5 calcined at 500 °C employed in the pure form and mechanical mixture (50%wt). The photocatalytic process was evaluated according to the reduction of absorbance, COD, turbidity and toxicity. The coagulation/flocculation with TANFLOC ® SG removed approximately 52% of TOC, 73% of COD and 97% of turbidity. The photocatalytic tests were carried out with the in natura and coagulation/flocculation clarified effluent, using VIS and UV radiation. The most active catalyst under VIS radiation was TiO2, reducing 43% of COD of in natura effluent and 53% of COD of clarified effluent. Under UV radiation, the best catalyst was the TiO2-ZnO, which reduced 45% of the COD of the in natura effluent and 67% of the COD of the effluent clarified. With combined treatment, it was possible to achieve treated water with COD of 104 mg/L, turbidity of 9.58 NTU and low toxicity to Artemia salina, and in some cases the elimination of toxicity was achieved. |
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Tratamento de efluente de terminal de combustível coagulação/floculação/fotocatáliseTreatment of fuel terminal effluent: coagulation/flocculation/photocatalysisTratamento de efluenteTerminal de combustívelToxicidadeCoagulação/floculaçãoFotocatálise heterogêneaCatáliseFotocatalisadoresProcesso oxidativo avançadoBrasil.EffluentCoagulation/FlocculationHeterogeneous PhotocatalysisToxicityBrazil.EngenhariasEngenharia QuímicaThe treatment systems of gas station wastewater (oil-water separator - OWS) has shown to be insufficient in reducing the organic matter, especially with concerns to aliphatic and aromatic hydrocarbons, major pollutants found in these effluents. In the end of 2009 the number of existing gas stations in Brazil was nearly 38,000, many of which offer, besides the fuel supply, services of oil changing, car wash and convenience stores. Many fuel stations discard their waste on public sewage systems, becoming potential polluters, adding to domestic sewage highly toxic and carcinogenic pollutants. Hence the need of developing systems those are effective in treating these effluents, and ensure the degradation of hydrocarbons and other pollutants. In this work, the efficiency of the combined treatment of gas station effluent by coagulation/flocculation/photocatalysis was investigated. The waste was collected from a gas station located in Maringá-PR, characterized and submitted to physico-chemical and photocatalytic treatments under VIS and UV radiation. The coagulants employed were Al2(SO4)3, FeCl3 and TANFLOC ® SG. Catalysts used were TiO2, ZnO and Nb2O5 calcined at 500 °C employed in the pure form and mechanical mixture (50%wt). The photocatalytic process was evaluated according to the reduction of absorbance, COD, turbidity and toxicity. The coagulation/flocculation with TANFLOC ® SG removed approximately 52% of TOC, 73% of COD and 97% of turbidity. The photocatalytic tests were carried out with the in natura and coagulation/flocculation clarified effluent, using VIS and UV radiation. The most active catalyst under VIS radiation was TiO2, reducing 43% of COD of in natura effluent and 53% of COD of clarified effluent. Under UV radiation, the best catalyst was the TiO2-ZnO, which reduced 45% of the COD of the in natura effluent and 67% of the COD of the effluent clarified. With combined treatment, it was possible to achieve treated water with COD of 104 mg/L, turbidity of 9.58 NTU and low toxicity to Artemia salina, and in some cases the elimination of toxicity was achieved.Os sistemas de tratamento de efluentes de postos de combustíveis (separador água-óleo - SAO) tem se mostrado insuficiente na redução da carga orgânica, especialmente no que diz respeito aos hidrocarbonetos alifáticos e aromáticos, principais poluentes encontrados nesses efluentes. No fim de 2009, o número de postos de combustíveis existentes no Brasil era de aproximadamente 38 000, muitos dos quais oferecem, além do abastecimento, serviços de troca de óleo, lavagem de veículos e loja de conveniências. Muitos postos de abastecimento lançam seus efluentes nas redes públicas coletoras de esgoto, tornando-se poluidores em potencial, incorporando ao esgoto doméstico poluentes altamente tóxicos e carcinogênicos. Daí a necessidade do desenvolvimento de sistemas que sejam eficientes no tratamento desses efluentes, e garantam a degradação dos hidrocarbonetos e outros poluentes presentes. Neste trabalho, foi avaliada a eficiência do tratamento combinado do efluente de posto de combustível por coagulação/floculação/fotocatálise. O efluente foi coletado em um posto de combustível localizado na cidade de Maringá-PR, caracterizado e submetido aos tratamentos físicoquímico e fotocatalítico sob radiação VIS e UV. Os coagulantes utilizados foram: Al2(SO4)3, FeCl3 e TANFLOC® SG. Foram utilizados os catalisadores TiO2, ZnO e Nb2O5 calcinados a 500 °C e empregados na forma pura e em mistura mecânica (50% em massa). O processo fotocatalítico foi avaliado quanto à redução da absorbância, DQO, turbidez e toxicidade. A coagulação/floculação com TANFLOC® SG removeu cerca de 52% do COT, 73% da DQO e 97% da turbidez. Os ensaios fotocatalíticos foram realizados com o efluente in natura e com o efluente clarificado por coagulação/floculação. Foram utilizadas as radiações VIS e UV. O catalisador que apresentou maior atividade sob radiação VIS foi o TiO2, reduzindo 43% da DQO do efluente in natura e 53% da DQO do efluente clarificado. Sob radiação UV, o melhor catalisador foi o TiO2-ZnO, que reduziu 45% da DQO do efluente in natura e 67% da DQO do efluente clarificado. Com o tratamento combinado, foi possível alcançar uma água tratada com DQO de 104 mg/L, turbidez de 9,58 NTU e baixa toxicidade à Artemia salina, sendo que em alguns casos houve a eliminação da toxicidade.xvii, 131 fUniversidade Estadual de MaringáBrasilDepartamento de Engenharia QuímicaPrograma de Pós-Graduação em Engenharia QuímicaUEMMaringá, PRCentro de TecnologiaNádia Regina Camargo Fernandes-MachadoVeronice Slusasrki Santana - UEMDenise Maria Malachini Miotto Bigatão - UEMFerrari, Ana Maria Cristina da Cruz2018-04-17T17:45:41Z2018-04-17T17:45:41Z2011info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/masterThesishttp://repositorio.uem.br:8080/jspui/handle/1/3838porinfo:eu-repo/semantics/openAccessreponame:Repositório Institucional da Universidade Estadual de Maringá (RI-UEM)instname:Universidade Estadual de Maringá (UEM)instacron:UEM2024-01-09T19:15:53Zoai:localhost:1/3838Repositório InstitucionalPUBhttp://repositorio.uem.br:8080/oai/requestopendoar:2024-04-23T14:56:59.686362Repositório Institucional da Universidade Estadual de Maringá (RI-UEM) - Universidade Estadual de Maringá (UEM)false |
dc.title.none.fl_str_mv |
Tratamento de efluente de terminal de combustível coagulação/floculação/fotocatálise Treatment of fuel terminal effluent: coagulation/flocculation/photocatalysis |
title |
Tratamento de efluente de terminal de combustível coagulação/floculação/fotocatálise |
spellingShingle |
Tratamento de efluente de terminal de combustível coagulação/floculação/fotocatálise Ferrari, Ana Maria Cristina da Cruz Tratamento de efluente Terminal de combustível Toxicidade Coagulação/floculação Fotocatálise heterogênea Catálise Fotocatalisadores Processo oxidativo avançado Brasil. Effluent Coagulation/Flocculation Heterogeneous Photocatalysis Toxicity Brazil. Engenharias Engenharia Química |
title_short |
Tratamento de efluente de terminal de combustível coagulação/floculação/fotocatálise |
title_full |
Tratamento de efluente de terminal de combustível coagulação/floculação/fotocatálise |
title_fullStr |
Tratamento de efluente de terminal de combustível coagulação/floculação/fotocatálise |
title_full_unstemmed |
Tratamento de efluente de terminal de combustível coagulação/floculação/fotocatálise |
title_sort |
Tratamento de efluente de terminal de combustível coagulação/floculação/fotocatálise |
author |
Ferrari, Ana Maria Cristina da Cruz |
author_facet |
Ferrari, Ana Maria Cristina da Cruz |
author_role |
author |
dc.contributor.none.fl_str_mv |
Nádia Regina Camargo Fernandes-Machado Veronice Slusasrki Santana - UEM Denise Maria Malachini Miotto Bigatão - UEM |
dc.contributor.author.fl_str_mv |
Ferrari, Ana Maria Cristina da Cruz |
dc.subject.por.fl_str_mv |
Tratamento de efluente Terminal de combustível Toxicidade Coagulação/floculação Fotocatálise heterogênea Catálise Fotocatalisadores Processo oxidativo avançado Brasil. Effluent Coagulation/Flocculation Heterogeneous Photocatalysis Toxicity Brazil. Engenharias Engenharia Química |
topic |
Tratamento de efluente Terminal de combustível Toxicidade Coagulação/floculação Fotocatálise heterogênea Catálise Fotocatalisadores Processo oxidativo avançado Brasil. Effluent Coagulation/Flocculation Heterogeneous Photocatalysis Toxicity Brazil. Engenharias Engenharia Química |
description |
The treatment systems of gas station wastewater (oil-water separator - OWS) has shown to be insufficient in reducing the organic matter, especially with concerns to aliphatic and aromatic hydrocarbons, major pollutants found in these effluents. In the end of 2009 the number of existing gas stations in Brazil was nearly 38,000, many of which offer, besides the fuel supply, services of oil changing, car wash and convenience stores. Many fuel stations discard their waste on public sewage systems, becoming potential polluters, adding to domestic sewage highly toxic and carcinogenic pollutants. Hence the need of developing systems those are effective in treating these effluents, and ensure the degradation of hydrocarbons and other pollutants. In this work, the efficiency of the combined treatment of gas station effluent by coagulation/flocculation/photocatalysis was investigated. The waste was collected from a gas station located in Maringá-PR, characterized and submitted to physico-chemical and photocatalytic treatments under VIS and UV radiation. The coagulants employed were Al2(SO4)3, FeCl3 and TANFLOC ® SG. Catalysts used were TiO2, ZnO and Nb2O5 calcined at 500 °C employed in the pure form and mechanical mixture (50%wt). The photocatalytic process was evaluated according to the reduction of absorbance, COD, turbidity and toxicity. The coagulation/flocculation with TANFLOC ® SG removed approximately 52% of TOC, 73% of COD and 97% of turbidity. The photocatalytic tests were carried out with the in natura and coagulation/flocculation clarified effluent, using VIS and UV radiation. The most active catalyst under VIS radiation was TiO2, reducing 43% of COD of in natura effluent and 53% of COD of clarified effluent. Under UV radiation, the best catalyst was the TiO2-ZnO, which reduced 45% of the COD of the in natura effluent and 67% of the COD of the effluent clarified. With combined treatment, it was possible to achieve treated water with COD of 104 mg/L, turbidity of 9.58 NTU and low toxicity to Artemia salina, and in some cases the elimination of toxicity was achieved. |
publishDate |
2011 |
dc.date.none.fl_str_mv |
2011 2018-04-17T17:45:41Z 2018-04-17T17:45:41Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/masterThesis |
format |
masterThesis |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://repositorio.uem.br:8080/jspui/handle/1/3838 |
url |
http://repositorio.uem.br:8080/jspui/handle/1/3838 |
dc.language.iso.fl_str_mv |
por |
language |
por |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.publisher.none.fl_str_mv |
Universidade Estadual de Maringá Brasil Departamento de Engenharia Química Programa de Pós-Graduação em Engenharia Química UEM Maringá, PR Centro de Tecnologia |
publisher.none.fl_str_mv |
Universidade Estadual de Maringá Brasil Departamento de Engenharia Química Programa de Pós-Graduação em Engenharia Química UEM Maringá, PR Centro de Tecnologia |
dc.source.none.fl_str_mv |
reponame:Repositório Institucional da Universidade Estadual de Maringá (RI-UEM) instname:Universidade Estadual de Maringá (UEM) instacron:UEM |
instname_str |
Universidade Estadual de Maringá (UEM) |
instacron_str |
UEM |
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UEM |
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Repositório Institucional da Universidade Estadual de Maringá (RI-UEM) |
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Repositório Institucional da Universidade Estadual de Maringá (RI-UEM) |
repository.name.fl_str_mv |
Repositório Institucional da Universidade Estadual de Maringá (RI-UEM) - Universidade Estadual de Maringá (UEM) |
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