Fotodecomposição e remoção de efluente textil usando fotocatalise com polipirrol
Autor(a) principal: | |
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Data de Publicação: | 2015 |
Tipo de documento: | Tese |
Idioma: | por |
Título da fonte: | Repositório Institucional da UFG |
Texto Completo: | http://repositorio.bc.ufg.br/tede/handle/tede/4959 |
Resumo: | A real sample of textile wastewater was successfully decolorized through a simple, fast and efficient photocatalytic treatment using polypyrrole as catalyst. In the optimized operational conditions, the photocatalytic treatment resulted in 95.8% decrease in the units of color and 91.2% photodecomposition. Photocatalysis reduced the COD values from 1111.04 mg L1 to 71.43 mg L1, evidencing 93.6% reduction in the organic matter to be discharged. TOC was also efficiently reduced from 156.75 to 51.74. The efficiency of the photocatalytic process was maintained during repeated use when cycles of photocatalysis were followed by redoping of polypyrrole with 0.1 mol L1 HCl solution. The same photodecomposition efficiency was achieved using sunlight irradiation for 30 min, with values of photodecomposition up to 98%. Tests of toxicity using Artemia saline resulted in 96.7% survival, indicating that the products generated in the photodecomposition are non-toxic. Tests made with an artificial effluent showed the same efficiency in wastewater color removal indicating that the process may be suitable for treating effluents with different colors with same efficiency. In this way, photocatalytic treatment may be applied on photodecomposition of textile effluent, independent of the predominant color present in the effluent. |
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Fernandes, Kátia Fláviahttp://lattes.cnpq.br/9737543228759171Fernandes, Kátia FláviaGarcía Rodríguez, ArmandoSilveira, Alexander Augusto daPascoal, Aline MendonçaBrito, Wesley de Almeidahttp://lattes.cnpq.br/6101181215104216Lima, Claudinei Sousa2015-11-30T08:26:27Z2015-04-06LIMA, C. S. Fotodecomposição e remoção de efluente textil usando fotocatalise com polipirrol. 2015. 56 f. Tese (Doutorado em Biologia) - Universidade Federal de Goiás, Goiânia,2015.http://repositorio.bc.ufg.br/tede/handle/tede/4959ark:/38995/0013000001t97A real sample of textile wastewater was successfully decolorized through a simple, fast and efficient photocatalytic treatment using polypyrrole as catalyst. In the optimized operational conditions, the photocatalytic treatment resulted in 95.8% decrease in the units of color and 91.2% photodecomposition. Photocatalysis reduced the COD values from 1111.04 mg L1 to 71.43 mg L1, evidencing 93.6% reduction in the organic matter to be discharged. TOC was also efficiently reduced from 156.75 to 51.74. The efficiency of the photocatalytic process was maintained during repeated use when cycles of photocatalysis were followed by redoping of polypyrrole with 0.1 mol L1 HCl solution. The same photodecomposition efficiency was achieved using sunlight irradiation for 30 min, with values of photodecomposition up to 98%. Tests of toxicity using Artemia saline resulted in 96.7% survival, indicating that the products generated in the photodecomposition are non-toxic. Tests made with an artificial effluent showed the same efficiency in wastewater color removal indicating that the process may be suitable for treating effluents with different colors with same efficiency. In this way, photocatalytic treatment may be applied on photodecomposition of textile effluent, independent of the predominant color present in the effluent.Uma amostra real de efluente têxtil foi descorada com sucesso através de um tratamento fotocatalítico simples, rápido e eficiente usando polipirrol como catalisador. Nas condições operacionais optimizadas, o tratamento fotocatalítico resultou em 95,8% de diminuição nas unidades de cor e 91,2% fotodecomposição. A fotocatálise reduziu os valores de Demanda Química de Oxigênio (DQO) de 1111,04 mg.L-1 para 71,43 mg.L-1, evidenciando redução de 93,6% da matéria orgânica a ser descartada nos corpos receptores. O Carbono Orgânico Total (COT) também foi reduzido de forma eficiente 156,75 - 51,74 ppm . A eficiência do processo fotocatalítico foi mantida durante o uso repetido, quando os ciclos de fotocatálise foram seguidos por redopagem do polipirrol com uma solução de HCl 0,1 mol.l-1. A mesma eficiência de fotodecomposição foi conseguida utilizando irradiação solar durante 30 minutos, com valores de fotodecomposição até 98%. Os testes de toxicidade usando Artemia salina, resultaram em 96,7% de sobrevivência, o que indica que os produtos gerados na fotodecomposição não são tóxicos. Testes feitos com o um efluente artificial mostraram a mesma eficiência na remoção da cor do efluente indicando que o processo pode ser adequado a tratar efluentes artificias que permitiriam realização de experimentos sem a interferência de variações da cor do efluente em função cor predominante produzida no dia da coleta.Submitted by Luciana Ferreira (lucgeral@gmail.com) on 2015-11-30T08:24:16Z No. of bitstreams: 2 Tese - Claudinei Sousa Lima - 2015.pdf: 4697944 bytes, checksum: 7602b1a52d5ff89353f1980ba35380a6 (MD5) license_rdf: 23148 bytes, checksum: 9da0b6dfac957114c6a7714714b86306 (MD5)Approved for entry into archive by Luciana Ferreira (lucgeral@gmail.com) on 2015-11-30T08:26:27Z (GMT) No. of bitstreams: 2 Tese - Claudinei Sousa Lima - 2015.pdf: 4697944 bytes, checksum: 7602b1a52d5ff89353f1980ba35380a6 (MD5) license_rdf: 23148 bytes, checksum: 9da0b6dfac957114c6a7714714b86306 (MD5)Made available in DSpace on 2015-11-30T08:26:27Z (GMT). No. of bitstreams: 2 Tese - Claudinei Sousa Lima - 2015.pdf: 4697944 bytes, checksum: 7602b1a52d5ff89353f1980ba35380a6 (MD5) license_rdf: 23148 bytes, checksum: 9da0b6dfac957114c6a7714714b86306 (MD5) Previous issue date: 2015-04-06Fundação de Amparo à Pesquisa do Estado de Goiás - FAPEGapplication/pdfporUniversidade Federal de GoiásPrograma de Pós-graduação em Biologia (ICB)UFGBrasilInstituto de Ciências Biológicas - ICB (RG)http://creativecommons.org/licenses/by-nc-nd/4.0/info:eu-repo/semantics/openAccessEfluente têxtilDescoloraçãoToxicidadeIrradiação solarFotocatáliseTextile effluentDecolorizationToxicitySolar irradiationPhotocatalysisCIENCIAS BIOLOGICAS::BIOLOGIA GERALFotodecomposição e remoção de efluente textil usando fotocatalise com polipirrolPhotodecomposition and removal textille effluent by photocatalysis with polypyrroleinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/doctoralThesis6883982777473437920600600600600-3872772117827373404-1634559385931244697-961409807440757778reponame:Repositório Institucional da UFGinstname:Universidade Federal de Goiás (UFG)instacron:UFGLICENSElicense.txtlicense.txttext/plain; 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dc.title.por.fl_str_mv |
Fotodecomposição e remoção de efluente textil usando fotocatalise com polipirrol |
dc.title.alternative.eng.fl_str_mv |
Photodecomposition and removal textille effluent by photocatalysis with polypyrrole |
title |
Fotodecomposição e remoção de efluente textil usando fotocatalise com polipirrol |
spellingShingle |
Fotodecomposição e remoção de efluente textil usando fotocatalise com polipirrol Lima, Claudinei Sousa Efluente têxtil Descoloração Toxicidade Irradiação solar Fotocatálise Textile effluent Decolorization Toxicity Solar irradiation Photocatalysis CIENCIAS BIOLOGICAS::BIOLOGIA GERAL |
title_short |
Fotodecomposição e remoção de efluente textil usando fotocatalise com polipirrol |
title_full |
Fotodecomposição e remoção de efluente textil usando fotocatalise com polipirrol |
title_fullStr |
Fotodecomposição e remoção de efluente textil usando fotocatalise com polipirrol |
title_full_unstemmed |
Fotodecomposição e remoção de efluente textil usando fotocatalise com polipirrol |
title_sort |
Fotodecomposição e remoção de efluente textil usando fotocatalise com polipirrol |
author |
Lima, Claudinei Sousa |
author_facet |
Lima, Claudinei Sousa |
author_role |
author |
dc.contributor.advisor1.fl_str_mv |
Fernandes, Kátia Flávia |
dc.contributor.advisor1Lattes.fl_str_mv |
http://lattes.cnpq.br/9737543228759171 |
dc.contributor.referee1.fl_str_mv |
Fernandes, Kátia Flávia |
dc.contributor.referee2.fl_str_mv |
García Rodríguez, Armando |
dc.contributor.referee3.fl_str_mv |
Silveira, Alexander Augusto da |
dc.contributor.referee4.fl_str_mv |
Pascoal, Aline Mendonça |
dc.contributor.referee5.fl_str_mv |
Brito, Wesley de Almeida |
dc.contributor.authorLattes.fl_str_mv |
http://lattes.cnpq.br/6101181215104216 |
dc.contributor.author.fl_str_mv |
Lima, Claudinei Sousa |
contributor_str_mv |
Fernandes, Kátia Flávia Fernandes, Kátia Flávia García Rodríguez, Armando Silveira, Alexander Augusto da Pascoal, Aline Mendonça Brito, Wesley de Almeida |
dc.subject.por.fl_str_mv |
Efluente têxtil Descoloração Toxicidade Irradiação solar Fotocatálise |
topic |
Efluente têxtil Descoloração Toxicidade Irradiação solar Fotocatálise Textile effluent Decolorization Toxicity Solar irradiation Photocatalysis CIENCIAS BIOLOGICAS::BIOLOGIA GERAL |
dc.subject.eng.fl_str_mv |
Textile effluent Decolorization Toxicity Solar irradiation Photocatalysis |
dc.subject.cnpq.fl_str_mv |
CIENCIAS BIOLOGICAS::BIOLOGIA GERAL |
description |
A real sample of textile wastewater was successfully decolorized through a simple, fast and efficient photocatalytic treatment using polypyrrole as catalyst. In the optimized operational conditions, the photocatalytic treatment resulted in 95.8% decrease in the units of color and 91.2% photodecomposition. Photocatalysis reduced the COD values from 1111.04 mg L1 to 71.43 mg L1, evidencing 93.6% reduction in the organic matter to be discharged. TOC was also efficiently reduced from 156.75 to 51.74. The efficiency of the photocatalytic process was maintained during repeated use when cycles of photocatalysis were followed by redoping of polypyrrole with 0.1 mol L1 HCl solution. The same photodecomposition efficiency was achieved using sunlight irradiation for 30 min, with values of photodecomposition up to 98%. Tests of toxicity using Artemia saline resulted in 96.7% survival, indicating that the products generated in the photodecomposition are non-toxic. Tests made with an artificial effluent showed the same efficiency in wastewater color removal indicating that the process may be suitable for treating effluents with different colors with same efficiency. In this way, photocatalytic treatment may be applied on photodecomposition of textile effluent, independent of the predominant color present in the effluent. |
publishDate |
2015 |
dc.date.accessioned.fl_str_mv |
2015-11-30T08:26:27Z |
dc.date.issued.fl_str_mv |
2015-04-06 |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/doctoralThesis |
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doctoralThesis |
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publishedVersion |
dc.identifier.citation.fl_str_mv |
LIMA, C. S. Fotodecomposição e remoção de efluente textil usando fotocatalise com polipirrol. 2015. 56 f. Tese (Doutorado em Biologia) - Universidade Federal de Goiás, Goiânia,2015. |
dc.identifier.uri.fl_str_mv |
http://repositorio.bc.ufg.br/tede/handle/tede/4959 |
dc.identifier.dark.fl_str_mv |
ark:/38995/0013000001t97 |
identifier_str_mv |
LIMA, C. S. Fotodecomposição e remoção de efluente textil usando fotocatalise com polipirrol. 2015. 56 f. Tese (Doutorado em Biologia) - Universidade Federal de Goiás, Goiânia,2015. ark:/38995/0013000001t97 |
url |
http://repositorio.bc.ufg.br/tede/handle/tede/4959 |
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por |
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por |
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6883982777473437920 |
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600 600 600 600 |
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http://creativecommons.org/licenses/by-nc-nd/4.0/ info:eu-repo/semantics/openAccess |
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http://creativecommons.org/licenses/by-nc-nd/4.0/ |
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openAccess |
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Universidade Federal de Goiás |
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Programa de Pós-graduação em Biologia (ICB) |
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UFG |
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Brasil |
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Instituto de Ciências Biológicas - ICB (RG) |
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Universidade Federal de Goiás |
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