ADSORÇÃO DE AZUL DE METILENO EM ÓXIDO DE GRAFENO MAGNÉTICO E AVALIAÇÃO TOXICOLÓGICA DO ADSORVENTE EM PEIXES ZEBRA (Danio rerio) E EM ARTÊMIAS SALINAS
Autor(a) principal: | |
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Data de Publicação: | 2018 |
Tipo de documento: | Dissertação |
Idioma: | por |
Título da fonte: | Repositório Institucional Universidade Franciscana |
Texto Completo: | http://www.tede.universidadefranciscana.edu.br:8080/handle/UFN-BDTD/731 |
Resumo: | Water is an essential resource to all living organisms and to several human activities. The disposal of dye containing effluents on aquatic environment, such as methylene blue, causes serious environmental problems. Thus, a proper treatment of such effluents is needed before their disposal on water environment. Water and effluents treatment processes use traditional physical-chemical and biological treatments and are not efficient in removing these contaminants. Among the various techniques used for the purification of aqueous effluents, the adsorption technique stands out and, with the advancement of nanotechnology, new materials have been synthesized and gained prominence in research for their use as promising adsorbents. Graphene oxide is the newest member of the carbon allotrope family and has attracted attention for various applications because of its properties. However, in the adsorbate recovery process, after adsorption, it has been necessary centrifugations with high rotations and for a long time so that the graphene oxide collection is possible due to high dispersion of the material. Thus, the use of nanocomposites, mixtures of graphene oxide with magnetic materials, such as zinc ferrite, makes it possible to use this property so that the recovery process can be carried out more easily. The objective of this research was to study the adsorption of methylene blue on graphene oxide magnetized with zinc ferrite, dispersed in aqueous medium, as well as to study the toxicity of this compound in zebra fish (Danio rerio) and Artemia salina. Graphene oxide was prepared according to the Hummers method and zinc ferrite was prepared by combining the sol-gel route with self-ignition synthesis. The confirmation of the compounds was obtained by the characterization by XRD, FTIR, SEM, Raman spectroscopy, BET and diffuse reflectance. The toxicity was evaluated by tests on zebra fish treated with 5 and 10 mg/L of GO and GO-ZFM and on artemias salinas treated with 1, 5 and 10 mg/L of GO and GO-ZFM. There were no significant deaths due to the treatments, however more studies need to be performed to confirm the results for the toxicity of the materials to be discarded. GO-ZFM was efficient in the adsorption of methylene blue solutions containing 15, 20, 30 and 40 mg/L. |
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Volkmer, Tiago MorenoMortari, Sérgio RobertoMorisso, Fernando Dal PontSimão, Éder MaiquelDORFEY, Daiene2019-04-23T14:11:20Z2018-08-20DORFEY, Daiene. ADSORÇÃO DE AZUL DE METILENO EM ÓXIDO DE GRAFENO MAGNÉTICO E AVALIAÇÃO TOXICOLÓGICA DO ADSORVENTE EM PEIXES ZEBRA (Danio rerio) E EM ARTÊMIAS SALINAS. 2018. 112f. Dissertação( Programa de Pós-Graduação em Nanociências) - Universidade Franciscana, Santa Maria - RS .http://www.tede.universidadefranciscana.edu.br:8080/handle/UFN-BDTD/731Water is an essential resource to all living organisms and to several human activities. The disposal of dye containing effluents on aquatic environment, such as methylene blue, causes serious environmental problems. Thus, a proper treatment of such effluents is needed before their disposal on water environment. Water and effluents treatment processes use traditional physical-chemical and biological treatments and are not efficient in removing these contaminants. Among the various techniques used for the purification of aqueous effluents, the adsorption technique stands out and, with the advancement of nanotechnology, new materials have been synthesized and gained prominence in research for their use as promising adsorbents. Graphene oxide is the newest member of the carbon allotrope family and has attracted attention for various applications because of its properties. However, in the adsorbate recovery process, after adsorption, it has been necessary centrifugations with high rotations and for a long time so that the graphene oxide collection is possible due to high dispersion of the material. Thus, the use of nanocomposites, mixtures of graphene oxide with magnetic materials, such as zinc ferrite, makes it possible to use this property so that the recovery process can be carried out more easily. The objective of this research was to study the adsorption of methylene blue on graphene oxide magnetized with zinc ferrite, dispersed in aqueous medium, as well as to study the toxicity of this compound in zebra fish (Danio rerio) and Artemia salina. Graphene oxide was prepared according to the Hummers method and zinc ferrite was prepared by combining the sol-gel route with self-ignition synthesis. The confirmation of the compounds was obtained by the characterization by XRD, FTIR, SEM, Raman spectroscopy, BET and diffuse reflectance. The toxicity was evaluated by tests on zebra fish treated with 5 and 10 mg/L of GO and GO-ZFM and on artemias salinas treated with 1, 5 and 10 mg/L of GO and GO-ZFM. There were no significant deaths due to the treatments, however more studies need to be performed to confirm the results for the toxicity of the materials to be discarded. GO-ZFM was efficient in the adsorption of methylene blue solutions containing 15, 20, 30 and 40 mg/L.A água é um recurso essencial para todos os organismos vivos e para diversas atividades humanas. O descarte de efluentes contendo corantes no ambiente aquático, como o azul de metileno, causa sérios problemas ambientais. Logo, um tratamento apropriado desses efluentes antes da disposição nos ambientes aquáticos é necessário. Os processos de tratamento de água e efluentes usam tratamentos físico-químicos e biológicos tradicionais e não são eficientes para remover esses contaminantes. Dentre as diversas técnicas utilizadas para purificação de efluentes aquosos, destaca-se a técnica de adsorção e, com o avanço da nanotecnologia, novos materiais vem sendo sintetizados e ganhando destaque em pesquisas por sua utilização como promissores adsorventes. O óxido de grafeno é o mais novo membro da família dos alótropos do carbono e tem atraído atenção para diversas aplicações devido às suas propriedades. Entretanto, no processo de recuperação após a adsorção, tem sido necessárias centrifugações com elevadas rotações e por tempo prolongado para que a coleta do óxido de grafeno seja possível devido a elevada dispersão do material. Assim, surge como alternativa a utilização de nanocompósitos, misturas do óxido de grafeno com materiais magnéticos, como a ferrita de zinco, possibilitando a utilização dessa propriedade para que o processo de recuperação possa ser realizado mais facilmente. O trabalho teve como objetivo estudar a adsorção do azul de metileno em óxido de grafeno magnetizado com ferrita de zinco, disperso em meio aquoso, bem como estudar a toxicidade desse composto em peixes zebra (Danio rerio) e artêmias salinas. O óxido de grafeno foi preparado conforme o método de Hummers e a ferrita de zinco foi preparada pela combinação da rota sol-gel com síntese com autoignição. A confirmação da obtenção dos compostos se deu pela caracterização por DRX, FTIR, MEV, espectroscopia Raman, BET e reflectância difusa. A toxicidade foi avaliada por testes em peixes zebra com tratamentos de 5 e 10 mg/L de GO e GO-ZFM e artêmias salinas com tratamentos de 1, 5 e 10 mg/L de GO e GO-ZFM, sendo que não houveram mortes significativas devido aos tratamentos, porém mais estudos necessitam ser realizados para confirmação dos resultados e para que a toxicidade dos materiais seja descartada. O GO-ZFM se mostrou eficiente na adsorção de soluções de azul de metileno contendo 15, 20, 30 e 40 mg/L.Submitted by MARCIA ROVADOSCHI (marciar@unifra.br) on 2019-04-23T14:11:20Z No. of bitstreams: 2 Dissertacao_DaieneDorfey.pdf: 2575399 bytes, checksum: 8757e5bdbac7c5a9f06cf357976f9594 (MD5) license_rdf: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5)Made available in DSpace on 2019-04-23T14:11:20Z (GMT). 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dc.title.por.fl_str_mv |
ADSORÇÃO DE AZUL DE METILENO EM ÓXIDO DE GRAFENO MAGNÉTICO E AVALIAÇÃO TOXICOLÓGICA DO ADSORVENTE EM PEIXES ZEBRA (Danio rerio) E EM ARTÊMIAS SALINAS |
title |
ADSORÇÃO DE AZUL DE METILENO EM ÓXIDO DE GRAFENO MAGNÉTICO E AVALIAÇÃO TOXICOLÓGICA DO ADSORVENTE EM PEIXES ZEBRA (Danio rerio) E EM ARTÊMIAS SALINAS |
spellingShingle |
ADSORÇÃO DE AZUL DE METILENO EM ÓXIDO DE GRAFENO MAGNÉTICO E AVALIAÇÃO TOXICOLÓGICA DO ADSORVENTE EM PEIXES ZEBRA (Danio rerio) E EM ARTÊMIAS SALINAS DORFEY, Daiene ferrita de zinco; caracterização; toxicidade. zinc ferrite; characterization; toxicity. Nanociências |
title_short |
ADSORÇÃO DE AZUL DE METILENO EM ÓXIDO DE GRAFENO MAGNÉTICO E AVALIAÇÃO TOXICOLÓGICA DO ADSORVENTE EM PEIXES ZEBRA (Danio rerio) E EM ARTÊMIAS SALINAS |
title_full |
ADSORÇÃO DE AZUL DE METILENO EM ÓXIDO DE GRAFENO MAGNÉTICO E AVALIAÇÃO TOXICOLÓGICA DO ADSORVENTE EM PEIXES ZEBRA (Danio rerio) E EM ARTÊMIAS SALINAS |
title_fullStr |
ADSORÇÃO DE AZUL DE METILENO EM ÓXIDO DE GRAFENO MAGNÉTICO E AVALIAÇÃO TOXICOLÓGICA DO ADSORVENTE EM PEIXES ZEBRA (Danio rerio) E EM ARTÊMIAS SALINAS |
title_full_unstemmed |
ADSORÇÃO DE AZUL DE METILENO EM ÓXIDO DE GRAFENO MAGNÉTICO E AVALIAÇÃO TOXICOLÓGICA DO ADSORVENTE EM PEIXES ZEBRA (Danio rerio) E EM ARTÊMIAS SALINAS |
title_sort |
ADSORÇÃO DE AZUL DE METILENO EM ÓXIDO DE GRAFENO MAGNÉTICO E AVALIAÇÃO TOXICOLÓGICA DO ADSORVENTE EM PEIXES ZEBRA (Danio rerio) E EM ARTÊMIAS SALINAS |
author |
DORFEY, Daiene |
author_facet |
DORFEY, Daiene |
author_role |
author |
dc.contributor.advisor1.fl_str_mv |
Volkmer, Tiago Moreno |
dc.contributor.advisor-co1.fl_str_mv |
Mortari, Sérgio Roberto |
dc.contributor.referee1.fl_str_mv |
Morisso, Fernando Dal Pont |
dc.contributor.referee2.fl_str_mv |
Simão, Éder Maiquel |
dc.contributor.author.fl_str_mv |
DORFEY, Daiene |
contributor_str_mv |
Volkmer, Tiago Moreno Mortari, Sérgio Roberto Morisso, Fernando Dal Pont Simão, Éder Maiquel |
dc.subject.por.fl_str_mv |
ferrita de zinco; caracterização; toxicidade. |
topic |
ferrita de zinco; caracterização; toxicidade. zinc ferrite; characterization; toxicity. Nanociências |
dc.subject.eng.fl_str_mv |
zinc ferrite; characterization; toxicity. |
dc.subject.cnpq.fl_str_mv |
Nanociências |
description |
Water is an essential resource to all living organisms and to several human activities. The disposal of dye containing effluents on aquatic environment, such as methylene blue, causes serious environmental problems. Thus, a proper treatment of such effluents is needed before their disposal on water environment. Water and effluents treatment processes use traditional physical-chemical and biological treatments and are not efficient in removing these contaminants. Among the various techniques used for the purification of aqueous effluents, the adsorption technique stands out and, with the advancement of nanotechnology, new materials have been synthesized and gained prominence in research for their use as promising adsorbents. Graphene oxide is the newest member of the carbon allotrope family and has attracted attention for various applications because of its properties. However, in the adsorbate recovery process, after adsorption, it has been necessary centrifugations with high rotations and for a long time so that the graphene oxide collection is possible due to high dispersion of the material. Thus, the use of nanocomposites, mixtures of graphene oxide with magnetic materials, such as zinc ferrite, makes it possible to use this property so that the recovery process can be carried out more easily. The objective of this research was to study the adsorption of methylene blue on graphene oxide magnetized with zinc ferrite, dispersed in aqueous medium, as well as to study the toxicity of this compound in zebra fish (Danio rerio) and Artemia salina. Graphene oxide was prepared according to the Hummers method and zinc ferrite was prepared by combining the sol-gel route with self-ignition synthesis. The confirmation of the compounds was obtained by the characterization by XRD, FTIR, SEM, Raman spectroscopy, BET and diffuse reflectance. The toxicity was evaluated by tests on zebra fish treated with 5 and 10 mg/L of GO and GO-ZFM and on artemias salinas treated with 1, 5 and 10 mg/L of GO and GO-ZFM. There were no significant deaths due to the treatments, however more studies need to be performed to confirm the results for the toxicity of the materials to be discarded. GO-ZFM was efficient in the adsorption of methylene blue solutions containing 15, 20, 30 and 40 mg/L. |
publishDate |
2018 |
dc.date.issued.fl_str_mv |
2018-08-20 |
dc.date.accessioned.fl_str_mv |
2019-04-23T14:11:20Z |
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.citation.fl_str_mv |
DORFEY, Daiene. ADSORÇÃO DE AZUL DE METILENO EM ÓXIDO DE GRAFENO MAGNÉTICO E AVALIAÇÃO TOXICOLÓGICA DO ADSORVENTE EM PEIXES ZEBRA (Danio rerio) E EM ARTÊMIAS SALINAS. 2018. 112f. Dissertação( Programa de Pós-Graduação em Nanociências) - Universidade Franciscana, Santa Maria - RS . |
dc.identifier.uri.fl_str_mv |
http://www.tede.universidadefranciscana.edu.br:8080/handle/UFN-BDTD/731 |
identifier_str_mv |
DORFEY, Daiene. ADSORÇÃO DE AZUL DE METILENO EM ÓXIDO DE GRAFENO MAGNÉTICO E AVALIAÇÃO TOXICOLÓGICA DO ADSORVENTE EM PEIXES ZEBRA (Danio rerio) E EM ARTÊMIAS SALINAS. 2018. 112f. Dissertação( Programa de Pós-Graduação em Nanociências) - Universidade Franciscana, Santa Maria - RS . |
url |
http://www.tede.universidadefranciscana.edu.br:8080/handle/UFN-BDTD/731 |
dc.language.iso.fl_str_mv |
por |
language |
por |
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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 Franciscana |
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Programa de Pós-Graduação em Nanociências |
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UFN |
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Brasil |
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Biociências e Nanomateriais |
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Universidade Franciscana |
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