S?ntese e caracteriza??o do comp?sito ferro zero-valente nanoparticulado/carv?o ativado granulado (nFZV-CAG) e sua aplica??o para remo??o do f?rmaco nimesulida pelos processos adsor??o/redu??o e ozoniza??o catal?tica heterog?nea
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Data de Publicação: | 2016 |
Tipo de documento: | Dissertação |
Idioma: | por |
Título da fonte: | Repositório Institucional da UFVJM |
Texto Completo: | http://acervo.ufvjm.edu.br/jspui/handle/1/1313 |
Resumo: | "Resumo/Abstract", "palavras-chave/keywords" nos cap?tulos trabalho. |
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Oliveira, Fernanda Gandra deFranco, D?bora VilelaTeixeira, Flaviana Tavares VieiraFerreira, Lucas FrancoUniversidade Federal dos Vales do Jequitinhonha e Mucuri (UFVJM)Franco, D?bora Vilela2017-04-24T14:26:09Z2017-04-24T14:26:09Z20162016-09-13OLIVEIRA, Fernanda Gandra de. S?ntese e caracteriza??o do comp?sito ferro zero-valente nanoparticulado/carv?o ativado granulado (NFZV-CAG) e sua aplica??o para remo??o do f?rmaco nimesulida pelos processos adsor??o/redu??o e ozoniza??o catal?tica heterog?nea. 2016. 114 p. Disserta??o (Mestrado) ? Programa de P?s-Gradua??o em Qu?mica, Universidade Federal dos Vales do Jequitinhonha e Mucuri, Diamantina, 2016.http://acervo.ufvjm.edu.br/jspui/handle/1/1313"Resumo/Abstract", "palavras-chave/keywords" nos cap?tulos trabalho.O comp?sito nFZV-CAG foi empregado para a ozoniza??o catal?tica heterog?nea da NMS em meio aquoso. O oz?nio foi gerado por uma central geradora de oz?nio IPABRAS, alimentada com ar. Foram avaliados diferentes processos catal?ticos como O3, CAG, O3-CAG, O3-nFZV- CAG, e a varia??o da concentra??o das nFZV para remo??o da NMS. Os resultados mostraram que a combina??o do O3-nFZV-CAG foi muito eficiente levando ? mineraliza??o de aproximadamente 70% da NMS em 120 min de rea??o. Tal efici?ncia pode estar atribu?da ao processo de eletr?lise, em que o Fe0 origina Fe2+ levando ? produ??o do radical hidroxila que ? altamente oxidante, levando a destrui??o do contaminante. As rea??es seguiram a cin?tica pseudo-primeira ordem para remo??o do f?rmaco. Ap?s realizada a coleta as amostras foram submetidas a an?lise qu?mica, empregando-se as t?cnicas de espectrofotometria de UV-Vis, cromatografia l?quida de alta efici?ncia (CLAE) e a determina??o da demanda qu?mica de oxig?nio (DQO) tamb?m foi realizada.As nanopart?culas de FZV imobilizadas sobre a superf?cie do carv?o ativado (nFZV-CAG) foram sintetizadas e caracterizadas para remo??o do f?rmaco Nimesulida (NMS) em sistemas aquosos. Os estudos foram realizados em bateladas com agita??o de 250 rpm durante 120 minutos, onde foram avaliadas a efici?ncia, concentra??o (20, 25 e 30% do comp?sito) e diferentes dosagens (0,1 a 10g) de nFZV-CAG. Os resultados mostraram que a dosagem de 10 g de 20%nFZV-CAG removeu cerca de 80% da NMS 50 mg L-1 em apenas 30 minutos de rea??o, e atingindo 100% em 120 minutos. Foi observada ainda uma remo??o de 80% da DQO ao final da rea??o. As velocidades de rea??o aumentaram na medida em que foram aumentadas as dosagens do comp?sito, o que seria esperado. Por?m, com o aumento da concentra??o (%) de nFZV n?o houve aumento na velocidade das rea??es. As rea??es seguiram uma cin?tica de pseudo-primeira ordem em rela??o ? remo??o da NMS. Ap?s realizada a coleta, as amostras foram submetidas a an?lise qu?mica, empregando-se as t?cnicas de espectrofotometria de UV- VIS, cromatografia l?quida de alta efici?ncia (CLAE) e a determina??o da demanda qu?mica de oxig?nio (DQO) tamb?m foi realizada. Para caracteriza??o do comp?sito foram empregadas as t?cnicas Microscopia Eletr?nica de Varredura acoplada ? Espectrometria de Energia Dispersiva de Raios-X (MEV-EDS), que mostraram claramente a presen?a da nanopart?culas sobre a superf?cie do carv?o, e analise de superf?cie do nFZV-CAG e do CAG tamb?m foram realizadas.Submitted by Jos? Henrique Henrique (jose.neves@ufvjm.edu.br) on 2017-03-27T20:52:05Z No. of bitstreams: 2 license_rdf: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5) fernanda_gandra_oliveira.pdf: 3187185 bytes, checksum: 690bd6e7967bbab89412d221de93c88a (MD5)Approved for entry into archive by Rodrigo Martins Cruz (rodrigo.cruz@ufvjm.edu.br) on 2017-04-24T14:26:09Z (GMT) No. of bitstreams: 2 license_rdf: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5) fernanda_gandra_oliveira.pdf: 3187185 bytes, checksum: 690bd6e7967bbab89412d221de93c88a (MD5)Made available in DSpace on 2017-04-24T14:26:09Z (GMT). No. of bitstreams: 2 license_rdf: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5) fernanda_gandra_oliveira.pdf: 3187185 bytes, checksum: 690bd6e7967bbab89412d221de93c88a (MD5) Previous issue date: 2016Coordena??o de Aperfei?oamento de Pessoal de N?vel Superior (CAPES)Funda??o de Amparo ? Pesquisa do Estado de Minas Gerais (FAPEMIG)Disserta??o (Mestrado) ? Programa de P?s-Gradua??o em Qu?mica, Universidade Federal dos Vales do Jequitinhonha e Mucuri, 2016.The FZV nanoparticles immobilized onto the surface of the activated charcoal (nFZV-CAG) were synthesized and characterized for the removal of the pharmaceutical Nimesulide (NMS) in aqueous systems. The studies were performed in batch mode with stirring speeds of 250 rpm during 120 minutes, so that it was possible to evaluate efficiency, concentration (20, 25 and 30% of the composite) and different dosages (0,1 to 10g) of nFZV-CAG. The results showed that the dosage of 10g of 20%nFZV-CAG removed approximately 80% of NMS 50 mg L-1 in just 30 minutes of reaction, and reaching 100% in 120 minutes. It was still observed a removal of 80% of the COD (Chemical Oxygen Demand) at the end of the reaction. The reaction rates increased with the dosage of the composite, which was expected. Though, increasing the concentration (%) of nFZV did not result in higher reaction rates. The reactions followed a pseudo-first order kinetics for the removal of NMS. After the samples were collected, they were submitted to chemical analysis, employing the techniques of UV-VIS spectroscopy, high performance liquid chromatography (HPLC) and chemical oxygen demand (COD). In order to characterize the composite, the following techniques were used: Scanning Electron Microscopy (SEM) coupled with Energy Dispersive x-Ray spectroscopy (EDS), which showed clearly the presence of nanoparticles onto the charcoal surface. Analysis of the surface of nFZV-CAG were also performed.The composite nFZV-CAG was used for the catalytic ozonation of NMS in aqueous media. The ozone was generated by an ozone generator IPABRAS, fuelled with air. Different catalytic processes were evaluated such as O3, CAG, O3-CAG, O3-nFZV-CAG, and the variation of the nFZV concentration for the removal of NMS. The results showed that the combination of O3- nFZV-CAG was very efficient, leading to the mineralization of approximately 70% of NMS in 120 minutes of reaction. Such efficiency can be attributed to the electrolysis process, in which the Fe0 generates Fe2+ which generates hydroxyl radicals that are highly oxidant, leading to the destruction of the contaminant. The reactions followed the pseudo-first order kinetics for the removal of the pharmaceutical. After the samples were collected, they were submitted to chemical analysis such as, UV-VIS spectroscopy, high performance liquid chromatography (HPLC) and chemical oxygen demand (COD).porUFVJMA concess?o da licen?a deste item refere-se ao ? termo de autoriza??o impresso assinado pelo autor, assim como na licen?a Creative Commons, com as seguintes condi??es: Na qualidade de titular dos direitos de autor da publica??o, autorizo a Universidade Federal dos Vales do Jequitinhonha e Mucuri e o IBICT a disponibilizar por meio de seus reposit?rios, sem ressarcimento dos direitos autorais, de acordo com a Lei n? 9610/98, o texto integral da obra disponibilizada, conforme permiss?es assinaladas, para fins de leitura, impress?o e/ou download, a t?tulo de divulga??o da produ??o cient?fica brasileira, e preserva??o, a partir desta data.info:eu-repo/semantics/openAccessS?ntese e caracteriza??o do comp?sito ferro zero-valente nanoparticulado/carv?o ativado granulado (nFZV-CAG) e sua aplica??o para remo??o do f?rmaco nimesulida pelos processos adsor??o/redu??o e ozoniza??o catal?tica heterog?neainfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/masterThesisFerro zero valenteCarv?o ativado granuladoOz?nioNimesulidaRemo??oNanopart?culasde Ferro Zero ValenteRemo??oNimesulidaCarv?o Ativado GranularZero-valent Iron NanoparticlesRemovalNimesulideGranular Activated Charcoalreponame:Repositório Institucional da UFVJMinstname:Universidade Federal dos Vales do Jequitinhonha e Mucuri (UFVJM)instacron:UFVJMTEXTfernanda_gandra_oliveira.pdf.txtfernanda_gandra_oliveira.pdf.txtExtracted texttext/plain194980http://acervo.ufvjm.edu.br/jspui/bitstream/1/1313/6/fernanda_gandra_oliveira.pdf.txt9cdee0e8e163708ad55517626ce591f9MD56LICENSElicense.txtlicense.txttext/plain; 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dc.title.pt_BR.fl_str_mv |
S?ntese e caracteriza??o do comp?sito ferro zero-valente nanoparticulado/carv?o ativado granulado (nFZV-CAG) e sua aplica??o para remo??o do f?rmaco nimesulida pelos processos adsor??o/redu??o e ozoniza??o catal?tica heterog?nea |
title |
S?ntese e caracteriza??o do comp?sito ferro zero-valente nanoparticulado/carv?o ativado granulado (nFZV-CAG) e sua aplica??o para remo??o do f?rmaco nimesulida pelos processos adsor??o/redu??o e ozoniza??o catal?tica heterog?nea |
spellingShingle |
S?ntese e caracteriza??o do comp?sito ferro zero-valente nanoparticulado/carv?o ativado granulado (nFZV-CAG) e sua aplica??o para remo??o do f?rmaco nimesulida pelos processos adsor??o/redu??o e ozoniza??o catal?tica heterog?nea Oliveira, Fernanda Gandra de Ferro zero valente Carv?o ativado granulado Oz?nio Nimesulida Remo??o Nanopart?culasde Ferro Zero Valente Remo??o Nimesulida Carv?o Ativado Granular Zero-valent Iron Nanoparticles Removal Nimesulide Granular Activated Charcoal |
title_short |
S?ntese e caracteriza??o do comp?sito ferro zero-valente nanoparticulado/carv?o ativado granulado (nFZV-CAG) e sua aplica??o para remo??o do f?rmaco nimesulida pelos processos adsor??o/redu??o e ozoniza??o catal?tica heterog?nea |
title_full |
S?ntese e caracteriza??o do comp?sito ferro zero-valente nanoparticulado/carv?o ativado granulado (nFZV-CAG) e sua aplica??o para remo??o do f?rmaco nimesulida pelos processos adsor??o/redu??o e ozoniza??o catal?tica heterog?nea |
title_fullStr |
S?ntese e caracteriza??o do comp?sito ferro zero-valente nanoparticulado/carv?o ativado granulado (nFZV-CAG) e sua aplica??o para remo??o do f?rmaco nimesulida pelos processos adsor??o/redu??o e ozoniza??o catal?tica heterog?nea |
title_full_unstemmed |
S?ntese e caracteriza??o do comp?sito ferro zero-valente nanoparticulado/carv?o ativado granulado (nFZV-CAG) e sua aplica??o para remo??o do f?rmaco nimesulida pelos processos adsor??o/redu??o e ozoniza??o catal?tica heterog?nea |
title_sort |
S?ntese e caracteriza??o do comp?sito ferro zero-valente nanoparticulado/carv?o ativado granulado (nFZV-CAG) e sua aplica??o para remo??o do f?rmaco nimesulida pelos processos adsor??o/redu??o e ozoniza??o catal?tica heterog?nea |
author |
Oliveira, Fernanda Gandra de |
author_facet |
Oliveira, Fernanda Gandra de |
author_role |
author |
dc.contributor.references.none.fl_str_mv |
Franco, D?bora Vilela Teixeira, Flaviana Tavares Vieira Ferreira, Lucas Franco |
dc.contributor.institution.pt_BR.fl_str_mv |
Universidade Federal dos Vales do Jequitinhonha e Mucuri (UFVJM) |
dc.contributor.author.fl_str_mv |
Oliveira, Fernanda Gandra de |
dc.contributor.advisor1.fl_str_mv |
Franco, D?bora Vilela |
contributor_str_mv |
Franco, D?bora Vilela |
dc.subject.keyword.pt_BR.fl_str_mv |
Ferro zero valente Carv?o ativado granulado Oz?nio Nimesulida Remo??o |
topic |
Ferro zero valente Carv?o ativado granulado Oz?nio Nimesulida Remo??o Nanopart?culasde Ferro Zero Valente Remo??o Nimesulida Carv?o Ativado Granular Zero-valent Iron Nanoparticles Removal Nimesulide Granular Activated Charcoal |
dc.subject.keyword.pt_br.fl_str_mv |
Nanopart?culasde Ferro Zero Valente Remo??o Nimesulida Carv?o Ativado Granular |
dc.subject.keyword.en.fl_str_mv |
Zero-valent Iron Nanoparticles Removal Nimesulide Granular Activated Charcoal |
description |
"Resumo/Abstract", "palavras-chave/keywords" nos cap?tulos trabalho. |
publishDate |
2016 |
dc.date.submitted.none.fl_str_mv |
2016-09-13 |
dc.date.issued.fl_str_mv |
2016 |
dc.date.accessioned.fl_str_mv |
2017-04-24T14:26:09Z |
dc.date.available.fl_str_mv |
2017-04-24T14:26:09Z |
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 |
OLIVEIRA, Fernanda Gandra de. S?ntese e caracteriza??o do comp?sito ferro zero-valente nanoparticulado/carv?o ativado granulado (NFZV-CAG) e sua aplica??o para remo??o do f?rmaco nimesulida pelos processos adsor??o/redu??o e ozoniza??o catal?tica heterog?nea. 2016. 114 p. Disserta??o (Mestrado) ? Programa de P?s-Gradua??o em Qu?mica, Universidade Federal dos Vales do Jequitinhonha e Mucuri, Diamantina, 2016. |
dc.identifier.uri.fl_str_mv |
http://acervo.ufvjm.edu.br/jspui/handle/1/1313 |
identifier_str_mv |
OLIVEIRA, Fernanda Gandra de. S?ntese e caracteriza??o do comp?sito ferro zero-valente nanoparticulado/carv?o ativado granulado (NFZV-CAG) e sua aplica??o para remo??o do f?rmaco nimesulida pelos processos adsor??o/redu??o e ozoniza??o catal?tica heterog?nea. 2016. 114 p. Disserta??o (Mestrado) ? Programa de P?s-Gradua??o em Qu?mica, Universidade Federal dos Vales do Jequitinhonha e Mucuri, Diamantina, 2016. |
url |
http://acervo.ufvjm.edu.br/jspui/handle/1/1313 |
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 |
UFVJM |
publisher.none.fl_str_mv |
UFVJM |
dc.source.none.fl_str_mv |
reponame:Repositório Institucional da UFVJM instname:Universidade Federal dos Vales do Jequitinhonha e Mucuri (UFVJM) instacron:UFVJM |
instname_str |
Universidade Federal dos Vales do Jequitinhonha e Mucuri (UFVJM) |
instacron_str |
UFVJM |
institution |
UFVJM |
reponame_str |
Repositório Institucional da UFVJM |
collection |
Repositório Institucional da UFVJM |
bitstream.url.fl_str_mv |
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