Degradação de compostos orgânicos voláteis usando o catalisador SBA-15 contendo titânio
Autor(a) principal: | |
---|---|
Data de Publicação: | 2012 |
Tipo de documento: | Dissertação |
Idioma: | por |
Título da fonte: | Repositório Institucional da UFRN |
Texto Completo: | https://repositorio.ufrn.br/jspui/handle/123456789/17678 |
Resumo: | The groundwater pollution arising due to fuel leaks gas stations has presented a problem aggravating. Increasingly studies related to environmental problems such accidents and seek to propose some solutions for the treatment of groundwater and soils that are contaminated by gasoline. This study evaluated the use of molecular sieve TiSBA-15 as a catalyst for the reaction of removing of volatile organic compounds, particularly benzene, toluene, ethylbenzene and xylenes, known as BTEX, one of the main pollutants found in groundwater. The catalyst was synthesized by the method post-synthesis techniques and characterized by XSD, TG/DTG, adsorption/desorption of N2, XRF-EDX, for checking the incorporation of titanium and formation of the structure of the catalyst. The reaction occurred with the presence of hydrogen peroxide, H2O2, in aqueous medium to form hydroxyl radicals, which are needed in the process of removal of BTEX compounds. The catalytic reaction was carried out for 5 hours at 60 °C, pH to 3.0, and analyzes of the compounds were made in a gas chromatograph with a flame detection means photoionization static headspace (HS-GC-PID). The catalytic tests have shown the efficacy of using this type of catalyst for the removal of these volatile organic compounds, having a removal rate of 90.60% in the range where the catalyst was studied TiSBA-15(5,0) |
id |
UFRN_e52946e96384cf19fe7ed6f1a3a89d73 |
---|---|
oai_identifier_str |
oai:https://repositorio.ufrn.br:123456789/17678 |
network_acronym_str |
UFRN |
network_name_str |
Repositório Institucional da UFRN |
repository_id_str |
|
spelling |
Alves, Camila Graciele Rolimhttp://lattes.cnpq.br/7813387926325277http://lattes.cnpq.br/9770622597949866Guedes, Ana Paula de Melo Alveshttp://lattes.cnpq.br/5738717177200782Castro, Francisco Laerte dehttp://lattes.cnpq.br/2913544384537886Araújo, Antônio Souza de2014-12-17T15:42:01Z2013-04-192014-12-17T15:42:01Z2012-05-02ALVES, Camila Graciele Rolim. Degradação de compostos orgânicos voláteis usando o catalisador SBA-15 contendo titânio. 2012. 94 f. Dissertação (Mestrado em Físico-Química; Química) - Universidade Federal do Rio Grande do Norte, Natal, 2012.https://repositorio.ufrn.br/jspui/handle/123456789/17678The groundwater pollution arising due to fuel leaks gas stations has presented a problem aggravating. Increasingly studies related to environmental problems such accidents and seek to propose some solutions for the treatment of groundwater and soils that are contaminated by gasoline. This study evaluated the use of molecular sieve TiSBA-15 as a catalyst for the reaction of removing of volatile organic compounds, particularly benzene, toluene, ethylbenzene and xylenes, known as BTEX, one of the main pollutants found in groundwater. The catalyst was synthesized by the method post-synthesis techniques and characterized by XSD, TG/DTG, adsorption/desorption of N2, XRF-EDX, for checking the incorporation of titanium and formation of the structure of the catalyst. The reaction occurred with the presence of hydrogen peroxide, H2O2, in aqueous medium to form hydroxyl radicals, which are needed in the process of removal of BTEX compounds. The catalytic reaction was carried out for 5 hours at 60 °C, pH to 3.0, and analyzes of the compounds were made in a gas chromatograph with a flame detection means photoionization static headspace (HS-GC-PID). The catalytic tests have shown the efficacy of using this type of catalyst for the removal of these volatile organic compounds, having a removal rate of 90.60% in the range where the catalyst was studied TiSBA-15(5,0)A poluição das águas subterrâneas devido a decorrentes vazamentos de combustível por postos de gasolina tem se apresentado um problema agravante. Cada vez mais estudos relacionam problemas ambientais com tais acidentes e procuram propor algumas soluções para o tratamento das águas subterrâneas e solos que são contaminados pela gasolina. Este trabalho avalia o uso da peneira molecular TiSBA-15 como catalisador da reação de remoção de compostos orgânicos voláteis, especificamente benzeno, tolueno, etilbenzeno e xilenos, conhecidos como BTEX, um dos principais poluentes encontrados em águas subterrâneas. O catalisador foi sintetizado pelo método pós-síntese e caracterizado pelas técnicas de DRX, TG/DTG, adsorção/dessorção de N2, e FRX-EDX. O estudo da atividade catalítica da TiSBA- 15 ocorreu com a presença de peróxido de hidrogênio, H2O2, em meio aquoso, para a formação de radicais hidroxilas, os quais serão necessários no processo de remoção dos compostos BTEX. A reação catalítica foi realizada durante 5h a 60 °C, pH igual a 5,0, e as análises dos compostos foram feitas em um cromatógrafo a gás com detecção por fotoionização de chama via headspace estático (HS-GC-PID). Os testes catalíticos mostraram a eficácia no uso deste tipo de catalisador para a remoção desses compostos orgânicos voláteis, apresentando uma taxa de remoção na faixa de 90,60%, onde o catalisador em estudo foi o TiSBA-15(5,0)Coordenação de Aperfeiçoamento de Pessoal de Nível Superiorapplication/pdfporUniversidade Federal do Rio Grande do NortePrograma de Pós-Graduação em QuímicaUFRNBRFísico-Química; QuímicaCompostos orgânicos voláteis. BTEX. TiSBA-15Volatile organic compounds. BTEX. TiSBA-15CNPQ::CIENCIAS EXATAS E DA TERRA::QUIMICADegradação de compostos orgânicos voláteis usando o catalisador SBA-15 contendo titânioinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/masterThesisinfo:eu-repo/semantics/openAccessreponame:Repositório Institucional da UFRNinstname:Universidade Federal do Rio Grande do Norte (UFRN)instacron:UFRNORIGINALCamilaGRA_DISSERT.pdfapplication/pdf2325529https://repositorio.ufrn.br/bitstream/123456789/17678/1/CamilaGRA_DISSERT.pdf83d27b47b244a6da7127c42df79472b8MD51TEXTCamilaGRA_DISSERT.pdf.txtCamilaGRA_DISSERT.pdf.txtExtracted texttext/plain159550https://repositorio.ufrn.br/bitstream/123456789/17678/6/CamilaGRA_DISSERT.pdf.txt0cbbe7b1a2e8ddbf3c9801ec1912819cMD56THUMBNAILCamilaGRA_DISSERT.pdf.jpgCamilaGRA_DISSERT.pdf.jpgIM Thumbnailimage/jpeg5355https://repositorio.ufrn.br/bitstream/123456789/17678/7/CamilaGRA_DISSERT.pdf.jpgd9364d9fda51d83caa1dbeb1e1b92c8eMD57123456789/176782017-11-04 11:40:22.507oai:https://repositorio.ufrn.br:123456789/17678Repositório de PublicaçõesPUBhttp://repositorio.ufrn.br/oai/opendoar:2017-11-04T14:40:22Repositório Institucional da UFRN - Universidade Federal do Rio Grande do Norte (UFRN)false |
dc.title.por.fl_str_mv |
Degradação de compostos orgânicos voláteis usando o catalisador SBA-15 contendo titânio |
title |
Degradação de compostos orgânicos voláteis usando o catalisador SBA-15 contendo titânio |
spellingShingle |
Degradação de compostos orgânicos voláteis usando o catalisador SBA-15 contendo titânio Alves, Camila Graciele Rolim Compostos orgânicos voláteis. BTEX. TiSBA-15 Volatile organic compounds. BTEX. TiSBA-15 CNPQ::CIENCIAS EXATAS E DA TERRA::QUIMICA |
title_short |
Degradação de compostos orgânicos voláteis usando o catalisador SBA-15 contendo titânio |
title_full |
Degradação de compostos orgânicos voláteis usando o catalisador SBA-15 contendo titânio |
title_fullStr |
Degradação de compostos orgânicos voláteis usando o catalisador SBA-15 contendo titânio |
title_full_unstemmed |
Degradação de compostos orgânicos voláteis usando o catalisador SBA-15 contendo titânio |
title_sort |
Degradação de compostos orgânicos voláteis usando o catalisador SBA-15 contendo titânio |
author |
Alves, Camila Graciele Rolim |
author_facet |
Alves, Camila Graciele Rolim |
author_role |
author |
dc.contributor.authorID.por.fl_str_mv |
|
dc.contributor.authorLattes.por.fl_str_mv |
http://lattes.cnpq.br/7813387926325277 |
dc.contributor.advisorID.por.fl_str_mv |
|
dc.contributor.advisorLattes.por.fl_str_mv |
http://lattes.cnpq.br/9770622597949866 |
dc.contributor.referees1.pt_BR.fl_str_mv |
Guedes, Ana Paula de Melo Alves |
dc.contributor.referees1ID.por.fl_str_mv |
|
dc.contributor.referees1Lattes.por.fl_str_mv |
http://lattes.cnpq.br/5738717177200782 |
dc.contributor.referees2.pt_BR.fl_str_mv |
Castro, Francisco Laerte de |
dc.contributor.referees2ID.por.fl_str_mv |
|
dc.contributor.referees2Lattes.por.fl_str_mv |
http://lattes.cnpq.br/2913544384537886 |
dc.contributor.author.fl_str_mv |
Alves, Camila Graciele Rolim |
dc.contributor.advisor1.fl_str_mv |
Araújo, Antônio Souza de |
contributor_str_mv |
Araújo, Antônio Souza de |
dc.subject.por.fl_str_mv |
Compostos orgânicos voláteis. BTEX. TiSBA-15 |
topic |
Compostos orgânicos voláteis. BTEX. TiSBA-15 Volatile organic compounds. BTEX. TiSBA-15 CNPQ::CIENCIAS EXATAS E DA TERRA::QUIMICA |
dc.subject.eng.fl_str_mv |
Volatile organic compounds. BTEX. TiSBA-15 |
dc.subject.cnpq.fl_str_mv |
CNPQ::CIENCIAS EXATAS E DA TERRA::QUIMICA |
description |
The groundwater pollution arising due to fuel leaks gas stations has presented a problem aggravating. Increasingly studies related to environmental problems such accidents and seek to propose some solutions for the treatment of groundwater and soils that are contaminated by gasoline. This study evaluated the use of molecular sieve TiSBA-15 as a catalyst for the reaction of removing of volatile organic compounds, particularly benzene, toluene, ethylbenzene and xylenes, known as BTEX, one of the main pollutants found in groundwater. The catalyst was synthesized by the method post-synthesis techniques and characterized by XSD, TG/DTG, adsorption/desorption of N2, XRF-EDX, for checking the incorporation of titanium and formation of the structure of the catalyst. The reaction occurred with the presence of hydrogen peroxide, H2O2, in aqueous medium to form hydroxyl radicals, which are needed in the process of removal of BTEX compounds. The catalytic reaction was carried out for 5 hours at 60 °C, pH to 3.0, and analyzes of the compounds were made in a gas chromatograph with a flame detection means photoionization static headspace (HS-GC-PID). The catalytic tests have shown the efficacy of using this type of catalyst for the removal of these volatile organic compounds, having a removal rate of 90.60% in the range where the catalyst was studied TiSBA-15(5,0) |
publishDate |
2012 |
dc.date.issued.fl_str_mv |
2012-05-02 |
dc.date.available.fl_str_mv |
2013-04-19 2014-12-17T15:42:01Z |
dc.date.accessioned.fl_str_mv |
2014-12-17T15:42:01Z |
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 |
ALVES, Camila Graciele Rolim. Degradação de compostos orgânicos voláteis usando o catalisador SBA-15 contendo titânio. 2012. 94 f. Dissertação (Mestrado em Físico-Química; Química) - Universidade Federal do Rio Grande do Norte, Natal, 2012. |
dc.identifier.uri.fl_str_mv |
https://repositorio.ufrn.br/jspui/handle/123456789/17678 |
identifier_str_mv |
ALVES, Camila Graciele Rolim. Degradação de compostos orgânicos voláteis usando o catalisador SBA-15 contendo titânio. 2012. 94 f. Dissertação (Mestrado em Físico-Química; Química) - Universidade Federal do Rio Grande do Norte, Natal, 2012. |
url |
https://repositorio.ufrn.br/jspui/handle/123456789/17678 |
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.format.none.fl_str_mv |
application/pdf |
dc.publisher.none.fl_str_mv |
Universidade Federal do Rio Grande do Norte |
dc.publisher.program.fl_str_mv |
Programa de Pós-Graduação em Química |
dc.publisher.initials.fl_str_mv |
UFRN |
dc.publisher.country.fl_str_mv |
BR |
dc.publisher.department.fl_str_mv |
Físico-Química; Química |
publisher.none.fl_str_mv |
Universidade Federal do Rio Grande do Norte |
dc.source.none.fl_str_mv |
reponame:Repositório Institucional da UFRN instname:Universidade Federal do Rio Grande do Norte (UFRN) instacron:UFRN |
instname_str |
Universidade Federal do Rio Grande do Norte (UFRN) |
instacron_str |
UFRN |
institution |
UFRN |
reponame_str |
Repositório Institucional da UFRN |
collection |
Repositório Institucional da UFRN |
bitstream.url.fl_str_mv |
https://repositorio.ufrn.br/bitstream/123456789/17678/1/CamilaGRA_DISSERT.pdf https://repositorio.ufrn.br/bitstream/123456789/17678/6/CamilaGRA_DISSERT.pdf.txt https://repositorio.ufrn.br/bitstream/123456789/17678/7/CamilaGRA_DISSERT.pdf.jpg |
bitstream.checksum.fl_str_mv |
83d27b47b244a6da7127c42df79472b8 0cbbe7b1a2e8ddbf3c9801ec1912819c d9364d9fda51d83caa1dbeb1e1b92c8e |
bitstream.checksumAlgorithm.fl_str_mv |
MD5 MD5 MD5 |
repository.name.fl_str_mv |
Repositório Institucional da UFRN - Universidade Federal do Rio Grande do Norte (UFRN) |
repository.mail.fl_str_mv |
|
_version_ |
1802117627469889536 |