Fotocatálise heterogênea TiO2/UV para o tratamento de efluentes gerados na obtenção de membranas pela técnica de inversão de fases
Autor(a) principal: | |
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Data de Publicação: | 2021 |
Tipo de documento: | Dissertação |
Idioma: | por |
Título da fonte: | Biblioteca Digital de Teses e Dissertações da UEPB |
Texto Completo: | http://tede.bc.uepb.edu.br/jspui/handle/tede/4001 |
Resumo: | Among the technologies cleaner and research in water treatment, we highlight the Advanced Oxidative Processes (POA’s), which are based on the use of highly oxidizing species to promote a more effective degradation of the pollutant. In the present study, heterogeneous photocatalysis of titanium dioxide/Ultraviolet (TiO2/UV) was evaluated in the degradation of solvents N, N-dimethylformamide (DMF) and N-methyl-2-pyrrolidone (NMP). The TiO2 semiconductor material was characterized by X-ray fluorescence (XFR), X-ray diffraction (XRD), infrared spectroscopy with Fourier transform (FTIR), particle size distribution, surface area, volume and average pore diameter , scanning electron microscopy (SEM), differential scanning calorimetry (DSC) and thermogravimetry (TG). The effluents containing DMF and NMP were obtained from the precipitation bath generated in obtaining the membranes by the phase inversion technique. These organic effluents were evaluated by the following physicochemical parameters: hydrogen potential (pH), electrical conductivity, turbidity and chemical oxygen demand (COD). Independent operational variables such as pH, pollutant concentration (DMF and NMP) and photocatalyst load are directly related to the degradation capacity of the photocatalytic process and were evaluated by factorial design of experiments using the Statístic tool. According to the characterizations performed by FRX, DRX, FTIR, granulometric distribution, SEM, specific surface area, volume and average pore diameter, and by thermal analysis (DSC and TG) it was found that the TiO2 semiconductor had important and necessary intrinsic characteristics to be applied in photocatalytic processes. The kinetic tests were performed following the experimental planning and the kinetic data were adjusted to the pseudo-first order model. For the response of the photocatalytic degradation, all variables showed a significant effect at the 95% confidence interval. In addition, the Statístic tool detected that pH was the operational parameter that had the greatest influence and its relationship was directly proportional to the degradation of contaminants. Therefore, it was found that the heterogeneous TiO2/UV photocatalysis showed potential to be applied in photodegradation of solvents contained in effluents generated in obtaining membranes by phase inversion technique, obtaining a removal of up to 95% of the organic solvents DMF and NMP. |
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Lima, Carlos Antônio Pereira de33784752420Medeiros, Keila Machado de03575243492Oliveira, Suelem Sonaly Lima08177839462Galdino, Pablicia Oliveira00768989469Lima, Geralda Gilvania Cavalcante de3180458640407364544461Araújo, Bruna Aline2022-01-04T13:59:27Z2021-02-02ARAÚJO, Bruna Aline. Fotocatálise heterogênea TiO2/UV para o tratamento de efluentes gerados na obtenção de membranas pela técnica de inversão de fases. 2021. 96f. Dissertação (Programa de Pós-Graduação em Ciência e Tecnologia Ambiental - PPGCTA) - Universidade Estadual da Paraíba, Campina Grande, 2021.http://tede.bc.uepb.edu.br/jspui/handle/tede/4001Among the technologies cleaner and research in water treatment, we highlight the Advanced Oxidative Processes (POA’s), which are based on the use of highly oxidizing species to promote a more effective degradation of the pollutant. In the present study, heterogeneous photocatalysis of titanium dioxide/Ultraviolet (TiO2/UV) was evaluated in the degradation of solvents N, N-dimethylformamide (DMF) and N-methyl-2-pyrrolidone (NMP). The TiO2 semiconductor material was characterized by X-ray fluorescence (XFR), X-ray diffraction (XRD), infrared spectroscopy with Fourier transform (FTIR), particle size distribution, surface area, volume and average pore diameter , scanning electron microscopy (SEM), differential scanning calorimetry (DSC) and thermogravimetry (TG). The effluents containing DMF and NMP were obtained from the precipitation bath generated in obtaining the membranes by the phase inversion technique. These organic effluents were evaluated by the following physicochemical parameters: hydrogen potential (pH), electrical conductivity, turbidity and chemical oxygen demand (COD). Independent operational variables such as pH, pollutant concentration (DMF and NMP) and photocatalyst load are directly related to the degradation capacity of the photocatalytic process and were evaluated by factorial design of experiments using the Statístic tool. According to the characterizations performed by FRX, DRX, FTIR, granulometric distribution, SEM, specific surface area, volume and average pore diameter, and by thermal analysis (DSC and TG) it was found that the TiO2 semiconductor had important and necessary intrinsic characteristics to be applied in photocatalytic processes. The kinetic tests were performed following the experimental planning and the kinetic data were adjusted to the pseudo-first order model. For the response of the photocatalytic degradation, all variables showed a significant effect at the 95% confidence interval. In addition, the Statístic tool detected that pH was the operational parameter that had the greatest influence and its relationship was directly proportional to the degradation of contaminants. Therefore, it was found that the heterogeneous TiO2/UV photocatalysis showed potential to be applied in photodegradation of solvents contained in effluents generated in obtaining membranes by phase inversion technique, obtaining a removal of up to 95% of the organic solvents DMF and NMP.Dentre as tecnologias mais limpas e pesquisas em tratamento de águas se destacam os Processos Oxidativos Avançados (POA’s), os quais são baseados na utilização de espécies altamente oxidantes para promover uma degradação mais eficaz do poluente. No presente estudo, foi avaliado a fotocatálise heterogênea dióxido de titânio/Ultravioleta (TiO2/UV) na degradação dos solventes N,N-dimetilformamida (DMF) e N-metil-2-pirrolidona (NMP). O material semicondutor TiO2 foi caracterizado por fluorescência de raios - X (FRX), difração de raios - X (DRX), espectroscopia na região do infravermelho com transformada de Fourier (FTIR), distribuição granulométrica, área superficial, volume e diâmetro médio de poros, microscopia eletrônica de varredura (MEV), calorimetria exploratória diferencial (DSC) e termogravimetria (TG). Os efluentes contendo DMF e NMP foram obtidos do banho de precipitação gerados na obtenção das membranas pela técnica de inversão de fases. Estes efluente orgânicos foram avaliados pelos seguintes parâmetros físico-químicos: potencial hidrogeniônico (pH), condutividade elétrica, turbidez e demanda química de oxigênio (DQO). As variáveis operacionais independentes, como o pH, a concentração do poluente (DMF e NMP) e a carga do fotocatalisador estão diretamente relacionadas com a capacidade de degradação do processo fotocatalítico e foram avaliadas por um planejamento fatorial de experimentos pela ferramenta Statístic. De acordo com as caracterizações realizadas por FRX, DRX, FTIR, distribuição granulométrica, MEV, área superficial específica, volume e diâmetro médio de poros, e pelas análises térmicas (DSC e TG) ficou constatado que o semicondutor TiO2 apresentou características intrínsecas importantes e necessárias para ser aplicado em processos fotocatalíticos. Os ensaios cinéticos foram realizados seguindo o planejamento experimental e os dados cinéticos foram ajustados ao modelo de pseudo primeira ordem. Para a resposta da degradação fotocatalítica, todas as variáveis apresentaram efeito significativo ao intervalo de confiança de 95%. Além disso, a ferramenta Statístic detectou que o pH foi o parâmetro operacional que apresentou maior influência e sua relação foi diretamente proporcional a degradação dos contaminantes. Portanto, foi constatado que a fotocatálise heterogênea TiO2/UV apresentou potencial para ser aplicada na fotodegradação dos solventes contidos nos efluentes gerados na obtenção de membranas pela técnica de inversão de fases, obtendo uma remoção de até 95% dos solventes orgânicos DMF e NMP.Submitted by Jean Medeiros (jeanletras@uepb.edu.br) on 2021-09-13T12:04:42Z No. of bitstreams: 1 PDF - Bruna Aline Araújo.pdf: 2257009 bytes, checksum: e851de7fd586725556848c8987c0cfce (MD5)Approved for entry into archive by Secta BC (secta.csu.bc@uepb.edu.br) on 2022-01-04T13:59:10Z (GMT) No. of bitstreams: 1 PDF - Bruna Aline Araújo.pdf: 2257009 bytes, checksum: e851de7fd586725556848c8987c0cfce (MD5)Made available in DSpace on 2022-01-04T13:59:27Z (GMT). No. of bitstreams: 1 PDF - Bruna Aline Araújo.pdf: 2257009 bytes, checksum: e851de7fd586725556848c8987c0cfce (MD5) Previous issue date: 2021-02-02Coordenação de Aperfeiçoamento de Pessoal de Nível Superior - CAPESapplication/pdfporUniversidade Estadual da ParaíbaPrograma de Pós-Graduação em Ciência e Tecnologia Ambiental - PPGCTAUEPBBrasilPró-Reitoria de Pós-Graduação e Pesquisa - PRPGPFotocatálise heterogêneaTratamento de efluentesProdução de membranasHeterogeneous photocatalysisEffluent treatmentMembranes productionENGENHARIAS::ENGENHARIA SANITARIAFotocatálise heterogênea TiO2/UV para o tratamento de efluentes gerados na obtenção de membranas pela técnica de inversão de fasesinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/masterThesis44240657867457009536006006005248714503811102784980055448743338403info:eu-repo/semantics/openAccessreponame:Biblioteca Digital de Teses e Dissertações da UEPBinstname:Universidade Estadual da Paraíba (UEPB)instacron:UEPBORIGINALPDF - Bruna Aline Araújo.pdfPDF - Bruna Aline Araújo.pdfapplication/pdf2257009http://tede.bc.uepb.edu.br/jspui/bitstream/tede/4001/2/PDF+-+Bruna+Aline+Ara%C3%BAjo.pdfe851de7fd586725556848c8987c0cfceMD52LICENSElicense.txtlicense.txttext/plain; charset=utf-81960http://tede.bc.uepb.edu.br/jspui/bitstream/tede/4001/1/license.txt6052ae61e77222b2086e666b7ae213ceMD51tede/40012022-01-04 10:59:27.242oai:tede.bc.uepb.edu.br: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Biblioteca Digital de Teses e Dissertaçõeshttp://tede.bc.uepb.edu.br/jspui/PUBhttp://tede.bc.uepb.edu.br/oai/requestbc@uepb.edu.br||opendoar:2022-01-04T13:59:27Biblioteca Digital de Teses e Dissertações da UEPB - Universidade Estadual da Paraíba (UEPB)false |
dc.title.por.fl_str_mv |
Fotocatálise heterogênea TiO2/UV para o tratamento de efluentes gerados na obtenção de membranas pela técnica de inversão de fases |
title |
Fotocatálise heterogênea TiO2/UV para o tratamento de efluentes gerados na obtenção de membranas pela técnica de inversão de fases |
spellingShingle |
Fotocatálise heterogênea TiO2/UV para o tratamento de efluentes gerados na obtenção de membranas pela técnica de inversão de fases Araújo, Bruna Aline Fotocatálise heterogênea Tratamento de efluentes Produção de membranas Heterogeneous photocatalysis Effluent treatment Membranes production ENGENHARIAS::ENGENHARIA SANITARIA |
title_short |
Fotocatálise heterogênea TiO2/UV para o tratamento de efluentes gerados na obtenção de membranas pela técnica de inversão de fases |
title_full |
Fotocatálise heterogênea TiO2/UV para o tratamento de efluentes gerados na obtenção de membranas pela técnica de inversão de fases |
title_fullStr |
Fotocatálise heterogênea TiO2/UV para o tratamento de efluentes gerados na obtenção de membranas pela técnica de inversão de fases |
title_full_unstemmed |
Fotocatálise heterogênea TiO2/UV para o tratamento de efluentes gerados na obtenção de membranas pela técnica de inversão de fases |
title_sort |
Fotocatálise heterogênea TiO2/UV para o tratamento de efluentes gerados na obtenção de membranas pela técnica de inversão de fases |
author |
Araújo, Bruna Aline |
author_facet |
Araújo, Bruna Aline |
author_role |
author |
dc.contributor.advisor1.fl_str_mv |
Lima, Carlos Antônio Pereira de |
dc.contributor.advisor1ID.fl_str_mv |
33784752420 |
dc.contributor.advisor-co1.fl_str_mv |
Medeiros, Keila Machado de |
dc.contributor.advisor-co1ID.fl_str_mv |
03575243492 |
dc.contributor.referee1.fl_str_mv |
Oliveira, Suelem Sonaly Lima |
dc.contributor.referee1ID.fl_str_mv |
08177839462 |
dc.contributor.referee2.fl_str_mv |
Galdino, Pablicia Oliveira |
dc.contributor.referee2ID.fl_str_mv |
00768989469 |
dc.contributor.referee3.fl_str_mv |
Lima, Geralda Gilvania Cavalcante de |
dc.contributor.referee3ID.fl_str_mv |
31804586404 |
dc.contributor.authorID.fl_str_mv |
07364544461 |
dc.contributor.author.fl_str_mv |
Araújo, Bruna Aline |
contributor_str_mv |
Lima, Carlos Antônio Pereira de Medeiros, Keila Machado de Oliveira, Suelem Sonaly Lima Galdino, Pablicia Oliveira Lima, Geralda Gilvania Cavalcante de |
dc.subject.por.fl_str_mv |
Fotocatálise heterogênea Tratamento de efluentes Produção de membranas |
topic |
Fotocatálise heterogênea Tratamento de efluentes Produção de membranas Heterogeneous photocatalysis Effluent treatment Membranes production ENGENHARIAS::ENGENHARIA SANITARIA |
dc.subject.eng.fl_str_mv |
Heterogeneous photocatalysis Effluent treatment Membranes production |
dc.subject.cnpq.fl_str_mv |
ENGENHARIAS::ENGENHARIA SANITARIA |
description |
Among the technologies cleaner and research in water treatment, we highlight the Advanced Oxidative Processes (POA’s), which are based on the use of highly oxidizing species to promote a more effective degradation of the pollutant. In the present study, heterogeneous photocatalysis of titanium dioxide/Ultraviolet (TiO2/UV) was evaluated in the degradation of solvents N, N-dimethylformamide (DMF) and N-methyl-2-pyrrolidone (NMP). The TiO2 semiconductor material was characterized by X-ray fluorescence (XFR), X-ray diffraction (XRD), infrared spectroscopy with Fourier transform (FTIR), particle size distribution, surface area, volume and average pore diameter , scanning electron microscopy (SEM), differential scanning calorimetry (DSC) and thermogravimetry (TG). The effluents containing DMF and NMP were obtained from the precipitation bath generated in obtaining the membranes by the phase inversion technique. These organic effluents were evaluated by the following physicochemical parameters: hydrogen potential (pH), electrical conductivity, turbidity and chemical oxygen demand (COD). Independent operational variables such as pH, pollutant concentration (DMF and NMP) and photocatalyst load are directly related to the degradation capacity of the photocatalytic process and were evaluated by factorial design of experiments using the Statístic tool. According to the characterizations performed by FRX, DRX, FTIR, granulometric distribution, SEM, specific surface area, volume and average pore diameter, and by thermal analysis (DSC and TG) it was found that the TiO2 semiconductor had important and necessary intrinsic characteristics to be applied in photocatalytic processes. The kinetic tests were performed following the experimental planning and the kinetic data were adjusted to the pseudo-first order model. For the response of the photocatalytic degradation, all variables showed a significant effect at the 95% confidence interval. In addition, the Statístic tool detected that pH was the operational parameter that had the greatest influence and its relationship was directly proportional to the degradation of contaminants. Therefore, it was found that the heterogeneous TiO2/UV photocatalysis showed potential to be applied in photodegradation of solvents contained in effluents generated in obtaining membranes by phase inversion technique, obtaining a removal of up to 95% of the organic solvents DMF and NMP. |
publishDate |
2021 |
dc.date.issued.fl_str_mv |
2021-02-02 |
dc.date.accessioned.fl_str_mv |
2022-01-04T13:59:27Z |
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 |
ARAÚJO, Bruna Aline. Fotocatálise heterogênea TiO2/UV para o tratamento de efluentes gerados na obtenção de membranas pela técnica de inversão de fases. 2021. 96f. Dissertação (Programa de Pós-Graduação em Ciência e Tecnologia Ambiental - PPGCTA) - Universidade Estadual da Paraíba, Campina Grande, 2021. |
dc.identifier.uri.fl_str_mv |
http://tede.bc.uepb.edu.br/jspui/handle/tede/4001 |
identifier_str_mv |
ARAÚJO, Bruna Aline. Fotocatálise heterogênea TiO2/UV para o tratamento de efluentes gerados na obtenção de membranas pela técnica de inversão de fases. 2021. 96f. Dissertação (Programa de Pós-Graduação em Ciência e Tecnologia Ambiental - PPGCTA) - Universidade Estadual da Paraíba, Campina Grande, 2021. |
url |
http://tede.bc.uepb.edu.br/jspui/handle/tede/4001 |
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por |
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por |
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4424065786745700953 |
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600 600 600 |
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524871450381110278 |
dc.relation.cnpq.fl_str_mv |
4980055448743338403 |
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info:eu-repo/semantics/openAccess |
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openAccess |
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Universidade Estadual da Paraíba |
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Programa de Pós-Graduação em Ciência e Tecnologia Ambiental - PPGCTA |
dc.publisher.initials.fl_str_mv |
UEPB |
dc.publisher.country.fl_str_mv |
Brasil |
dc.publisher.department.fl_str_mv |
Pró-Reitoria de Pós-Graduação e Pesquisa - PRPGP |
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Universidade Estadual da Paraíba |
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