Estudo do desempenho de um analisador de mobilidade elétrica de nanopartículas
Ano de defesa: | 2015 |
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Autor(a) principal: | |
Orientador(a): | |
Banca de defesa: | , , |
Tipo de documento: | Dissertação |
Tipo de acesso: | Acesso aberto |
Idioma: | por |
Instituição de defesa: |
Universidade Federal de Uberlândia
|
Programa de Pós-Graduação: |
Programa de Pós-graduação em Engenharia Química
|
Departamento: |
Engenharias
|
País: |
BR
|
Palavras-chave em Português: | |
Palavras-chave em Inglês: | |
Área do conhecimento CNPq: | |
Link de acesso: | https://repositorio.ufu.br/handle/123456789/15236 https://doi.org/10.14393/ufu.di.2015.81 |
Resumo: | Electrical Mobility Analyzer is a device used to produce aerosol nanoparticles in narrow size ranges previously set as a function of the electrical charges of the particles in order to produce desirable monodisperse chains. The polydisperse particles entering this equipment make a trajectory that is a function of the electric field strength and its electrical mobility, and this trend is a function of the aerosol particle diameter. The importance of producing monodisperse aerosols is linked to its application in the calibration of high-precision equipment in this era of nanotechnology. Another relevant factor is directly related to the issue of occupational health, in which nanoparticles may pose a risk to human health as present in the breathing air at a concentration higher than that allowed by the environmental legislation. The electric mobility separation process involves four main stages: (i) generating polydisperse nanoparticles; (ii) the stability of the particles loads; (iii) separation by electric mobility, and (iv) counting the particles produced to calculate efficiency. Commercial analyzers (Differential Mobility Analyzer) are devices with very high prices in the market due to the latest technology concerning them, therefore, the present study sought to develop and optimize an analyzer with its own technology and low cost. For this purpose, starting from a polydisperse aerosol (broad size range) produced with nanoparticles at different NaCl concentrations yielded a monodisperse aerosol (narrow size range) via electric mobility rating. The system used was basically concentric cylinders of stainless steel with polydisperse nanoparticles being fed into the annular region, while ultrapure air was fed to the system. The electrically charged particles were attracted or repelled the central electrode according to their acquired loads. Design calculations led to the disposal of a collection hole in the system that allowed the classification of patículas by size ranges in the nanometer scale. After the experiments conducted in FEQUI / UFU, it was found that the amount of nanoparticles produced in the system was a function of concentration of NaCl used in solution as well as the average size of the particles produced. In addition, tests were performed in the Department of Chemical Engineering, Federal University of São Carlos (DEQ / UFSCar), using a commercial analyzer (SMPS) TSI brand. These tests helped the comparison of experimental results with theoretical, showing that this Electric Mobility Analyzer was quite efficient in the production of monodisperse nanoaerossóis, priced less than 10% of the value of commercial equipment. A mobility swing nanoparticle classification, based on the load distribution has been proposed to estimate size distributions produced, which is representative for balance and excessive monodisperse aerosol. |
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2016-06-22T18:41:52Z2015-04-232016-06-22T18:41:52Z2015-02-20CAMARGO, Eduarda Cristina de Matos. Estudo do desempenho de um analisador de mobilidade elétrica de nanopartículas. 2015. 102 f. Dissertação (Mestrado em Engenharias) - Universidade Federal de Uberlândia, Uberlândia, 2015. Disponível em: https://doi.org/10.14393/ufu.di.2015.81https://repositorio.ufu.br/handle/123456789/15236https://doi.org/10.14393/ufu.di.2015.81Electrical Mobility Analyzer is a device used to produce aerosol nanoparticles in narrow size ranges previously set as a function of the electrical charges of the particles in order to produce desirable monodisperse chains. The polydisperse particles entering this equipment make a trajectory that is a function of the electric field strength and its electrical mobility, and this trend is a function of the aerosol particle diameter. The importance of producing monodisperse aerosols is linked to its application in the calibration of high-precision equipment in this era of nanotechnology. Another relevant factor is directly related to the issue of occupational health, in which nanoparticles may pose a risk to human health as present in the breathing air at a concentration higher than that allowed by the environmental legislation. The electric mobility separation process involves four main stages: (i) generating polydisperse nanoparticles; (ii) the stability of the particles loads; (iii) separation by electric mobility, and (iv) counting the particles produced to calculate efficiency. Commercial analyzers (Differential Mobility Analyzer) are devices with very high prices in the market due to the latest technology concerning them, therefore, the present study sought to develop and optimize an analyzer with its own technology and low cost. For this purpose, starting from a polydisperse aerosol (broad size range) produced with nanoparticles at different NaCl concentrations yielded a monodisperse aerosol (narrow size range) via electric mobility rating. The system used was basically concentric cylinders of stainless steel with polydisperse nanoparticles being fed into the annular region, while ultrapure air was fed to the system. The electrically charged particles were attracted or repelled the central electrode according to their acquired loads. Design calculations led to the disposal of a collection hole in the system that allowed the classification of patículas by size ranges in the nanometer scale. After the experiments conducted in FEQUI / UFU, it was found that the amount of nanoparticles produced in the system was a function of concentration of NaCl used in solution as well as the average size of the particles produced. In addition, tests were performed in the Department of Chemical Engineering, Federal University of São Carlos (DEQ / UFSCar), using a commercial analyzer (SMPS) TSI brand. These tests helped the comparison of experimental results with theoretical, showing that this Electric Mobility Analyzer was quite efficient in the production of monodisperse nanoaerossóis, priced less than 10% of the value of commercial equipment. A mobility swing nanoparticle classification, based on the load distribution has been proposed to estimate size distributions produced, which is representative for balance and excessive monodisperse aerosol.Analisador de Mobilidade Elétrica é um equipamento utilizado para produzir nanopartículas de aerossóis em estreitas faixas de tamanho, previamente estabelecidas como função das cargas elétricas das partículas, a fim de se produzir correntes monodispersas desejáveis. As partículas polidispersas que entram neste equipamento fazem uma trajetória que é função da intensidade do campo elétrico e de sua mobilidade elétrica, sendo que esta trajetória é função apenas do diâmetro da partícula de aerossol. A importância de se produzir aerossóis monodispersos está ligada à sua aplicação na calibração de equipamentos de alta precisão na presente era da nanotecnologia. Outro fator relevante está diretamente relacionado à questão da saúde ocupacional, na qual nanopartículas podem oferecer risco à saúde humana enquanto presentes no ar respirável numa concentração acima da permitida pela legislação ambiental. O processo de separação por mobilidade elétrica engloba quatro estágios principais: (i) geração de nanopartículas polidispersas; (ii) estabilidade de cargas das partículas; (iii) separação por mobilidade elétrica e, (iv) contagem das partículas produzidas para cálculos de eficiência. Os analisadores comerciais (Differential Mobility Analyzer) são equipamentos com preços muito elevados no mercado devido a tecnologia de ponta a que são submetidos, por isso, o presente trabalho buscou desenvolver e otimizar um analisador com tecnologia própria e de baixo custo. Para tanto, partindo-se de um aerossol polidisperso (ampla faixa de tamanho) produzido com nanopartículas de NaCl em diferentes concentrações, obteve-se um aerossol monodisperso (estreita faixa de tamanhos), via classificação por mobilidade elétrica. O sistema utilizado consistia basicamente de cilindros concêntricos de aço inoxidável com nanopartículas polidispersas sendo alimentadas na região anular, ao passo que ar ultrapuro era alimentado ao sistema. As partículas eletricamente carregadas foram atraídas ou repelidas no eletrodo central de acordo com suas cargas adquiridas. Cálculos de projeto levaram a disposição de um orifício de coleta no sistema que possibilitou a classificação das patículas por faixas de tamanho na escala nanométrica. Após os experimentos realizados na FEQUI/UFU, constatou-se que a quantidade de nanopartículas produzida no sistema era função da concentração de NaCl utilizado na solução, assim como o tamanho médio das partículas produzidas. Paralelamente, testes foram realizados no Departamento de Engenharia Química da Universidade Federal de São Carlos (DEQ/UFSCar), utilizando um analisador comercial (SMPS) da marca TSI. Estes testes auxiliaram na comparação dos resultados experimentais com os teóricos, mostrando que o presente Analisador de Mobilidade Elétrica foi bastante eficiente na produção de nanoaerossóis monodispersos, com preço inferior a 10% do valor do equipamento comercial. Um balanço de mobilidade para classificação de nanopartículas, baseado nas distribuições de cargas, foi proposto para estimativas das distribuições de tamanho produzido, sendo este balanço representativo para o aerossol monodisperso e de excesso.Fundação de Amparo a Pesquisa do Estado de Minas GeraisMestre em Engenharia Químicaapplication/pdfporUniversidade Federal de UberlândiaPrograma de Pós-graduação em Engenharia QuímicaUFUBREngenhariasNanopartículasAerossóisNanoparticlesAerosolsCNPQ::ENGENHARIAS::ENGENHARIA QUIMICAEstudo do desempenho de um analisador de mobilidade elétrica de nanopartículasinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/masterThesisDamasceno, João Jorge Ribeirohttp://buscatextual.cnpq.br/buscatextual/visualizacv.do?id=K4780258E5Arouca, Fábio de Oliveirahttp://buscatextual.cnpq.br/buscatextual/visualizacv.do?id=K4189392Y6Vieira, Luiz Gustavo Martinshttp://buscatextual.cnpq.br/buscatextual/visualizacv.do?id=K4767723D6Batista, Fabiana Regina Xavierhttp://buscatextual.cnpq.br/buscatextual/visualizacv.do?id=K4779058Z2Arruda, Edu Barbosahttp://buscatextual.cnpq.br/buscatextual/visualizacv.do?id=K4766612J4http://buscatextual.cnpq.br/buscatextual/visualizacv.do?id=K4402058H2Camargo, Eduarda Cristina de Matos81756947info:eu-repo/semantics/openAccessreponame:Repositório Institucional da UFUinstname:Universidade Federal de Uberlândia (UFU)instacron:UFUTHUMBNAILEstudoDesempenhoAnalisador.pdf.jpgEstudoDesempenhoAnalisador.pdf.jpgGenerated Thumbnailimage/jpeg1286https://repositorio.ufu.br/bitstream/123456789/15236/3/EstudoDesempenhoAnalisador.pdf.jpg89f12c0b38380f81f926d3865260a7abMD53ORIGINALEstudoDesempenhoAnalisador.pdfapplication/pdf2438225https://repositorio.ufu.br/bitstream/123456789/15236/1/EstudoDesempenhoAnalisador.pdf8ffc9c9a56fc8c4e78fc52350cc9e31fMD51TEXTEstudoDesempenhoAnalisador.pdf.txtEstudoDesempenhoAnalisador.pdf.txtExtracted texttext/plain166570https://repositorio.ufu.br/bitstream/123456789/15236/2/EstudoDesempenhoAnalisador.pdf.txtd178f6f3ed14b6d6a709fcce5bb1fd5aMD52123456789/152362021-05-17 13:13:21.06oai:repositorio.ufu.br:123456789/15236Repositório InstitucionalONGhttp://repositorio.ufu.br/oai/requestdiinf@dirbi.ufu.bropendoar:2021-05-17T16:13:21Repositório Institucional da UFU - Universidade Federal de Uberlândia (UFU)false |
dc.title.por.fl_str_mv |
Estudo do desempenho de um analisador de mobilidade elétrica de nanopartículas |
title |
Estudo do desempenho de um analisador de mobilidade elétrica de nanopartículas |
spellingShingle |
Estudo do desempenho de um analisador de mobilidade elétrica de nanopartículas Camargo, Eduarda Cristina de Matos Nanopartículas Aerossóis Nanoparticles Aerosols CNPQ::ENGENHARIAS::ENGENHARIA QUIMICA |
title_short |
Estudo do desempenho de um analisador de mobilidade elétrica de nanopartículas |
title_full |
Estudo do desempenho de um analisador de mobilidade elétrica de nanopartículas |
title_fullStr |
Estudo do desempenho de um analisador de mobilidade elétrica de nanopartículas |
title_full_unstemmed |
Estudo do desempenho de um analisador de mobilidade elétrica de nanopartículas |
title_sort |
Estudo do desempenho de um analisador de mobilidade elétrica de nanopartículas |
author |
Camargo, Eduarda Cristina de Matos |
author_facet |
Camargo, Eduarda Cristina de Matos |
author_role |
author |
dc.contributor.advisor-co1.fl_str_mv |
Damasceno, João Jorge Ribeiro |
dc.contributor.advisor-co1Lattes.fl_str_mv |
http://buscatextual.cnpq.br/buscatextual/visualizacv.do?id=K4780258E5 |
dc.contributor.advisor1.fl_str_mv |
Arouca, Fábio de Oliveira |
dc.contributor.advisor1Lattes.fl_str_mv |
http://buscatextual.cnpq.br/buscatextual/visualizacv.do?id=K4189392Y6 |
dc.contributor.referee1.fl_str_mv |
Vieira, Luiz Gustavo Martins |
dc.contributor.referee1Lattes.fl_str_mv |
http://buscatextual.cnpq.br/buscatextual/visualizacv.do?id=K4767723D6 |
dc.contributor.referee2.fl_str_mv |
Batista, Fabiana Regina Xavier |
dc.contributor.referee2Lattes.fl_str_mv |
http://buscatextual.cnpq.br/buscatextual/visualizacv.do?id=K4779058Z2 |
dc.contributor.referee3.fl_str_mv |
Arruda, Edu Barbosa |
dc.contributor.referee3Lattes.fl_str_mv |
http://buscatextual.cnpq.br/buscatextual/visualizacv.do?id=K4766612J4 |
dc.contributor.authorLattes.fl_str_mv |
http://buscatextual.cnpq.br/buscatextual/visualizacv.do?id=K4402058H2 |
dc.contributor.author.fl_str_mv |
Camargo, Eduarda Cristina de Matos |
contributor_str_mv |
Damasceno, João Jorge Ribeiro Arouca, Fábio de Oliveira Vieira, Luiz Gustavo Martins Batista, Fabiana Regina Xavier Arruda, Edu Barbosa |
dc.subject.por.fl_str_mv |
Nanopartículas Aerossóis |
topic |
Nanopartículas Aerossóis Nanoparticles Aerosols CNPQ::ENGENHARIAS::ENGENHARIA QUIMICA |
dc.subject.eng.fl_str_mv |
Nanoparticles Aerosols |
dc.subject.cnpq.fl_str_mv |
CNPQ::ENGENHARIAS::ENGENHARIA QUIMICA |
description |
Electrical Mobility Analyzer is a device used to produce aerosol nanoparticles in narrow size ranges previously set as a function of the electrical charges of the particles in order to produce desirable monodisperse chains. The polydisperse particles entering this equipment make a trajectory that is a function of the electric field strength and its electrical mobility, and this trend is a function of the aerosol particle diameter. The importance of producing monodisperse aerosols is linked to its application in the calibration of high-precision equipment in this era of nanotechnology. Another relevant factor is directly related to the issue of occupational health, in which nanoparticles may pose a risk to human health as present in the breathing air at a concentration higher than that allowed by the environmental legislation. The electric mobility separation process involves four main stages: (i) generating polydisperse nanoparticles; (ii) the stability of the particles loads; (iii) separation by electric mobility, and (iv) counting the particles produced to calculate efficiency. Commercial analyzers (Differential Mobility Analyzer) are devices with very high prices in the market due to the latest technology concerning them, therefore, the present study sought to develop and optimize an analyzer with its own technology and low cost. For this purpose, starting from a polydisperse aerosol (broad size range) produced with nanoparticles at different NaCl concentrations yielded a monodisperse aerosol (narrow size range) via electric mobility rating. The system used was basically concentric cylinders of stainless steel with polydisperse nanoparticles being fed into the annular region, while ultrapure air was fed to the system. The electrically charged particles were attracted or repelled the central electrode according to their acquired loads. Design calculations led to the disposal of a collection hole in the system that allowed the classification of patículas by size ranges in the nanometer scale. After the experiments conducted in FEQUI / UFU, it was found that the amount of nanoparticles produced in the system was a function of concentration of NaCl used in solution as well as the average size of the particles produced. In addition, tests were performed in the Department of Chemical Engineering, Federal University of São Carlos (DEQ / UFSCar), using a commercial analyzer (SMPS) TSI brand. These tests helped the comparison of experimental results with theoretical, showing that this Electric Mobility Analyzer was quite efficient in the production of monodisperse nanoaerossóis, priced less than 10% of the value of commercial equipment. A mobility swing nanoparticle classification, based on the load distribution has been proposed to estimate size distributions produced, which is representative for balance and excessive monodisperse aerosol. |
publishDate |
2015 |
dc.date.available.fl_str_mv |
2015-04-23 2016-06-22T18:41:52Z |
dc.date.issued.fl_str_mv |
2015-02-20 |
dc.date.accessioned.fl_str_mv |
2016-06-22T18:41:52Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/masterThesis |
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masterThesis |
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publishedVersion |
dc.identifier.citation.fl_str_mv |
CAMARGO, Eduarda Cristina de Matos. Estudo do desempenho de um analisador de mobilidade elétrica de nanopartículas. 2015. 102 f. Dissertação (Mestrado em Engenharias) - Universidade Federal de Uberlândia, Uberlândia, 2015. Disponível em: https://doi.org/10.14393/ufu.di.2015.81 |
dc.identifier.uri.fl_str_mv |
https://repositorio.ufu.br/handle/123456789/15236 |
dc.identifier.doi.por.fl_str_mv |
https://doi.org/10.14393/ufu.di.2015.81 |
identifier_str_mv |
CAMARGO, Eduarda Cristina de Matos. Estudo do desempenho de um analisador de mobilidade elétrica de nanopartículas. 2015. 102 f. Dissertação (Mestrado em Engenharias) - Universidade Federal de Uberlândia, Uberlândia, 2015. Disponível em: https://doi.org/10.14393/ufu.di.2015.81 |
url |
https://repositorio.ufu.br/handle/123456789/15236 https://doi.org/10.14393/ufu.di.2015.81 |
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Universidade Federal de Uberlândia |
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Programa de Pós-graduação em Engenharia Química |
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UFU |
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BR |
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Engenharias |
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Universidade Federal de Uberlândia |
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