Investigação do processo oxidativo avançado (UVC/ H2O2/Carvão ativado) na eliminação de Ftalatos
Autor(a) principal: | |
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Data de Publicação: | 2017 |
Tipo de documento: | Dissertação |
Idioma: | por |
Título da fonte: | Repositório Institucional da UFG |
dARK ID: | ark:/38995/0013000006xsf |
Texto Completo: | http://repositorio.bc.ufg.br/tede/handle/tede/8701 |
Resumo: | The objective of this work was to compare the efficiency of conventional treatments such as activated carbon (AC) Adsorption and the advanced oxidation process (AOP), UV-C/H2O2, for degradation of diethyl phthalete (DEP) and coupling UV-C/H2O2/AC in laboratory effluent, ultrapure water and faucet water doped with DEP and laboratory effluent with multicomponents (DEP and phenol). The chemical characterization (Boehm method, pHPZC, IRTF, elemental analysis) and physical (volume of micropores and mesopores, mean micropore width by the Dubini-Radushkevich method were used as a predecessor to the kinetic adsorption study, Surface area and microporous specific volume by the alpha method, microporous and total surface, BET surface area by BET method, cumulative mesopore distribution and pore volume, cumulative area and surface area and pore size by BJH method) of AC. The factorial design with eleven tests and three independent variables (AC mass, temperature and pH) was applied, resulting in response surfaces for adsorption capacity, DEP elimination rate and equilibrium time without significant difference between the studied variables. Mathematical modeling of adsorption kinetics using the pseudo-first, pseudo-second order and intraparticle models was performed and the pseudo-second order model was fitted to the experimental kinetic adsorption data. It was followed by the study of the adsorption isotherms for the lower, intermediate and longer equilibrium experimental conditions. It was performed the mathematical modeling of the adsorption isotherms using the Langmuir and Freundlinch models, and adjusted to the Freundlinch model to the experimental data of the adsorption isotherms with higher determination coefficients (R2), confirming the predominant chemorandomization adsorption phenomenon. The treatment of AOP UV-C/H2O2 was then applied alone. The factorial design with eleven tests and three independent variables (H2O2 concentration, temperature and pH) was applied, resulting in surfaces of responses to DEP elimination rate with significant difference between the variables studied for pH, positive effect of H2O2 concentration (p < 0.5). The mathematical modeling of the kinetics of AOP using the first order models was carried out, and the kinetic experimental data of the photodegradation with high coefficients of determination (R2> 0.9) were fitted to the model. The degradation kinetics of DEP by AOP coupling and AC, UV-C/H2O2/AC were followed. The factorial design with eleven tests and three independent variables (H2O2 concentration, temperature and pH) and with 0.4 g of AC, resulting in surfaces of responses to elimination rate of DEP with significant difference between the variables studied for pH, positive effect of H2O2 concentration (p <0.5). The mass of AC was determined in 0.4 g for all eleven tests, because it was the mass applied at the highest rates of elimination of DEP by kinetics of Adsorption, which was confirmed by repeatability at the central points of the factorial design (C9, C10 and C11). The catalytic activity of the carbons for the Adsorption process in the presence of tertbutanol was high, however, after the determination of the kinetic parameters, the contribution was higher for photooxidation of DEP by the action of the AOP (homogeneous system). |
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Oliveira, Tatianne Ferreira dehttp://lattes.cnpq.br/2017895913160804Sá, Fernando Pereira dehttp://lattes.cnpq.br/4037828435725730Oliveira, Tatianne Ferreira deGoulart, Gilberto Alessandre SoaresPereira, JuliãoCastiglioni, Gabriel LuisSilva, Flávio Alveshttp://lattes.cnpq.br/2816597889151178Almeida, Maria Carolina de2018-07-17T13:38:02Z2017-05-05ALMEIDA, Maria Carolina de. Investigação do processo oxidativo avançado (UVC/ H2O2/Carvão ativado) na eliminação de Ftalatos. 2017. 187 f. Dissertação (Mestrado em Ciência e Tecnologia de Alimentos) - Universidade Federal de Goiás, Goiânia, 2017.http://repositorio.bc.ufg.br/tede/handle/tede/8701ark:/38995/0013000006xsfThe objective of this work was to compare the efficiency of conventional treatments such as activated carbon (AC) Adsorption and the advanced oxidation process (AOP), UV-C/H2O2, for degradation of diethyl phthalete (DEP) and coupling UV-C/H2O2/AC in laboratory effluent, ultrapure water and faucet water doped with DEP and laboratory effluent with multicomponents (DEP and phenol). The chemical characterization (Boehm method, pHPZC, IRTF, elemental analysis) and physical (volume of micropores and mesopores, mean micropore width by the Dubini-Radushkevich method were used as a predecessor to the kinetic adsorption study, Surface area and microporous specific volume by the alpha method, microporous and total surface, BET surface area by BET method, cumulative mesopore distribution and pore volume, cumulative area and surface area and pore size by BJH method) of AC. The factorial design with eleven tests and three independent variables (AC mass, temperature and pH) was applied, resulting in response surfaces for adsorption capacity, DEP elimination rate and equilibrium time without significant difference between the studied variables. Mathematical modeling of adsorption kinetics using the pseudo-first, pseudo-second order and intraparticle models was performed and the pseudo-second order model was fitted to the experimental kinetic adsorption data. It was followed by the study of the adsorption isotherms for the lower, intermediate and longer equilibrium experimental conditions. It was performed the mathematical modeling of the adsorption isotherms using the Langmuir and Freundlinch models, and adjusted to the Freundlinch model to the experimental data of the adsorption isotherms with higher determination coefficients (R2), confirming the predominant chemorandomization adsorption phenomenon. The treatment of AOP UV-C/H2O2 was then applied alone. The factorial design with eleven tests and three independent variables (H2O2 concentration, temperature and pH) was applied, resulting in surfaces of responses to DEP elimination rate with significant difference between the variables studied for pH, positive effect of H2O2 concentration (p < 0.5). The mathematical modeling of the kinetics of AOP using the first order models was carried out, and the kinetic experimental data of the photodegradation with high coefficients of determination (R2> 0.9) were fitted to the model. The degradation kinetics of DEP by AOP coupling and AC, UV-C/H2O2/AC were followed. The factorial design with eleven tests and three independent variables (H2O2 concentration, temperature and pH) and with 0.4 g of AC, resulting in surfaces of responses to elimination rate of DEP with significant difference between the variables studied for pH, positive effect of H2O2 concentration (p <0.5). The mass of AC was determined in 0.4 g for all eleven tests, because it was the mass applied at the highest rates of elimination of DEP by kinetics of Adsorption, which was confirmed by repeatability at the central points of the factorial design (C9, C10 and C11). The catalytic activity of the carbons for the Adsorption process in the presence of tertbutanol was high, however, after the determination of the kinetic parameters, the contribution was higher for photooxidation of DEP by the action of the AOP (homogeneous system).O objetivo desse trabalho foi comparar a eficiência de tratamentos convencionais como a adsorção com carvão ativado (CA) e o processo oxidativo avançado (POA), UV-C/H2O2, para degradação de dietil ftlato (DEP) e a acoplagem UV-C/H2O2/CA em efluente de laboratório, água ultrapura e água de torneira dopados com DEP e efluente de laboratório com multicomponentes (DEP e fenol). De modo predecessor ao estudo cinético da adsorção, aplicado isoladamente, realizou-se a caracterização química (método de Boehm, pHPZC, IRTF, análise elementar) e física (volume de microporos e mesoporos, largura média de microporos pelo método de Dubini-Radushkevich, superfície exterior e volume específico microporoso pelo método alfa, superfície microporosa e total, área de superfície de BET pelo método de BET, distribuição dos mesoporos cumulativo e volume do poro, área cumulativa e área superficial e tamanho do poro pelo método BJH) do CA. O delineamento fatorial com onze ensaios e três variáveis independentes (massa de CA, temperatura e pH) foi aplicado, resultando em superfícies de respostas para capacidade de adsorção, taxa de eliminação de DEP e tempo de equilibrio sem diferença significativa entre as variáveis estudadas. Foi realizada a modelagem matemática das cinéticas de adsorção utilizando os modelos de pseudo-primeira, pseudosegunda ordem e intrapartícula, e ajustou-se ao modelo de pseudo-segunda ordem aos dados experimentais cinéticos de adsorção. Seguiu-se com o estudo das isotermas de adsorção paras as condições experimentais de menor, intermediário e de maior tempo de equilíbrio. Foi realizada a modelagem matemática das isotermas de adsorção utilizando os modelos de Langmuir e Freundlinch, e ajustou-se ao modelo de Freundlinch aos dados experimentais das isotermas de adsorção com maior coeficientes de determinação (R2), confirmando o fenômeno de adsorção predominante quimiosorção. Seguiu-se a aplicação do tratamento de POA UVC/ H2O2, isoladamente. O delineamento fatorial com onze ensaios e três variáveis independentes (concentração de H2O2, temperatura e pH) foi aplicado, resultando em superfícies de respostas para taxa de eliminação de DEP com diferença significativa entre as variáveis estudadas para o pH, e efeito positivo da concentração de H2O2 (p<0,5). Foi realizada a modelagem matemática das cinéticas de POA utilizando os modelos de primeira ordem, e ajustaram-se ao modelo os dados experimentais cinéticos da fotodegradação com elevados coeficientes de determinação (R2>0,9). Seguiu-se para o estudo das cinética de degradação de DEP pela acoplagem POA e CA, UV-C/H2O2/CA. O delineamento fatorial com onze ensaios e três variáveis independentes (concentração de H2O2, temperatura e pH) e com 0,4 g de CA, resultando em superfícies de respostas para taxa de eliminação de DEP com diferença significativa entre as variáveis estudadas para o pH, efeito positivo da concentração de H2O2 (p<0,5). A massa de CA foi determinada em 0,4 g para todos os onze ensaios, porque foi a massa aplicada nas maiores taxas de eliminação de DEP pelas cinéticas de adsorção, que se confirmou, pela repetitibilidade, nos pontos centrais do delineamento fatorial (C9, C10 e C11). A atividade catalítica dos carvões para o processo de adsorção em presença de tércio butanol foi elevada, contudo a contribuição, após a determinação das constantes cinéticas, revelou-se maior para foto-oxidaçao de DEP pela ação do POA (sistema homogêneo).Submitted by Marlene Santos (marlene.bc.ufg@gmail.com) on 2018-07-13T19:29:17Z No. of bitstreams: 2 Dissertação - Maria Carolina de Almeida - 2017.pdf: 6786764 bytes, checksum: 4574a29178a9cb373e63d3280e95024e (MD5) license_rdf: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5)Approved for entry into archive by Luciana Ferreira (lucgeral@gmail.com) on 2018-07-17T13:38:02Z (GMT) No. of bitstreams: 2 Dissertação - Maria Carolina de Almeida - 2017.pdf: 6786764 bytes, checksum: 4574a29178a9cb373e63d3280e95024e (MD5) license_rdf: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5)Made available in DSpace on 2018-07-17T13:38:02Z (GMT). No. of bitstreams: 2 Dissertação - Maria Carolina de Almeida - 2017.pdf: 6786764 bytes, checksum: 4574a29178a9cb373e63d3280e95024e (MD5) license_rdf: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5) Previous issue date: 2017-05-05Fundação de Amparo à Pesquisa do Estado de Goiás - FAPEGapplication/pdfporUniversidade Federal de GoiásPrograma de Pós-graduação em Ciência e Tecnologia de Alimentos (EA)UFGBrasilEscola de Agronomia - EA (RG)http://creativecommons.org/licenses/by-nc-nd/4.0/info:eu-repo/semantics/openAccessEfluenteDietil ftalatoTratamentosProcesso oxidativo avançado (UV-C/H2O2)Adsorção em carvão ativado (CA)Acoplagem (UV-C/H2O2/CA)EffluentDiethyl phthalateTreatmentsAdvanced oxidative process (UV-C/H2O2)Activated carbon adsorption (AC)Coupling (UV-C/H2O2/AC)TECNOLOGIA DE ALIMENTOS::TECNOLOGIA DE ALIMENTOS DIETETICOS E NUTRICIONAISInvestigação do processo oxidativo avançado (UVC/ H2O2/Carvão ativado) na eliminação de FtalatosInvestigation of the advanced oxidative process (UVC/ H2O2/Activated carbon) in the elimination of phathalatesinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/masterThesis-576310214526401896600600600600-60469537235023740703659391347619746047-961409807440757778reponame:Repositório Institucional da UFGinstname:Universidade Federal de Goiás (UFG)instacron:UFGLICENSElicense.txtlicense.txttext/plain; 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dc.title.eng.fl_str_mv |
Investigação do processo oxidativo avançado (UVC/ H2O2/Carvão ativado) na eliminação de Ftalatos |
dc.title.alternative.eng.fl_str_mv |
Investigation of the advanced oxidative process (UVC/ H2O2/Activated carbon) in the elimination of phathalates |
title |
Investigação do processo oxidativo avançado (UVC/ H2O2/Carvão ativado) na eliminação de Ftalatos |
spellingShingle |
Investigação do processo oxidativo avançado (UVC/ H2O2/Carvão ativado) na eliminação de Ftalatos Almeida, Maria Carolina de Efluente Dietil ftalato Tratamentos Processo oxidativo avançado (UV-C/H2O2) Adsorção em carvão ativado (CA) Acoplagem (UV-C/H2O2/CA) Effluent Diethyl phthalate Treatments Advanced oxidative process (UV-C/H2O2) Activated carbon adsorption (AC) Coupling (UV-C/H2O2/AC) TECNOLOGIA DE ALIMENTOS::TECNOLOGIA DE ALIMENTOS DIETETICOS E NUTRICIONAIS |
title_short |
Investigação do processo oxidativo avançado (UVC/ H2O2/Carvão ativado) na eliminação de Ftalatos |
title_full |
Investigação do processo oxidativo avançado (UVC/ H2O2/Carvão ativado) na eliminação de Ftalatos |
title_fullStr |
Investigação do processo oxidativo avançado (UVC/ H2O2/Carvão ativado) na eliminação de Ftalatos |
title_full_unstemmed |
Investigação do processo oxidativo avançado (UVC/ H2O2/Carvão ativado) na eliminação de Ftalatos |
title_sort |
Investigação do processo oxidativo avançado (UVC/ H2O2/Carvão ativado) na eliminação de Ftalatos |
author |
Almeida, Maria Carolina de |
author_facet |
Almeida, Maria Carolina de |
author_role |
author |
dc.contributor.advisor1.fl_str_mv |
Oliveira, Tatianne Ferreira de |
dc.contributor.advisor1Lattes.fl_str_mv |
http://lattes.cnpq.br/2017895913160804 |
dc.contributor.advisor-co1.fl_str_mv |
Sá, Fernando Pereira de |
dc.contributor.advisor-co1Lattes.fl_str_mv |
http://lattes.cnpq.br/4037828435725730 |
dc.contributor.referee1.fl_str_mv |
Oliveira, Tatianne Ferreira de |
dc.contributor.referee2.fl_str_mv |
Goulart, Gilberto Alessandre Soares |
dc.contributor.referee3.fl_str_mv |
Pereira, Julião |
dc.contributor.referee4.fl_str_mv |
Castiglioni, Gabriel Luis |
dc.contributor.referee5.fl_str_mv |
Silva, Flávio Alves |
dc.contributor.authorLattes.fl_str_mv |
http://lattes.cnpq.br/2816597889151178 |
dc.contributor.author.fl_str_mv |
Almeida, Maria Carolina de |
contributor_str_mv |
Oliveira, Tatianne Ferreira de Sá, Fernando Pereira de Oliveira, Tatianne Ferreira de Goulart, Gilberto Alessandre Soares Pereira, Julião Castiglioni, Gabriel Luis Silva, Flávio Alves |
dc.subject.por.fl_str_mv |
Efluente Dietil ftalato Tratamentos Processo oxidativo avançado (UV-C/H2O2) Adsorção em carvão ativado (CA) Acoplagem (UV-C/H2O2/CA) |
topic |
Efluente Dietil ftalato Tratamentos Processo oxidativo avançado (UV-C/H2O2) Adsorção em carvão ativado (CA) Acoplagem (UV-C/H2O2/CA) Effluent Diethyl phthalate Treatments Advanced oxidative process (UV-C/H2O2) Activated carbon adsorption (AC) Coupling (UV-C/H2O2/AC) TECNOLOGIA DE ALIMENTOS::TECNOLOGIA DE ALIMENTOS DIETETICOS E NUTRICIONAIS |
dc.subject.eng.fl_str_mv |
Effluent Diethyl phthalate Treatments Advanced oxidative process (UV-C/H2O2) Activated carbon adsorption (AC) Coupling (UV-C/H2O2/AC) |
dc.subject.cnpq.fl_str_mv |
TECNOLOGIA DE ALIMENTOS::TECNOLOGIA DE ALIMENTOS DIETETICOS E NUTRICIONAIS |
description |
The objective of this work was to compare the efficiency of conventional treatments such as activated carbon (AC) Adsorption and the advanced oxidation process (AOP), UV-C/H2O2, for degradation of diethyl phthalete (DEP) and coupling UV-C/H2O2/AC in laboratory effluent, ultrapure water and faucet water doped with DEP and laboratory effluent with multicomponents (DEP and phenol). The chemical characterization (Boehm method, pHPZC, IRTF, elemental analysis) and physical (volume of micropores and mesopores, mean micropore width by the Dubini-Radushkevich method were used as a predecessor to the kinetic adsorption study, Surface area and microporous specific volume by the alpha method, microporous and total surface, BET surface area by BET method, cumulative mesopore distribution and pore volume, cumulative area and surface area and pore size by BJH method) of AC. The factorial design with eleven tests and three independent variables (AC mass, temperature and pH) was applied, resulting in response surfaces for adsorption capacity, DEP elimination rate and equilibrium time without significant difference between the studied variables. Mathematical modeling of adsorption kinetics using the pseudo-first, pseudo-second order and intraparticle models was performed and the pseudo-second order model was fitted to the experimental kinetic adsorption data. It was followed by the study of the adsorption isotherms for the lower, intermediate and longer equilibrium experimental conditions. It was performed the mathematical modeling of the adsorption isotherms using the Langmuir and Freundlinch models, and adjusted to the Freundlinch model to the experimental data of the adsorption isotherms with higher determination coefficients (R2), confirming the predominant chemorandomization adsorption phenomenon. The treatment of AOP UV-C/H2O2 was then applied alone. The factorial design with eleven tests and three independent variables (H2O2 concentration, temperature and pH) was applied, resulting in surfaces of responses to DEP elimination rate with significant difference between the variables studied for pH, positive effect of H2O2 concentration (p < 0.5). The mathematical modeling of the kinetics of AOP using the first order models was carried out, and the kinetic experimental data of the photodegradation with high coefficients of determination (R2> 0.9) were fitted to the model. The degradation kinetics of DEP by AOP coupling and AC, UV-C/H2O2/AC were followed. The factorial design with eleven tests and three independent variables (H2O2 concentration, temperature and pH) and with 0.4 g of AC, resulting in surfaces of responses to elimination rate of DEP with significant difference between the variables studied for pH, positive effect of H2O2 concentration (p <0.5). The mass of AC was determined in 0.4 g for all eleven tests, because it was the mass applied at the highest rates of elimination of DEP by kinetics of Adsorption, which was confirmed by repeatability at the central points of the factorial design (C9, C10 and C11). The catalytic activity of the carbons for the Adsorption process in the presence of tertbutanol was high, however, after the determination of the kinetic parameters, the contribution was higher for photooxidation of DEP by the action of the AOP (homogeneous system). |
publishDate |
2017 |
dc.date.issued.fl_str_mv |
2017-05-05 |
dc.date.accessioned.fl_str_mv |
2018-07-17T13:38:02Z |
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 |
ALMEIDA, Maria Carolina de. Investigação do processo oxidativo avançado (UVC/ H2O2/Carvão ativado) na eliminação de Ftalatos. 2017. 187 f. Dissertação (Mestrado em Ciência e Tecnologia de Alimentos) - Universidade Federal de Goiás, Goiânia, 2017. |
dc.identifier.uri.fl_str_mv |
http://repositorio.bc.ufg.br/tede/handle/tede/8701 |
dc.identifier.dark.fl_str_mv |
ark:/38995/0013000006xsf |
identifier_str_mv |
ALMEIDA, Maria Carolina de. Investigação do processo oxidativo avançado (UVC/ H2O2/Carvão ativado) na eliminação de Ftalatos. 2017. 187 f. Dissertação (Mestrado em Ciência e Tecnologia de Alimentos) - Universidade Federal de Goiás, Goiânia, 2017. ark:/38995/0013000006xsf |
url |
http://repositorio.bc.ufg.br/tede/handle/tede/8701 |
dc.language.iso.fl_str_mv |
por |
language |
por |
dc.relation.program.fl_str_mv |
-576310214526401896 |
dc.relation.confidence.fl_str_mv |
600 600 600 600 |
dc.relation.department.fl_str_mv |
-6046953723502374070 |
dc.relation.cnpq.fl_str_mv |
3659391347619746047 |
dc.relation.sponsorship.fl_str_mv |
-961409807440757778 |
dc.rights.driver.fl_str_mv |
http://creativecommons.org/licenses/by-nc-nd/4.0/ info:eu-repo/semantics/openAccess |
rights_invalid_str_mv |
http://creativecommons.org/licenses/by-nc-nd/4.0/ |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
application/pdf |
dc.publisher.none.fl_str_mv |
Universidade Federal de Goiás |
dc.publisher.program.fl_str_mv |
Programa de Pós-graduação em Ciência e Tecnologia de Alimentos (EA) |
dc.publisher.initials.fl_str_mv |
UFG |
dc.publisher.country.fl_str_mv |
Brasil |
dc.publisher.department.fl_str_mv |
Escola de Agronomia - EA (RG) |
publisher.none.fl_str_mv |
Universidade Federal de Goiás |
dc.source.none.fl_str_mv |
reponame:Repositório Institucional da UFG instname:Universidade Federal de Goiás (UFG) instacron:UFG |
instname_str |
Universidade Federal de Goiás (UFG) |
instacron_str |
UFG |
institution |
UFG |
reponame_str |
Repositório Institucional da UFG |
collection |
Repositório Institucional da UFG |
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tasesdissertacoes.bc@ufg.br |
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