Adsorção de antibióticos em meio aquoso utilizando diferentes adsorventes
Autor(a) principal: | |
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Data de Publicação: | 2015 |
Tipo de documento: | Tese |
Idioma: | por |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://hdl.handle.net/11449/124531 http://www.athena.biblioteca.unesp.br/exlibris/bd/cathedra/18-06-2015/000837208.pdf |
Resumo: | The presence of pharmacological compounds in water supply sources are a risk as to the quality of water intended for human consumption. The introduction of these compounds into the environment through anthropogenic sources is a latent risk to aquatic and terrestrial organisms. Some studies report to reduced effectiveness in removing the drugs present in raw water during its treatment in a Water Treatment Plant. Given this aspect, the present study evaluated the removal capacity of antibiotics ampicillin, amoxicillin, cephalexin and ciprofloxacin, via adsorption process in batch and column using the following adsorbents: plastic bottles (after use), sugar cane bagasse (SCB), functionalized clay with N-dodecyl-2- pyrrolidone (Mo-DDP), silica and oligomer polyhedral of organo silsesquioxane modified with thiourea (SG- TU and POSS-TU, respectively), and silica modified by cyclodextrin (β- CDSi). The adsorbents were characterized by Boehm titration, FTIR, pH zero point of charge (pH ZPC ) and SEM. The drug concentrations were determined by high performance liquid chromatography. The adsorption parameters tested showed that 120‟ to 240‟ of contact are sufficient for adsorbent adsorption in the adsorbents which the solution initial pH interferes in the adsorption in different magnitudes, depending on the adsorbent-adsorbate system rated. The adsorption balance batched was expressed through isotherms adsorption according to Langmuir, Freundlich, Temkin and D-R. The Freundlich isotherm was the one that best represented the experimental data for all adsorbents, except for β-CDSi, which had the best adsorption equilibrium represented by the Langmuir model. The kinetics of drugs adsorption was discussed using the kinetic models of Pseudo-first and second order, Elovich, intraparticle diffusion and film diffusion. The Pseudo-second kinetic model can better describe the adsorption of antibiotics in the ... |
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Adsorção de antibióticos em meio aquoso utilizando diferentes adsorventesAgua - PurificaçãoAdsorçãoAntibioticosCiência dos materiaisMaterials scienceThe presence of pharmacological compounds in water supply sources are a risk as to the quality of water intended for human consumption. The introduction of these compounds into the environment through anthropogenic sources is a latent risk to aquatic and terrestrial organisms. Some studies report to reduced effectiveness in removing the drugs present in raw water during its treatment in a Water Treatment Plant. Given this aspect, the present study evaluated the removal capacity of antibiotics ampicillin, amoxicillin, cephalexin and ciprofloxacin, via adsorption process in batch and column using the following adsorbents: plastic bottles (after use), sugar cane bagasse (SCB), functionalized clay with N-dodecyl-2- pyrrolidone (Mo-DDP), silica and oligomer polyhedral of organo silsesquioxane modified with thiourea (SG- TU and POSS-TU, respectively), and silica modified by cyclodextrin (β- CDSi). The adsorbents were characterized by Boehm titration, FTIR, pH zero point of charge (pH ZPC ) and SEM. The drug concentrations were determined by high performance liquid chromatography. The adsorption parameters tested showed that 120‟ to 240‟ of contact are sufficient for adsorbent adsorption in the adsorbents which the solution initial pH interferes in the adsorption in different magnitudes, depending on the adsorbent-adsorbate system rated. The adsorption balance batched was expressed through isotherms adsorption according to Langmuir, Freundlich, Temkin and D-R. The Freundlich isotherm was the one that best represented the experimental data for all adsorbents, except for β-CDSi, which had the best adsorption equilibrium represented by the Langmuir model. The kinetics of drugs adsorption was discussed using the kinetic models of Pseudo-first and second order, Elovich, intraparticle diffusion and film diffusion. The Pseudo-second kinetic model can better describe the adsorption of antibiotics in the ...A presença de compostos farmacológicos nos mananciais de abastecimento representa um comprometimento à qualidade das águas destinadas ao consumo humano. A introdução destes compostos no meio ambiente através de fontes antropogênicas constitui um risco latente para os organismos aquáticos e terrestres. Alguns estudos reportam para a reduzida efetividade na remoção dos fármacos presentes na água bruta durante seu tratamento em uma Estação de Tratamento. Diante deste tema, o presente estudo avaliou a capacidade de remoção dos antibióticos ampicilina, amoxicilina, cefalexina e ciprofloxacina, via processo de adsorção em batelada e coluna, utilizando seguintes adsorventes: PET (pós uso), bagaço de cana-de- açúcar (BCA), argila funcionalizada com N-dodecil-2-pirrolidona (Mo-DDP), sílica e oligômero poliédrico de silsesquioxano organomodificado com tiouréia (SG-TU e POSS-TU, respectivamente) e ciclodextrina modificada com sílica (β-CDSi). Os adsorventes foram caracterizados por titulação de Boehm, FTIR, pH de ponto de carga zero (pH PCZ ) e MEV. As concentrações dos fármacos foram determinadas por cromatografia líquida de alta eficiência. Os parâmetros de adsorção testados mostraram que de 120 a 240 min. de contato são suficientes para a adsorção dos adsorvatos nos adsorventes e que o pH inicial da solução interfere na adsorção em magnitudes diferentes, dependendo do sistema adsorvente-adsorvato avaliado. O equilíbrio da adsorção em batelada foi expresso por meio de isotermas de adsorção de acordo com os modelos de Langmuir, Freundlich, Temkin e D-R. A isoterma Freundlich foi a que melhor representou os dados experimentais para todos os adsorventes, exceto para β-CDSi, que teve o equilíbrio de adsorção melhor representado pelo modelo de Langmuir. A cinética de adsorção dos fármacos foi discutida utilizando os modelos cinéticos de Pseudo- primeira e...Universidade Estadual Paulista (Unesp)Dias Filho, Newton Luiz [UNESP]Universidade Estadual Paulista (Unesp)Silva, Niléia Cristina da [UNESP]2015-07-13T12:10:31Z2015-07-13T12:10:31Z2015-02-20info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/doctoralThesis169 f. : il.application/pdfSILVA, Niléia Cristina da. Adsorção de antibióticos em meio aquoso utilizando diferentes adsorventes. 2015. 169 f. Tese (doutorado) - Universidade Estadual Paulista Júlio de Mesquita Filho, Faculdade de Engenharia, 2015.http://hdl.handle.net/11449/124531000837208http://www.athena.biblioteca.unesp.br/exlibris/bd/cathedra/18-06-2015/000837208.pdf33004099083P91509480515046572Alephreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPporinfo:eu-repo/semantics/openAccess2024-08-05T13:15:06Zoai:repositorio.unesp.br:11449/124531Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T13:15:06Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Adsorção de antibióticos em meio aquoso utilizando diferentes adsorventes |
title |
Adsorção de antibióticos em meio aquoso utilizando diferentes adsorventes |
spellingShingle |
Adsorção de antibióticos em meio aquoso utilizando diferentes adsorventes Silva, Niléia Cristina da [UNESP] Agua - Purificação Adsorção Antibioticos Ciência dos materiais Materials science |
title_short |
Adsorção de antibióticos em meio aquoso utilizando diferentes adsorventes |
title_full |
Adsorção de antibióticos em meio aquoso utilizando diferentes adsorventes |
title_fullStr |
Adsorção de antibióticos em meio aquoso utilizando diferentes adsorventes |
title_full_unstemmed |
Adsorção de antibióticos em meio aquoso utilizando diferentes adsorventes |
title_sort |
Adsorção de antibióticos em meio aquoso utilizando diferentes adsorventes |
author |
Silva, Niléia Cristina da [UNESP] |
author_facet |
Silva, Niléia Cristina da [UNESP] |
author_role |
author |
dc.contributor.none.fl_str_mv |
Dias Filho, Newton Luiz [UNESP] Universidade Estadual Paulista (Unesp) |
dc.contributor.author.fl_str_mv |
Silva, Niléia Cristina da [UNESP] |
dc.subject.por.fl_str_mv |
Agua - Purificação Adsorção Antibioticos Ciência dos materiais Materials science |
topic |
Agua - Purificação Adsorção Antibioticos Ciência dos materiais Materials science |
description |
The presence of pharmacological compounds in water supply sources are a risk as to the quality of water intended for human consumption. The introduction of these compounds into the environment through anthropogenic sources is a latent risk to aquatic and terrestrial organisms. Some studies report to reduced effectiveness in removing the drugs present in raw water during its treatment in a Water Treatment Plant. Given this aspect, the present study evaluated the removal capacity of antibiotics ampicillin, amoxicillin, cephalexin and ciprofloxacin, via adsorption process in batch and column using the following adsorbents: plastic bottles (after use), sugar cane bagasse (SCB), functionalized clay with N-dodecyl-2- pyrrolidone (Mo-DDP), silica and oligomer polyhedral of organo silsesquioxane modified with thiourea (SG- TU and POSS-TU, respectively), and silica modified by cyclodextrin (β- CDSi). The adsorbents were characterized by Boehm titration, FTIR, pH zero point of charge (pH ZPC ) and SEM. The drug concentrations were determined by high performance liquid chromatography. The adsorption parameters tested showed that 120‟ to 240‟ of contact are sufficient for adsorbent adsorption in the adsorbents which the solution initial pH interferes in the adsorption in different magnitudes, depending on the adsorbent-adsorbate system rated. The adsorption balance batched was expressed through isotherms adsorption according to Langmuir, Freundlich, Temkin and D-R. The Freundlich isotherm was the one that best represented the experimental data for all adsorbents, except for β-CDSi, which had the best adsorption equilibrium represented by the Langmuir model. The kinetics of drugs adsorption was discussed using the kinetic models of Pseudo-first and second order, Elovich, intraparticle diffusion and film diffusion. The Pseudo-second kinetic model can better describe the adsorption of antibiotics in the ... |
publishDate |
2015 |
dc.date.none.fl_str_mv |
2015-07-13T12:10:31Z 2015-07-13T12:10:31Z 2015-02-20 |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/doctoralThesis |
format |
doctoralThesis |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
SILVA, Niléia Cristina da. Adsorção de antibióticos em meio aquoso utilizando diferentes adsorventes. 2015. 169 f. Tese (doutorado) - Universidade Estadual Paulista Júlio de Mesquita Filho, Faculdade de Engenharia, 2015. http://hdl.handle.net/11449/124531 000837208 http://www.athena.biblioteca.unesp.br/exlibris/bd/cathedra/18-06-2015/000837208.pdf 33004099083P9 1509480515046572 |
identifier_str_mv |
SILVA, Niléia Cristina da. Adsorção de antibióticos em meio aquoso utilizando diferentes adsorventes. 2015. 169 f. Tese (doutorado) - Universidade Estadual Paulista Júlio de Mesquita Filho, Faculdade de Engenharia, 2015. 000837208 33004099083P9 1509480515046572 |
url |
http://hdl.handle.net/11449/124531 http://www.athena.biblioteca.unesp.br/exlibris/bd/cathedra/18-06-2015/000837208.pdf |
dc.language.iso.fl_str_mv |
por |
language |
por |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
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openAccess |
dc.format.none.fl_str_mv |
169 f. : il. application/pdf |
dc.publisher.none.fl_str_mv |
Universidade Estadual Paulista (Unesp) |
publisher.none.fl_str_mv |
Universidade Estadual Paulista (Unesp) |
dc.source.none.fl_str_mv |
Aleph reponame:Repositório Institucional da UNESP instname:Universidade Estadual Paulista (UNESP) instacron:UNESP |
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Universidade Estadual Paulista (UNESP) |
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UNESP |
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UNESP |
reponame_str |
Repositório Institucional da UNESP |
collection |
Repositório Institucional da UNESP |
repository.name.fl_str_mv |
Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP) |
repository.mail.fl_str_mv |
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1808128170646306816 |