Emprego de quitina e quitosana para adsorÃÃo de fenol de efluente de refinaria de petrÃleo

Detalhes bibliográficos
Autor(a) principal: Maria Aparecida Liberato Milhome
Data de Publicação: 2006
Tipo de documento: Dissertação
Idioma: por
Título da fonte: Biblioteca Digital de Teses e Dissertações da UFC
Texto Completo: http://www.teses.ufc.br/tde_busca/arquivo.php?codArquivo=168
Resumo: In this research was evaluated the efficiency of the adsorbents chitin and chitosan on the phenol adsorption using the wastewater produced by LUBNOR - Lubricants and Petroleum Derivative of Northeast Brazil, an oil refinery of Petrobras, located in Fortaleza, CearÃ. The study was divided in two stages: study in batch and column of fixed bed. In the first stage were initially investigated the effect of the mass of adsorbent and the effect pH from phenolic solution. The optims parameters (mass 0,2 g and pH 6) were adopted for the subsequent studies of batch. The adsorption kinetic showed that the equilibrium of adsorption happened in 5 hours for chitin and 6 hours for chitosan. The application of the experimental data to the models of pseudo-first order, pseudo-second order and intraparticles diffusion, suggest that chitosan and chitin follow adsorption kinetic of first and second order respectively. The maximum adsorption capacities obtained, using the Langmuir model, were 1,96 mg/g for chitin and 1,26 mg/g for chitosan. In the second stage of the research, were studied the variation of hydraulic detention time (HDT), height of the bed and pH of the phenolic solution, to verify the optims conditions of column operation. The maximum phenol removal obtained were 70-80% for both adsorbents. In this study the regeneration of the adsorbents were tested with eluents acetone, acetone 50% v/v, ethanol and ethanol 50% v/v. Of these, ethanol 50% v/v, was more efficiency in the phenol recovery, as well as in the regeneration of the adsorbent. The evaluation of the parameters physical-chemical pH, conductivity, turbidity, oil and greases, COD and dissolved solids, suggest an improvement of quality from wastewater of refinery after the treatment with the adsorventes chitin and chitosan.
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spelling info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/masterThesisEmprego de quitina e quitosana para adsorÃÃo de fenol de efluente de refinaria de petrÃleo Employment of chitin and chitosan for adsorption of phenol of petroleum refinery wastewater2006-05-25Ronaldo Ferreira do Nascimento42824397349 http://lattes.cnpq.br/634544066627356178593506372http://buscatextual.cnpq.br/buscatextual/visualizacv.jsp?id=K4764107A2Maria Aparecida Liberato MilhomeUniversidade Federal do CearÃPrograma de PÃs-GraduaÃÃo em Engenharia CivilUFCBRSANEAMENTO AMBIENTALIn this research was evaluated the efficiency of the adsorbents chitin and chitosan on the phenol adsorption using the wastewater produced by LUBNOR - Lubricants and Petroleum Derivative of Northeast Brazil, an oil refinery of Petrobras, located in Fortaleza, CearÃ. The study was divided in two stages: study in batch and column of fixed bed. In the first stage were initially investigated the effect of the mass of adsorbent and the effect pH from phenolic solution. The optims parameters (mass 0,2 g and pH 6) were adopted for the subsequent studies of batch. The adsorption kinetic showed that the equilibrium of adsorption happened in 5 hours for chitin and 6 hours for chitosan. The application of the experimental data to the models of pseudo-first order, pseudo-second order and intraparticles diffusion, suggest that chitosan and chitin follow adsorption kinetic of first and second order respectively. The maximum adsorption capacities obtained, using the Langmuir model, were 1,96 mg/g for chitin and 1,26 mg/g for chitosan. In the second stage of the research, were studied the variation of hydraulic detention time (HDT), height of the bed and pH of the phenolic solution, to verify the optims conditions of column operation. The maximum phenol removal obtained were 70-80% for both adsorbents. In this study the regeneration of the adsorbents were tested with eluents acetone, acetone 50% v/v, ethanol and ethanol 50% v/v. Of these, ethanol 50% v/v, was more efficiency in the phenol recovery, as well as in the regeneration of the adsorbent. The evaluation of the parameters physical-chemical pH, conductivity, turbidity, oil and greases, COD and dissolved solids, suggest an improvement of quality from wastewater of refinery after the treatment with the adsorventes chitin and chitosan.Nesta pesquisa foi avaliada a eficiÃncia dos adsorventes quitina e quitosana na adsorÃÃo de fenol utilizando a Ãgua residuÃria produzida pela LUBNOR - Lubrificantes e Derivados de PetrÃleo do Nordeste, refinaria da Petrobras, localizada em Fortaleza. O estudo foi dividido em duas etapas: estudo em batelada e em coluna de leito fixo. Na primeira etapa foram avaliados a variaÃÃo da massa do adsorvente e o efeito da mudanÃa do pH do meio. As melhores condiÃÃes (massa 0,2 g e pH 6) foram entÃo adotadas nos estudos posteriores de batelada. Estudos cinÃticos mostraram que a adsorÃÃo mÃxima ocorreu em torno de 5 horas para quitina e 6 horas para quitosana. A aplicaÃÃo dos dados experimentais de cinÃtica aos modelos de pseudo-primeira ordem, pseudo-segunda ordem e difusÃo intrapartÃcula, sugerem que quitosana e quitina seguem reaÃÃo de primeira e segunda ordem, respectivamente. As capacidades mÃximas de adsorÃÃo obtidas nos estudos de equilÃbrio, envolvendo isotermas de Langmuir, foram 1,96 mg/g para quitina e 1,26 mg/g para quitosana. Na segunda etapa da pesquisa, foram estudados os parÃmetros tempo de detenÃÃo hidrÃulica (TDH), altura do leito fixo e pH da soluÃÃo fenÃlica, para verificar as melhores condiÃÃes operacionais da coluna. As mÃximas percentagens de remoÃÃo de fenol obtidas em coluna foram em torno de 70-80% para ambos os adsorventes. No estudo da regeneraÃÃo dos adsorventes foram testados os eluentes acetona, acetona 50% v/v, etanol e etanol 50% v/v. Dentre estes, o etanol 50% v/v mostrou maior eficiÃncia para recuperaÃÃo do fenol adsorvido, bem como para regeneraÃÃo do adsorvente. A avaliaÃÃo dos parÃmetros fÃsico-quÃmicos pH, condutividade, turbidez, TOG, DQO e sÃlidos dissolvidos, sugerem uma melhoria da qualidade do efluente petrolÃfero apÃs o tratamento com os adsorventes quitina e quitosana. CoordenaÃÃo de AperfeiÃoamento de Pessoal de NÃvel Superiorhttp://www.teses.ufc.br/tde_busca/arquivo.php?codArquivo=168application/pdfinfo:eu-repo/semantics/openAccessporreponame:Biblioteca Digital de Teses e Dissertações da UFCinstname:Universidade Federal do Cearáinstacron:UFC2019-01-21T11:13:14Zmail@mail.com -
dc.title.pt.fl_str_mv Emprego de quitina e quitosana para adsorÃÃo de fenol de efluente de refinaria de petrÃleo
dc.title.alternative.en.fl_str_mv Employment of chitin and chitosan for adsorption of phenol of petroleum refinery wastewater
title Emprego de quitina e quitosana para adsorÃÃo de fenol de efluente de refinaria de petrÃleo
spellingShingle Emprego de quitina e quitosana para adsorÃÃo de fenol de efluente de refinaria de petrÃleo
Maria Aparecida Liberato Milhome
SANEAMENTO AMBIENTAL
title_short Emprego de quitina e quitosana para adsorÃÃo de fenol de efluente de refinaria de petrÃleo
title_full Emprego de quitina e quitosana para adsorÃÃo de fenol de efluente de refinaria de petrÃleo
title_fullStr Emprego de quitina e quitosana para adsorÃÃo de fenol de efluente de refinaria de petrÃleo
title_full_unstemmed Emprego de quitina e quitosana para adsorÃÃo de fenol de efluente de refinaria de petrÃleo
title_sort Emprego de quitina e quitosana para adsorÃÃo de fenol de efluente de refinaria de petrÃleo
author Maria Aparecida Liberato Milhome
author_facet Maria Aparecida Liberato Milhome
author_role author
dc.contributor.advisor1.fl_str_mv Ronaldo Ferreira do Nascimento
dc.contributor.advisor1ID.fl_str_mv 42824397349
dc.contributor.advisor1Lattes.fl_str_mv http://lattes.cnpq.br/6345440666273561
dc.contributor.authorID.fl_str_mv 78593506372
dc.contributor.authorLattes.fl_str_mv http://buscatextual.cnpq.br/buscatextual/visualizacv.jsp?id=K4764107A2
dc.contributor.author.fl_str_mv Maria Aparecida Liberato Milhome
contributor_str_mv Ronaldo Ferreira do Nascimento
dc.subject.cnpq.fl_str_mv SANEAMENTO AMBIENTAL
topic SANEAMENTO AMBIENTAL
dc.description.sponsorship.fl_txt_mv CoordenaÃÃo de AperfeiÃoamento de Pessoal de NÃvel Superior
dc.description.abstract.por.fl_txt_mv In this research was evaluated the efficiency of the adsorbents chitin and chitosan on the phenol adsorption using the wastewater produced by LUBNOR - Lubricants and Petroleum Derivative of Northeast Brazil, an oil refinery of Petrobras, located in Fortaleza, CearÃ. The study was divided in two stages: study in batch and column of fixed bed. In the first stage were initially investigated the effect of the mass of adsorbent and the effect pH from phenolic solution. The optims parameters (mass 0,2 g and pH 6) were adopted for the subsequent studies of batch. The adsorption kinetic showed that the equilibrium of adsorption happened in 5 hours for chitin and 6 hours for chitosan. The application of the experimental data to the models of pseudo-first order, pseudo-second order and intraparticles diffusion, suggest that chitosan and chitin follow adsorption kinetic of first and second order respectively. The maximum adsorption capacities obtained, using the Langmuir model, were 1,96 mg/g for chitin and 1,26 mg/g for chitosan. In the second stage of the research, were studied the variation of hydraulic detention time (HDT), height of the bed and pH of the phenolic solution, to verify the optims conditions of column operation. The maximum phenol removal obtained were 70-80% for both adsorbents. In this study the regeneration of the adsorbents were tested with eluents acetone, acetone 50% v/v, ethanol and ethanol 50% v/v. Of these, ethanol 50% v/v, was more efficiency in the phenol recovery, as well as in the regeneration of the adsorbent. The evaluation of the parameters physical-chemical pH, conductivity, turbidity, oil and greases, COD and dissolved solids, suggest an improvement of quality from wastewater of refinery after the treatment with the adsorventes chitin and chitosan.
Nesta pesquisa foi avaliada a eficiÃncia dos adsorventes quitina e quitosana na adsorÃÃo de fenol utilizando a Ãgua residuÃria produzida pela LUBNOR - Lubrificantes e Derivados de PetrÃleo do Nordeste, refinaria da Petrobras, localizada em Fortaleza. O estudo foi dividido em duas etapas: estudo em batelada e em coluna de leito fixo. Na primeira etapa foram avaliados a variaÃÃo da massa do adsorvente e o efeito da mudanÃa do pH do meio. As melhores condiÃÃes (massa 0,2 g e pH 6) foram entÃo adotadas nos estudos posteriores de batelada. Estudos cinÃticos mostraram que a adsorÃÃo mÃxima ocorreu em torno de 5 horas para quitina e 6 horas para quitosana. A aplicaÃÃo dos dados experimentais de cinÃtica aos modelos de pseudo-primeira ordem, pseudo-segunda ordem e difusÃo intrapartÃcula, sugerem que quitosana e quitina seguem reaÃÃo de primeira e segunda ordem, respectivamente. As capacidades mÃximas de adsorÃÃo obtidas nos estudos de equilÃbrio, envolvendo isotermas de Langmuir, foram 1,96 mg/g para quitina e 1,26 mg/g para quitosana. Na segunda etapa da pesquisa, foram estudados os parÃmetros tempo de detenÃÃo hidrÃulica (TDH), altura do leito fixo e pH da soluÃÃo fenÃlica, para verificar as melhores condiÃÃes operacionais da coluna. As mÃximas percentagens de remoÃÃo de fenol obtidas em coluna foram em torno de 70-80% para ambos os adsorventes. No estudo da regeneraÃÃo dos adsorventes foram testados os eluentes acetona, acetona 50% v/v, etanol e etanol 50% v/v. Dentre estes, o etanol 50% v/v mostrou maior eficiÃncia para recuperaÃÃo do fenol adsorvido, bem como para regeneraÃÃo do adsorvente. A avaliaÃÃo dos parÃmetros fÃsico-quÃmicos pH, condutividade, turbidez, TOG, DQO e sÃlidos dissolvidos, sugerem uma melhoria da qualidade do efluente petrolÃfero apÃs o tratamento com os adsorventes quitina e quitosana.
description In this research was evaluated the efficiency of the adsorbents chitin and chitosan on the phenol adsorption using the wastewater produced by LUBNOR - Lubricants and Petroleum Derivative of Northeast Brazil, an oil refinery of Petrobras, located in Fortaleza, CearÃ. The study was divided in two stages: study in batch and column of fixed bed. In the first stage were initially investigated the effect of the mass of adsorbent and the effect pH from phenolic solution. The optims parameters (mass 0,2 g and pH 6) were adopted for the subsequent studies of batch. The adsorption kinetic showed that the equilibrium of adsorption happened in 5 hours for chitin and 6 hours for chitosan. The application of the experimental data to the models of pseudo-first order, pseudo-second order and intraparticles diffusion, suggest that chitosan and chitin follow adsorption kinetic of first and second order respectively. The maximum adsorption capacities obtained, using the Langmuir model, were 1,96 mg/g for chitin and 1,26 mg/g for chitosan. In the second stage of the research, were studied the variation of hydraulic detention time (HDT), height of the bed and pH of the phenolic solution, to verify the optims conditions of column operation. The maximum phenol removal obtained were 70-80% for both adsorbents. In this study the regeneration of the adsorbents were tested with eluents acetone, acetone 50% v/v, ethanol and ethanol 50% v/v. Of these, ethanol 50% v/v, was more efficiency in the phenol recovery, as well as in the regeneration of the adsorbent. The evaluation of the parameters physical-chemical pH, conductivity, turbidity, oil and greases, COD and dissolved solids, suggest an improvement of quality from wastewater of refinery after the treatment with the adsorventes chitin and chitosan.
publishDate 2006
dc.date.issued.fl_str_mv 2006-05-25
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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url http://www.teses.ufc.br/tde_busca/arquivo.php?codArquivo=168
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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 CearÃ
dc.publisher.program.fl_str_mv Programa de PÃs-GraduaÃÃo em Engenharia Civil
dc.publisher.initials.fl_str_mv UFC
dc.publisher.country.fl_str_mv BR
publisher.none.fl_str_mv Universidade Federal do CearÃ
dc.source.none.fl_str_mv reponame:Biblioteca Digital de Teses e Dissertações da UFC
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reponame_str Biblioteca Digital de Teses e Dissertações da UFC
collection Biblioteca Digital de Teses e Dissertações da UFC
instname_str Universidade Federal do Ceará
instacron_str UFC
institution UFC
repository.name.fl_str_mv -
repository.mail.fl_str_mv mail@mail.com
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