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Previous issue date: 2009-12-01 / Coordena??o de Aperfei?oamento de Pessoal de N?vel Superior / The oil and petrochemical industry is responsable to generate a large amount of waste
and wastewater. Among some efluents, is possible find the benzene, toluene, ethilbenze and
isomers of xilenes compounds, known as BTEX. These compounds are very volatily, toxic for
environment and potencially cancerigenous in man. Oxidative advanced processes, OAP, are
unconventional waste treatment, wich may be apply on treatment and remotion this
compounds. Fenton is a type of OAPs, wich uses the Fenton s reactant, hydrogen peroxide
and ferrous salt, to promove the organic degradation. While the Photo-Fenton type uses the
Fenton s reactant plus UV radiation (ultraviolet). These two types of OAP, according to
literature, may be apply on BTEX complex system. This project consists on the consideration
of the utilization of technologies Fenton and Photo-Fenton in aqueous solution in
concentration of 100 ppm of BTEX, each, on simulation of condition near of petrochemical
effluents. Different reactors were used for each type of OAP. For the analyticals results of
amount of remotion were used the SPME technique (solid phase microextraction) for
extraction in gaseous phase of these analytes and the gas chromatography/mass espectrometry
The arrangement mechanical of Photo-Fenton system has been shown big loss by
volatilization of these compounds. The Fenton system has been shown capable of degradate
benzene and toluene compounds, with massic percentage of remotion near the 99%. / A ind?stria de petr?leo e petroqu?mica em geral ? respons?vel por gerar uma grande
quantidade de res?duos e efluentes qu?micos. Dentre alguns efluentes, ? poss?vel encontrar os
compostos benzeno, tolueno, etilbenzeno e is?meros de xilenos, conhecidos como BTEX.
Esses compostos s?o bastante vol?teis, t?xicos ao meio ambiente e potencialmente causadores
de c?ncer no ser humano. Processos oxidativos avan?ados, POAs, s?o tecnologias n?o
convencionais de tratamento de efluente, os quais podem ser aplicados no tratamento e
remo??o desses compostos. Fenton ? um tipo de POA, o qual utiliza o reagente de Fenton,
per?xido de hidrog?nio e sais de ferro, para promover a oxida??o de org?nicos. Enquanto que
o tipo Foto-Fenton utiliza-se dos reagentes de Fenton acrescido de radia??o UV (ultra
violeta). Esses dois tipos de POA, segundo a literatura, podem ser aplicados a sistemas
compostos de BTEX. O presente trabalho consiste na avalia??o da utiliza??o das tecnologias
Fenton e Foto-Fenton em solu??es aquosas de concentra??o de 100 ppm de BTEX, cada,
simulando-se uma condi??o aproximada de efluente petroqu?mico. Foram utilizados reatores
distintos para cada tipo de POA. Para as respostas anal?ticas de quantidade de remo??o foram
utilizadas as t?cnicas SPME (solid phase microextraction) para extra??o em fase gasosa
desses analitos e a cromatografia gasosa/espetrometria de massas. O arranjo mec?nico do
sistema Foto-Fenton mostrou grandes perdas por volatiliza??o desses compostos. O sistema
Fenton mostrou-se capaz de degradar os compostos benzeno e tolueno, com percentagens
m?ssicas de remo??o na ordem de 99%.
| Identifer | oai:union.ndltd.org:IBICT/oai:repositorio.ufrn.br:123456789/15792 |
| Date | 01 December 2009 |
| Creators | Evangelista, Zuzilene da Silva |
| Contributors | CPF:08580772800, http://lattes.cnpq.br/2621516646153655, Melo, Josette Lourdes de Sousa, CPF:10200720406, http://buscatextual.cnpq.br/buscatextual/visualizacv.do?id=K4787094H6, Telemaco, Emmanuelle de Paiva, CPF:85283274420, http://lattes.cnpq.br/7604286857645796, Teixeira, Ant?nio Carlos Silva Costa, Chiavone Filho, Osvaldo |
| Publisher | Universidade Federal do Rio Grande do Norte, Programa de P?s-Gradua??o em Engenharia Qu?mica, UFRN, BR, Pesquisa e Desenvolvimento de Tecnologias Regionais |
| Source Sets | IBICT Brazilian ETDs |
| Language | Portuguese |
| Detected Language | English |
| Type | info:eu-repo/semantics/publishedVersion, info:eu-repo/semantics/masterThesis |
| Format | application/pdf |
| Source | reponame:Repositório Institucional da UFRN, instname:Universidade Federal do Rio Grande do Norte, instacron:UFRN |
| Rights | info:eu-repo/semantics/openAccess |
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