Made available in DSpace on 2014-12-17T15:01:26Z (GMT). No. of bitstreams: 1
TalithaAB_DISSERT.pdf: 2174474 bytes, checksum: 5fc9b46f49baf0082200961f74eed779 (MD5)
Previous issue date: 2011-08-23 / Conselho Nacional de Desenvolvimento Cient?fico e Tecnol?gico / Effluents from pesticide industries have great difficulty to decontaminate the environment and, moreover, are characterized by high organic charge and toxicity. The
research group Center for Chemical Systems Engineering (CESQ) at the Department of Chemical Engineering of Polytechnical School of University of S?o Paulo and
Department of Chemical Engineering, Federal University of Rio Grande do Norte have been applying the Advanced Oxidation Processes (AOP's) for the degradation of various
types of pollutants. These processes are based on the generation of hydroxyl radicals, highly reactive substances. Thus, this dissertation aims to explore this process, since it
has been proven to be quite effective in removing organic charge. Therefore, it was decided by photo-Fenton process applied to the degradation of the fungicide
Thiophanate methyl in aqueous system using annular reactor (with lamp Philips HPLN 125W) and solar. The samples were collected during the experiment and analyzed for
dissolved organic carbon (TOC) using a Shimadzu TOC (Shimadzu 5050A e VCP). The Doehlert experimental design has been used to evaluate the influence of ultraviolet
radiation, the concentrations of methyl thiophanate (C12H14N4O4S2), hydrogen peroxide (H2O2) and iron ions (Fe2+), among these parameters, was considered the best
experimental conditions, [Fe2+] = 0.6 mmol/L and [H2O2] = 0.038 mol/L in EXP 5 experiment and in SOL 5 experiment, obtaining a percentage of TOC removal of 60%
in the annular reactor and 75% in the solar reactor / Os efluentes das ind?strias de agrot?xicos apresentam grande dificuldade quanto ? sua descontamina??o no meio ambiente e, al?m disso, s?o caracterizados por possu?rem alta carga org?nica e toxicidade. O grupo de pesquisa do Centro de
Engenharia de Sistemas Qu?micos (CESQ) do Departamento de Engenharia Qu?mica da Escola Polit?cnica da Universidade de S?o Paulo e do Departamento de Engenharia
Qu?mica da Universidade Federal do Rio Grande do Norte vem aplicando os Processos Oxidativos Avan?ados (POA) ? degrada??o de diversos tipos de poluentes. Estes
processos s?o baseados na gera??o de radicais hidroxila, subst?ncias altamente reativas. Desta forma, buscou-se explorar esse processo, j? que o mesmo vem se apresentando
bastante eficaz na remo??o de carga org?nica. Portanto, decidiu-se pelo processo foto- Fenton aplicado na degrada??o do fungicida tiofanato met?lico em sistema aquoso,
utilizando reator anular (com l?mpada Philips, HPLN de 125W) e solar. As amostras foram coletadas durante o experimento e analisadas quanto ao teor de carbono org?nico
dissolvido (COT) utilizando um analizador TOC (Shimadzu 5050A e Shimadzu VCH). O planejamento experimental Doehlert utilizado para avaliar a influ?ncia da radia??o
ultravioleta, das concentra??es do tiofanato met?lico (C12H14N4O4S2), do per?xido de hidrog?nio (H2O2) e dos ?ons de ferro [Fe2+]. Dentre estes par?metros, foram
consideradas as melhores condi??es experimentais, sendo: [Fe2+] = 0,600 mmol/L e [H2O2] = 0,038 mol/L no experimento EXP 5 e no experimento SOL 5, obtendo um percentual de remo??o de COT de 60% no reator anular e de 75% no reator solar
| Identifer | oai:union.ndltd.org:IBICT/oai:repositorio.ufrn.br:123456789/15815 |
| Date | 23 August 2011 |
| Creators | Borges, Talitha de Andrade |
| Contributors | CPF:08580772800, http://lattes.cnpq.br/2621516646153655, Telemaco, Emmanuelle de Paiva, CPF:85283274420, http://lattes.cnpq.br/7604286857645796, Silva, Douglas do Nascimento, CPF:00202697495, http://buscatextual.cnpq.br/buscatextual/visualizacv.do?id=K4769122H1, 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 | Portuguese |
| 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 |
Page generated in 0.0026 seconds