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Previous issue date: 2011-02-21 / The underground reservoirs of fuel retailing system represent an
environmental threat, because once in bad conservation, these tanks allow fuel leakage
and infiltration. For soil contaminated with fuel, such as diesel oil, the present study
introduces the microemulsion systems used by the method of washing. In tests carried
out in column with a sample of sandy soil artificially contaminated and previously
characterized as to its void level to porosity, to permeability which is an important
parameter concerning the study of the method of washing. While microemulsions were
characterized for their viscosity and wettability, a variation of active matter was also
done departing from the original formulation. The hydraulic diffusivity of the
microemulsion was studied so as the injection of such fluid in a soil with sandy
characteristics. The results of the extractions revealed the excellent performance of
these systems which get to remove around 95% of diesel fuel. This proves the efficiency
of the microemulsion in the process of removal of diesel fuel from the soil with the
advantage of being a system easily obtainable and less aggressive to the environment
when compared to organic solvents. / Os reservat?rios subterr?neos do sistema retalhista de combust?veis
representam uma amea?a ambiental, pois em mau estado de conserva??o esses tanques
permitem o vazamento e infiltra??o do combust?vel. Para solo contaminado com
combust?veis como o ?leo diesel este trabalho apresenta os sistemas microemulsionados
aplicados pelo m?todo de lavagem. Em ensaios feitos em coluna com amostra de solo
arenoso contaminado artificialmente e previamente caracterizado quanto ao seu ?ndice
de vazios, ? porosidade, ? permeabilidade que s?o par?metros importantes no tocante ao
estudo do m?todo de lavagem. Enquanto as microemuls?es foram caracterizadas por sua
viscosidade e sua molhabilidade, tamb?m foi realizada a varia??o de mat?ria ativa
partindo da formula??o original. A difusividade hidr?ulica da microemuls?o foi
estudada a fim de que seja avaliada a inje??o deste fluido num solo com as
caracter?sticas de arenoso. Os resultados das extra??es mostraram excelente
desempenho desses sistemas chegando a retirar em torno de 95% do ?leo diesel. O que
comprova a efici?ncia da microemuls?o no processo remo??o do ?leo diesel do solo
com a vantagem de ser um sistema de f?cil obten??o e menos agressivo ao meio
ambiente quando comparado aos solventes org?nicos.
| Identifer | oai:union.ndltd.org:IBICT/oai:repositorio.ufrn.br:123456789/15811 |
| Date | 21 February 2011 |
| Creators | Nascimento, Luiz Ant?nio do |
| Contributors | CPF:59545844434, http://buscatextual.cnpq.br/buscatextual/visualizacv.do?id=K4798645D3, Gomes, Erika Adriana de Santana, CPF:02995464466, http://lattes.cnpq.br/2762469805823547, Dantas Neto, Afonso Avelino, CPF:05641284491, http://buscatextual.cnpq.br/buscatextual/visualizacv.do?id=K4783215D9, Leite, Ricardo Henrique de Lima, Barros Neto, Eduardo Lins de |
| 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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