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Previous issue date: 2010-12-21 / Innovative technologies using surfactant materials have applicability in several industrial fields, including petroleum and gas areas. This study seeks to investigate the use of a surfactant derived from coconut oil (SCO saponified coconut oil) in the recovery process of organic compounds that are present in oily effluents from petroleum industry. For this end,
experiments were accomplished in a column of small dimension objectifying to verify the influence of the surfactant SCO in the efficiency of oil removal. This way, they were prepared
emulsions with amount it fastens of oil (50, 100, 200 and 400 ppm), being determined the great concentrations of surfactant for each one of them. Some rehearsals were still accomplished with produced water of the industry of the petroleum to compare the result with the one of the emulsions. According to the experiments, it was verified that an increase of the
surfactant concentration does not implicate in a greater oil removal. The separation process use gaseous bubbles formed when a gas stream pass a liquid column, when low surfactant
concentrations are used, it occurs the coalescence of the dispersed oil droplets and their transport to the top of the column, forming a new continuous phase. Such surfactants lead to a gas-liquid interface saturation, depending on the used surfactant concentration, affecting the flotation process and influencing in the removal capacity of the oily dispersed phase. A
porous plate filter, with pore size varying from 40 to 250 mm, was placed at the base of the column to allow a hydrodynamic stable operation. During the experimental procedures, the
operating volume of phase liquid was held constant and the rate of air flow varied in each experiment. The resulting experimental of the study hydrodynamic demonstrated what the
capturing of the oil was influenced by diameter of the bubbles and air flow. With the increase flow of 300 about to 900 cm3.min-1, occurred an increase in the removal of oil phase of 44% about to 66% and the removal kinetic of oil was defined as a reaction of 1? order. / Tecnologias inovadoras que usam materiais tensoativos t?m aplicabilidade em v?rios campos industriais, dentre eles petr?leo e g?s natural. Este estudo busca investigar o uso de um tensoativo, derivado de ?leo de coco (OCS - ?leo de coco saponificado), no processo de recupera??o de compostos org?nicos presentes em efluentes oleosos da ind?stria de petr?leo. Para este fim, foram realizados experimentos em uma coluna de bancada objetivando verificar a influ?ncia do tensoativo OCS na efici?ncia de remo??o de ?leo. Desta forma, foram preparadas emuls?es com quantidades fixas de ?leo (50, 100, 200 e 400 ppm), determinandose a concentra??o ?tima de tensoativo para cada uma delas. Foram, tamb?m, realizados alguns ensaios com ?gua de produ??o da ind?stria de petr?leo, visando comparar o resultado com o das emuls?es. O processo de separa??o consiste no uso de bolhas gasosas formadas quando um fluxo de g?s passa em uma coluna l?quida, com concentra??es de tensoativo, ocorrendo a coalesc?ncia das gotas de ?leo dispersas e, consequentemente, o transporte delas ao topo da coluna, formando uma nova fase oleosa cont?nua. O processo fundamenta-se na satura??o de tensoativo na interface g?s-l?quido, dependendo da concentra??o de tensoativo usada, resultando na flota??o da fase ?leo dispersa. Um filtro de prato poroso, com tamanho de poro que varia de 40 a 250 μm, foi colocado ? base da coluna para permitir uma opera??o hidrodin?mica est?vel. Durante os procedimentos experimentais, o volume operacional da fase l?quida foi mantido constante e a taxa de fluxo de ar variada em cada experimento. Os resultados experimentais do estudo hidrodin?mico demonstraram que a captura do ?leo foi influenciada pelos di?metros das bolhas e vaz?es de ar. Com o aumento da vaz?o de 300 para 900 cm3.min-1, ocorreu um aumento de remo??o da fase ?leo de 44% para 66% e a cin?tica de remo??o do ?leo foi definida como uma rea??o de 1? ordem
| Identifer | oai:union.ndltd.org:IBICT/oai:repositorio.ufrn.br:123456789/17709 |
| Date | 21 December 2010 |
| Creators | Lima, L?da Maria Oliveira de |
| Contributors | CPF:59545844434, http://buscatextual.cnpq.br/buscatextual/visualizacv.do?id=K4798645D3, Oliveira, Humberto Neves Maia de, CPF:22179763468, http://lattes.cnpq.br/7302633941782540, Dantas, Tereza Neuma de Castro, CPF:07286937391, http://buscatextual.cnpq.br/buscatextual/visualizacv.do?id=K4783139Z0&dataRevisao=null, Santanna, Vanessa Cristina, CPF:77938780430, http://lattes.cnpq.br/9445575768909084, Moura, Maria Carlenise Paiva de Alencar, CPF:21414130368, http://buscatextual.cnpq.br/buscatextual/visualizacv.do?id=K4702157Y9, Dantas Neto, Afonso Avelino, Barros Neto, Eduardo Lins de |
| Publisher | Universidade Federal do Rio Grande do Norte, Programa de P?s-Gradua??o em Qu?mica, UFRN, BR, F?sico-Qu?mica; Qu?mica |
| Source Sets | IBICT Brazilian ETDs |
| Language | Portuguese |
| Detected Language | English |
| Type | info:eu-repo/semantics/publishedVersion, info:eu-repo/semantics/doctoralThesis |
| 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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