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Previous issue date: 2012-11-28 / Coordena??o de Aperfei?oamento de Pessoal de N?vel Superior / The worldwide concern regarding the use of sustainable energy and preserving the
environment are determining factors in the search for resources and alternative sources
of energy and therefore fuel less aggressive nature. In response to these difficulties
Biodiesel has emerged as a good solution because it is produced from renewable
sources, produces burns cleaner and is easily reproducible. This work was synthesized
with biodiesel oil, sunflower via homogeneous catalysis in the presence of KOH, with
and without the use of BHT and subsequently added to the blends BX (a proportion of
biodiesel X = 5, 10, 15 and 20 %). Atmospheric distillation of the analysis, performed
in blends with and without BHT were collected residue generated by each sample and
performed a study heat from the thermogravimetric analysis at a heating rate of 10
?C*min-1, nitrogen atmosphere and heating to 600 ?C. According to the specifications
of Resolution N 7/2008 for biodiesel, it was found that the synthesized material was in
accordance with the specifications. For blends showed that the samples are in
accordance with the Resolution of ANP N 42/2009. From the TG / DTG curves of the
samples of biodiesel, blends and waste can be seen that these show a single loss of
thermal decomposition concerning constituents present in each sample. The blends
without BHT with ratios of 5%, 10% and 15% biodiesel showed a lower amount of
waste (1,07%; 1,09% e 1,10%) to mineral diesel (1,15%). Therefore, it is concluded
that the addition of biodiesel with diesel mineral can improve some physico-chemical
parameters, but also, depending on the added amount, decreasing the amount of waste
generated. This fact is of great importance because the carbonaceous residue can cause
problems in mechanical equipment and parts for vehicles, causing more frequent
maintenance, and this is not desirable / A preocupa??o mundial com rela??o ao uso sustent?vel de energia e a preserva??o do
meio-ambiente s?o fatores determinantes na busca por meios e fontes alternativas de
energia e, consequentemente, de combust?veis menos agressivos ? natureza. Em
resposta a essas dificuldades o Biodiesel tem se apresentado como uma boa solu??o,
pois ? produzido a partir de fontes renov?veis, produz queima mais limpa e ? de f?cil
reprodutibilidade. Neste trabalho, foi sintetizado biodiesel com o ?leo de girassol, via
cat?lise homog?nea na presen?a de KOH, com e sem o uso de BHT, e posteriormente,
adicionado ?s blendas BX (com propor??es de biodiesel de X = 5, 10, 15 e 20%). Da
an?lise de Destila??o Atmosf?rica, realizada nas blendas com e sem BHT, foram
coletados o res?duo gerado por cada amostra e efetuado um estudo t?rmico, a partir da
An?lise Termogravim?trica, na raz?o de aquecimento de 10 ?C.min-1, atmosfera de
nitrog?nio e aquecimento at? 600 ?C. De acordo com as especifica??es da Resolu??o
N? 7/2008 para o biodiesel, verifica-se que o material sintetizado encontra-se em
conformidade com as especifica??es. Para as blendas observa-se que as amostras est?o
de acordo com a Resolu??o da ANP N? 42/2009. A partir das curvas TG/ DTG das
amostras de biodiesel e res?duos pode-se observar que estas apresentaram uma ?nica
perda de decomposi??o t?rmica referentes aos constituintes presentes em cada amostra.
J? para as blendas, observam-se duas perdas de decomposi??o t?rmica, comprovadas
pela DTG, referentes aos componentes do ?leo diesel e do biodiesel. As blendas sem
BHT com propor??es de biodiesel de 5%, 10% e 15% apresentaram uma quantidade
de res?duo (1,07%; 1,09% e 1,10%) inferior ao diesel mineral (1,15%). Sendo assim,
conclui-se que a adi??o de biodiesel ao diesel mineral pode contribuir para melhorar
alguns par?metros f?sico-qu?micos, como, tamb?m, dependendo da quantidade
adicionada, diminuir a quantidade de res?duo gerado. Este fato ? de grande relev?ncia,
pois o res?duo carbon?ceo pode causar problemas mec?nicos em equipamentos e pe?as
dos ve?culos, causando manuten??es mais frequentes, e este aspecto n?o ? desej?vel
| Identifer | oai:union.ndltd.org:IBICT/oai:repositorio.ufrn.br:123456789/12977 |
| Date | 28 November 2012 |
| Creators | Campos, Let?cia de Oliveira |
| Contributors | CPF:42314070453, http://lattes.cnpq.br/1595902438130772, Ara?jo, Ant?nio Souza de, CPF:35530502415, http://lattes.cnpq.br/9770622597949866, Gondim, Amanda Duarte, CPF:03014598437, http://lattes.cnpq.br/6738828245487480, Castro, Francisco Laerte de, CPF:77862589491, http://lattes.cnpq.br/2913544384537886, Fernandes J?nior, Valter Jos? |
| Publisher | Universidade Federal do Rio Grande do Norte, Programa de P?s-Gradua??o em Ci?ncia e Engenharia do Petr?leo, UFRN, BR, Pesquisa e Desenvolvimento em Ci?ncia e Engenharia de Petr?leo |
| 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/embargoedAccess |
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