Made available in DSpace on 2014-12-17T15:41:53Z (GMT). No. of bitstreams: 1
HialeYSS_DISSERT.pdf: 3935527 bytes, checksum: 49a917d8f6b548b50f34324737a29f0a (MD5)
Previous issue date: 2010-01-21 / In this work, expanded perlite, a mineral clay, consisting of SiO2 and Al2O3 in
the proportions of 72.1 and 18.5%, respectively, was used as an adsorbent for oil in
its pure expanded form as well as hydrofobized with linseed oil. Thermogravimetry
(TG), Derivative Thermogravimetry (DTG) and Differential Thermal Analysis (DTA)
were used to study the thermal behavior and quantify the percent adsorption of
perlite in differents processes comparing the results with the ones obtained using
Gravimetric Analysis. In the process of hydrophobization with linseed oil
granulometric fractions > 20, 20-32 and 32-60 mesh were used and adsorption tests
with crude oil were performed in triplicate at room temperature. The results obtained
by TG/DTG in dynamic atmosphere of air showed mass losses in a single step for the
expanded perlite with pure adsorbed oil, indicating that the adsorption of oil was
limited and that the particle size did not in this process. Linseed oil has performed
well as an agent of hydrophobized perlite (32 to 60 mesh) indicating a maximum
percentage of 59.9% and 68.6% the linseed with a fraction range from considering
the data obtained by thermogravimetry and Gravimetry, respectively. The adsorption
of oil in the expanded perlite and hydrofobized pure perlite with linseed oil did not
produce good results, characterizing an increase of 0.5 to 4.6% in pure perlite and
3.3% in hydrofobized perlite with granulometric 32 to 60 mesh / Nesse trabalho a perlita expandida, um argilomineral, constitu?do de SiO2 e
Al2O3 nas propor??es de 72,1 e 18,5%, respectivamente foi utilizada como
adsorvente para petr?leo na sua forma pura expandida como tamb?m hidrofobizada
com ?leo de linha?a. Para isso, utilizou-se a Termogravimetria (TG), a
Termogravimetria Derivada (DTG) e a An?lise T?rmica Diferencial (DTA) para
estudar o comportamento t?rmico e verificar o percentual de adsor??o da perlita nos
processos utilizados, em compara??o com a An?lise Gravim?trica. No processo de
hidrofobiza??o com o ?leo de linha?a utilizou-se as fra??es > 20, 20 a 32 e 32 a 60
mesh e os testes de adsor??o com o petr?leo bruto foram realizados em triplicata em
temperatura ambiente. Os resultados obtidos por TG/DTG em atmosfera din?mica
de ar mostraram perdas de massa em uma ?nica etapa para a perlita expandida
pura adsorvida com petr?leo, indicando que a adsor??o de petr?leo foi limitada e que
a granulometria n?o interferiu nesse processo. O ?leo de linha?a apresentou bons
resultados como agente hidrofobizante da perlita indicando um percentual m?ximo
de 59,9% e 68,6% de linha?a na fra??o de 32 a 60 mesh considerando os dados
obtidos por Termogravimetria e Gravimetria, respectivamente. A adsor??o do
petr?leo na perlita pura expandida e na perlita hidrofobizada com ?leo de linha?a n?o
apresentou bons resultados, caracterizando um aumento de 0,5 a 4,6% na perlita
pura e 3,3 % na perlita hidrofobizada de 32 a 60 mesh
| Identifer | oai:union.ndltd.org:IBICT/oai:repositorio.ufrn.br:123456789/17640 |
| Date | 21 January 2010 |
| Creators | Souza, Hiale Yane Silva de |
| Contributors | CPF:44420773472, http://lattes.cnpq.br/9563490368583906, Melo, Jailson Vieira de, CPF:50073788449, http://lattes.cnpq.br/7275955550556570, Ara?jo, Sulene Alves de, CPF:51205645420, http://lattes.cnpq.br/1916903519453512, Fernandes, Nedja Suely |
| 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/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 0.0028 seconds