Made available in DSpace on 2014-12-17T14:06:45Z (GMT). No. of bitstreams: 1
RosaneMPBO.pdf: 98647 bytes, checksum: ef6407a549134b95288d059aac5174a4 (MD5)
Previous issue date: 2008-05-02 / Coordena??o de Aperfei?oamento de Pessoal de N?vel Superior / The natural gas is an alternative source of energy which is found underground in porous and permeable rocks and being associated or not to the oil. Its basic composition includes methane, other hydrocarbon and compounds such as carbon dioxide, nitrogen, sulphidric gas, mercaptans, water and solid particles. In this work, the dolomite mineral, a double carbonate of calcium and magnesium whose the chemical formula is CaMg(CO3)2, was evaluated as adsorbent material. The material was characterized by granulometric analysis, X-ray fluorescence, X-ray diffraction, thermogravimetric
analysis, differential thermal analysis, specific surface area, porosity, scanning electronic microscopy and infrared spectroscopy. Then the material was functionalized
with diethanolamine (dolomite+diethanolamine) and diisopropylamine (dolomite+diisopropylamine). The results indicated that the adsorbents presented appropriate physiochemical characteristics for H2S adsorption. The adsorption tests were accomplished in a system coupled to a gas chromatograph and the H2S monitoring in the output of the system was accomplished by a pulsed flame photometric detector (PFPD). The adsorbents presented a significant adsorption capacity. Among the analyzed adsorbents, the dolomite+diethanolamine presented the best capacity of
adsorption. The breakthrough curves obtained proved the efficiency of this process / O g?s natural ? uma fonte de energia alternativa encontrada no subsolo em rochas porosas e perme?veis, podendo estar associado ou n?o ao petr?leo. Sua composi??o b?sica inclui metano, outros hidrocarbonetos e compostos tais como o di?xido de carbono, nitrog?nio, g?s sulf?drico, mercaptanas, ?gua e part?culas s?lidas. Neste trabalho, o mineral dolomita, um carbonato duplo de c?lcio e magn?sio de f?rmula
qu?mica CaMg(CO3)2, foi avaliado como material adsorvente. O material foi caracterizado atrav?s de an?lise granulom?trica, fluoresc?ncia de raios X, difra??o de
raios X, an?lise termogravim?trica, an?lise t?rmica diferencial, ?rea de superf?cie espec?fica, porosidade, microscopia eletr?nica de varredura, espectroscopia de absor??o
na regi?o do infravermelho e, posteriormente, foi funcionalizado com dietanolamina (dolomita+dietanolamina) e diisopropilamina (dolomita+diisopropilamina). Os resultados indicaram que os adsorventes apresentavam caracter?sticas f?sico-qu?micas adequadas para adsor??o de H2S. Os ensaios de adsor??o foram realizados em um sistema acoplado a um cromat?grafo a g?s e o monitoramento do H2S na sa?da do
sistema foi realizado por um detector fotom?trico de chama pulsante (PFPD). Os adsorventes apresentaram uma capacidade de adsor??o significativa. Dentre os
adsorventes analisados, a dolomita+dietanolamina apresentou melhor capacidade de adsor??o, as curvas de ruptura obtidas comprovaram a efici?ncia deste processo
| Identifer | oai:union.ndltd.org:IBICT/oai:repositorio.ufrn.br:123456789/12656 |
| Date | 02 May 2008 |
| Creators | Oliveira, Rosane Maria Pessoa Bet?nio |
| Contributors | CPF:04514998320, http://lattes.cnpq.br/5840621182000517, Ara?jo, Ant?nio Souza de, CPF:35530502415, http://lattes.cnpq.br/9770622597949866, Barros, Joana Maria de Farias, CPF:85239658404, http://lattes.cnpq.br/1016070459137884, Melo, Dulce Maria de Ara?jo, Melo, Marcus Ant?nio de Freitas |
| Publisher | Universidade Federal do Rio Grande do Norte, Programa de P?s-Gradua??o em Ci?ncia e Engenharia de Materiais, UFRN, BR, Processamento de Materiais a partir do P?; Pol?meros e Comp?sitos; Processamento de Materiais a part |
| 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 0.0029 seconds