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Previous issue date: 2013-07-14 / Coordena??o de Aperfei?oamento de Pessoal de N?vel Superior / Concern with the environment has lead to an increase in the research for new adsorption techniques, low cost adsorvent materials and with high availability. Many works search the development of higher selectivity modified adsorvents. The Brazil has the second world reserve of oiled shale, because of it, the use of that reject is of great interest. This study has the goal of characterize and analyze the retorted shale, reject of the pirobetuminous shale pyrolysis, and the retorted shale modified through the humid impregnation method, wich the precursors were the metals nitrates ( Cobalt, Nickel and Copper), to the usage has adsorvent materials. The samples were characterized chemically, textually and structurally by the X ray fluorescence (XRF), BET, X ray diffraction (XRD) and scanning electronic microscopy (SEM) techniques. The impregnated samples showed a reduction in the superficial area and in the pore volume when compared with the retorted shale. Besides that, diffractions referred to the impregnated metals where observed in the XRD analysis, wich were the same metals detected in the XRF and SEM analysis. The materials showed homogeneity in it s composition. The results shows that the materials presents adequate adsorption characteristics / Preocupa??es ambientais t?m levado ao aumento de pesquisas em busca de novas t?cnicas de adsor??o, materiais adsorventes de baixo custo e dispon?veis em grande quantidade. Muitos trabalhos buscam desenvolver tecnologias com adsorventes modificados que aumentem a seletividade. O Brasil possui a segunda maior reserva mundial de xisto ole?geno, por esse motivo, o aproveitamento desse rejeito ? de grande interesse. Este estudo teve objetivo de analisar e caracterizar o xisto retortado, rejeito proveniente da pir?lise do xisto pirobetuminoso, e o xisto retortado modificado atrav?s do m?todo de impregna??o por via ?mida, cujos precursores foram nitratos de metais (ferro, n?quel e cobre), para utiliza-los como adsorventes. As amostras foram caracterizadas qu?mica, textural e estruturalmente, pelas an?lises de fluoresc?ncia de raios X (FRX), ?rea superficial espec?fica (BET), difra??o de raios X (DRX) e microscopia eletr?nica de varredura (MEV). As amostras impregnadas apresentaram redu??o na ?rea superficial e no volume de poros quando comparados com o xisto retortado. Al?m disso, difra??es referentes aos metais impregnados, foram observadas nas an?lises de DRX, sendo os mesmos detectados na an?lise de FRX e MEV, os materiais mostraram heterogeneidade em sua composi??o. Os resultados indicaram que os adsorventes apresentavam caracter?sticas adequadas para adsor??o
| Identifer | oai:union.ndltd.org:IBICT/oai:repositorio.ufrn.br:123456789/12807 |
| Date | 14 July 2013 |
| Creators | Silva, Maria de F?tima Dantas e |
| Contributors | CPF:04514998320, http://lattes.cnpq.br/5840621182000517, Motta, Fabiana Villela da, CPF:24779953839, http://lattes.cnpq.br/9918299069511517, Braga, Renata Martins, CPF:05165674460, http://lattes.cnpq.br/4603529162393328, 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 |
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