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Featured researches published by Edjane F. B. Silva.


Revista Virtual de Química | 2014

Analysis of Petroleum Oily Sludge Produced from Oil-Water Separator

Cícero S. Lima; Regineide O. Lima; Edjane F. B. Silva; Késia Kelly V. Castro; Osvaldo Chiavone Filho; Sandra de A. Soares; Antonio S. Araujo

The petroleum oily sludge is formed during the production, transportation, and storage processes as well as in the oil refinery plant. The elemental analysis was performed with samples of petroleum oily sludge collected in the State of Rio Grande do Norte. For the carbon and hydrogen elements, small differences were observed between them, but for the oxygen element, bigger differences between the sludge samples were noticed. They have presented differences in the chemical composition of inorganic and organic parts. The sludge from oil-water separator (OWS) 2 showed a high amount of oil (94.88%), being considered a high value-added residue by the oil industry. In the analyses of saturated, aromatics, resins, and asphaltenes (SARA) components, the sludge from the unloading had a high amount of saturates. The inorganic material separated from the sludge of the OWS 2 was characterized, and presented a lot of sulfur (41.57 %). The sludge analyzed showed a high value of organic components, thus such material can be handled and reprocessed in processing units within the oil industry.


Materials Science-poland | 2015

Evaluation of the acid properties of aluminossilicate MCM-22 material synthesized under static conditions

Meiry Glaúcia Freire Rodrigues; Antonielly S. Barbosa; Ana C. F. Coriolano; Edjane F. B. Silva; Antonio S. Araujo

Abstract The hydrothermal synthesis of MCM-22 zeolite was carried out using silica, sodium aluminate and hexamethyleneimine, under static conditions at 150 °C for a period of 10 days, followed by washing with deionized water, drying overnight and calcination at 650 °C. The obtained material was characterized by X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FT-IR) and scanning electron microscopy (SEM). The XRD analysis evidenced that MCM-22 presented a well defined MWW structure. The FT-IR spectrum confirmed the efficiency of the hexamethyleneimine as an organic template used to direct the structure of the MCM-22 zeolite under static conditions. The SEM image indicated that the particles are spherical in shape, with a diameter of ca. 10 μm. The acid properties of the MCM-22 zeolite, as determined by n-buthylamine adsorption, were investigated in the temperature ranges of 105 to 300 °C and 300 to 525 °C, relative to medium and strong acid sites, respectively.


Journal of Materials Science | 2013

Determination of SBA-15 acidity through n-butyl amine TPD: a theoretical and experimental study

Geraldo E. Luz; Francisco das Chagas A. Lima; Cicero O. Costa Neto; Gizeuda L. Paz; Edjane F. B. Silva; Marcela N. Barbosa

In this study, the interaction ways between n-butyl amine and SBA-15 molecular sieve were evaluated when the TPD technique is carried out to determine the total acidity of that solid. Experimental results (FTIR, TG/DTG, total acid, and catalytic activity) and theoretical calculations demonstrated that the n-butyl amine, used as probe molecule to total acidity determined by TPD, can act as acid or base depending on the nature and force of the active sites on SBA-15.


Journal of Thermal Analysis and Calorimetry | 2011

Carbon dioxide adsorption over DIPA functionalized MCM-41 and SBA-15 molecular sieves

Marcela N. Barbosa; Antonio S. Araujo; Luzia P. F. C. Galvão; Edjane F. B. Silva; Anne Gabriella Dias Santos; Geraldo E. Luz; V. J. Fernandes


Journal of Thermal Analysis and Calorimetry | 2011

Kinetic study of low density polyethylene degradation on the silicoaluminophospate SAPO-11

Edjane F. B. Silva; Marcílio P. Ribeiro; Luzia P. F. C. Galvão; V. J. Fernandes; Antonio S. Araujo


Journal of Thermal Analysis and Calorimetry | 2011

Kinetic study of degradation of heavy oil over MCM-41

Edjane F. B. Silva; Marcílio P. Ribeiro; Ana Catarina Fernandes Coriolano; Ana C. R. Melo; Anne Gabriella Dias Santos; V. J. Fernandes; Antonio S. Araujo


Journal of Thermal Analysis and Calorimetry | 2011

Model-free kinetics applied for the removal of CTMA+ and TPA+ of the nanostructured hybrid AlMCM-41/ZSM-5 material

Maria J. F. Costa; Antonio S. Araujo; Edjane F. B. Silva; Mirna F. Farias; V. J. Fernandes; Petrus A. Santa-Cruz; Jose G.A. Pacheco


Journal of Thermal Analysis and Calorimetry | 2011

Effect of the AL-MCM-41 catalyst on the catalytic pyrolysis of atmospheric petroleum residue (ATR)

Késia Kelly V. Castro; Ana A. D. Paulino; Edjane F. B. Silva; Thiago Chellappa; Maria B. D. L. Lago; V. J. Fernandes; Antonio S. Araujo


Journal of Thermal Analysis and Calorimetry | 2011

Thermal stability evaluation of methylic biodiesel obtained for different oilseeds

Hellyda K. T. A. Silva; Thiago Chellappa; Fabíola C. Carvalho; Edjane F. B. Silva; Tarcísio A. Nascimento; Antonio S. Araujo; V. J. Fernandes


Journal of Thermal Analysis and Calorimetry | 2011

Study of degradation kinetics of sunflower oil on H-Beta zeolite

Ana C. R. Melo; Edjane F. B. Silva; Larissa Cicianny Luz Ferreira de Araújo; Mirna F. Farias; Antonio S. Araujo

Collaboration


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Antonio S. Araujo

Federal University of Rio Grande do Norte

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V. J. Fernandes

Federal University of Rio Grande do Norte

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Ana C. R. Melo

Federal University of Rio Grande do Norte

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Geraldo E. Luz

Federal University of Rio Grande do Norte

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Marcílio P. Ribeiro

Federal University of Rio Grande do Norte

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Anne Gabriella Dias Santos

Federal University of Rio Grande do Norte

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Késia Kelly V. Castro

Federal University of Rio Grande do Norte

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Luzia P. F. C. Galvão

Federal University of Rio Grande do Norte

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Marcela N. Barbosa

Federal University of Rio Grande do Norte

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Mirna F. Farias

Federal University of Rio Grande do Norte

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