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Denise Maria Malachini Miotto, Nádia Regina Camargo Fernandes Machado (Author)
Pág. 1627 - 1635
In this work, the adsorption capacity of modified zeolites, CaX and MgX, was evaluated in contact with a by-product solution of the stevioside extraction process, a sweetener extracted from Stevia rebaudiana leaves. The effects of adsorption process in t...
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Nádia Regina Camardo Fernandes Machado, Roberta Carolina Pelissari Rizzo, Robson Pablo Sobradiel Peguin (Author)
Pág. 1637 - 1642
Cu/Nb2O5 and Cu/Nb2O5/Al2O3 were studied as catalysts in ethanol steam-reforming for hydrogen production. They were prepared through impregnation, with different copper and Nb2O5 concentrations. Cu/ZnO/Al2O3 (G66), a commercial catalyst for methanol refo...
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Veronice Slusarski Santana, Nádia Regina Camargo Fernandes Machado (Author)
Pág. 1681 - 1686
This research aims to work with photocatalysis as an alternative in the treatment of textile wastewater, because of the unsatisfactory degradation of some dyes by the conventional biological methods. Photocatalytic degradation tests were done in three na...
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Elida de Paula Moraes, Nádia Regina Camargo Fernandes Machado (Author)
Pág. 1375 - 1380
Selective adsorption on zeolites X and A was studied with Stevia rebaudiana (Bert.) Bertoni (Asteraceae) extract clarification. Ionic exchanges were made with calcium and barium ions in zeolites NaX and NaA and the effect of contact of aqueous extract of...
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Valmir Calsavara, Carla Kazumi Carrascoza Yoshida, Henrique Delfante de Pádua Cardoso, Nádia Regina Camardo Fernandes Machado (Author)
Pág. 1179 - 1184
Methodologies of ZSM-5 zeolite synthesis proposed in the literature were evaluated. Characterization of the synthesized samples was done by atomic absorption, infrared spectroscopy, X-ray diffraction and surface area analysis. Several parameters, such as...
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Rita de Cássia Colman, Anderson Alex de Almeida, Nádia Regina Camardo Fernandes Machado, José Carlos de Souza (Author)
Pág. 1213 - 1217
New ways to produce hydrogen, thought to be the ideal fuel, have been studied and aim at a not-pollutant fuel. Ethanol reform is based on a simple reaction with many advantages for various countries, such as Brazil, where ethanol is produced on a large s...
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Classius Ferreira da Silva, Carla Kazumi Carrascoza Yoshida, Nádia Regina Camargo Fernandes Machado, Francisco Maugeri Filho (Author)
Pág. 769 - 772
The isopropanol decomposition is used as a model reaction for determining the acid or basic characteristics of zeolites, specially zeolites of the type Y due to the facility of decomposition in both sites. The acid sites produce water and propene, while ...
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Renata Padilha de Souza, Ana Maria Ferrari Lima, Osvaldo Pezoti, Veronice Sluzarski Santana, Marcelino Luiz Gimenez, Nádia Regina C. Fernandes-Machado (Author)
Pág. 217 - 226
In this work, photocatalysis was employed in the treatment of vinasse using TiO2 and UV light. The parameters investigated were: TiO2 phases (anatase and rutile) and vinasse pre-treatments (coagulation/flocculation and dilution). The TiO2 catalysts emplo...
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