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Mostrando ítems 61-70 de 144
“Compreensão das propriedades estruturais e de superfície de catalisadores de platina promovidos com cério através de técnicas de caracterização in situ sob a reação de deslocamento gás-água”
(Universidade Federal de São Carlos, 2014-04-28)
Pt based catalysts were measured with in situ X ray absorption fine structure spectroscopy (XAFS) to obtain information about the catalyst crystalline structure and electronic properties as a function of catalyst composition, ...
Estudos de melhorias no processo de hidrólise enzimática de biomassas para produção de etanol
(Universidade Federal de São Carlos, 2016-02-04)
In this work it was evaluated, firstly, the performance of four impellers configurations in the enzymatic hydrolysis of sugarcane bagasse. The configurations evaluated were: (1): Rushton turbine - Rushton turbine; (2): ...
Recuperação de metais a partir da lama vermelha
(Universidade Federal de São Carlos, 2015-08-25)
This paper describes an integrated process for recovering aluminum, iron, titanium, sodium and silica from red mud through a hydrometallurgical treatment sequence. The disposal of red mud, which is the largest waste produced ...
Avaliação da transferência de quantidade de movimento, energia e das espécies químicas em um prato perfurado de destilação através da fluidodinâmica computacional
(Universidade Federal de São Carlos, 2016-03-24)
The development of the design of chemical processes has received increasing improvement, incorporating sophisticated mathematical models, which allowed better simulation of its real behavior. Distillation is one of the ...
Lipases imobilizadas em suportes híbridos como biocatalisadores para a produção de ésteres de açúcares
(Universidade Federal de São Carlos, 2016-05-25)
The use of lipases in large scale processes is limited due to their high cost. The reuse of the catalyst can contribute to make the enzymatic process more attractive. Hydrophobic supports are the mostly used for lipase ...
Metodologia para guiar o desenvolvimento e implementação industrial de novas tecnologias unindo engenharia econômica e Engenharia de (bio)processos e sistemas : aplicação à produção de etanol de segunda geração
(Universidade Federal de São Carlos, 2016-03-18)
Lignocellulosic ethanol, also called second generation ethanol, is a promising alternative for decreasing fossil fuel dependency globally. Nevertheless, its production process still needs further improvements in order to ...
Síntese e propriedades de sílicas híbridas contendo surfactantes catiônicos
(Universidade Federal de São Carlos, 2015-09-21)
The control of pore geometry and pore diameter of silica mesoporous materials is
necessary for application of these materials, mainly in industrial process that depends on the shape selectivity. This way, considerable ...
Avaliação da qualidade do ar em interiores e ambientes abertos de uma universidade em São Carlos - SP
(Universidade Federal de São Carlos, 2016-02-26)
Research in the area of indoor air quality (IAQ) has increased in recent decades, but IAQ standards remain scarce in Brazil and are only applicable to air-conditioned environments. Classrooms have attracted particular ...
Cristalização da sacarose : estudos experimentais, modelagem matemática e influência de impurezas
(Universidade Federal de São Carlos, 2016-02-29)
Sugarcane is one of the main Brazilian crops. Studies encompassing unit operations of its industrial processes are old and broad in literature. However, the industrial process itself has changed very slowly over the years, ...
Simulação de um alimentador Venturi em trecho ascendente no transporte pneumático de sólidos
(Universidade Federal de São Carlos, 2012-08-30)
The radial and axial distributions of coarse solids when fed directly in a riser are unknown, despite this type of feeding is very important for drying and preheating of solids during conveying. In this context, this thesis ...