Search
Now showing items 1-10 of 405
Propriedades de zeólitas x formadas por partículas micro- e nanométricas contendo cátions alquilamônio lineares
(Universidade Federal de São Carlos, 2016-02-15)
Nanosized NaX zeolites (FAU) (crystallite size = 16 nm; Si/Al ratio = 1,5) were
synthesized and modified through ion exchange with linear alkylammonium cations containing
from one to six carbons, with the intent to ...
Estratégias para redução da produção de acetato em cultivos de Salmonella typhimurium
(Universidade Federal de São Carlos, 2017-02-23)
In recent years, the application of attenuated Salmonella spp. has been investigated for development of several biotechnological products, mainly vaccines. However, the implementation of industrial processes to obtain these ...
Desenvolvimento de reator eletroquímico de leito particulado para processo hidrometalúrgico de produção de cobre
(Universidade Federal de São Carlos, 2014-08-22)
Typical hydrometallurgical processes for metal production such as zinc, copper, nickel and cobalt, among others, are carried out in huge electrochemical tankhouses since only low current densities can be applied in order ...
Estudo da dinâmica do escoamento gás-sólido em resfriadores de catalisador de FCC usando fluidodinâmica computacional (CFD)
(Universidade Federal de São Carlos, 2017-01-26)
The fluid catalytic cracking (FCC) is an important process in oil industry, since it converts heavier fractions in lighter ones, which are more valuable. The catalyst particles (typically m) are deactivated during the ...
Efeito do tamanho de partículas de Cu nas propriedades estruturais e eletrônicas e suas correlações com propriedades catalíticas na desidrogenação do etanol em Cu/SiO2
(Universidade Federal de São Carlos, 2019-03-08)
Metal nanoparticles may exhibit distinct catalytic behavior when there are particle size variations at nanometric scale. Cu nanoparticles supported on SiO2 and CAB-O-SIL® were synthesized with different metal loadings by ...
Modelagem e simulação de aspectos hidrodinâmicos e cinéticos do processo de gaseificação de biomassa utilizando CFD
(Universidade Federal de São Carlos, 2017-06-28)
One of the major problems faced by humanity nowadays is the issue of preserving the environment. In recent years, progress has been accelerated, having a direct influence on the environmental impacts caused by several kinds ...
Avaliação da transferência de calor em fermentações alcoólicas convencional e extrativa
(Universidade Federal de São Carlos, 2019-02-26)
The inhibitory effect of ethanol on yeast and the temperature rise during the fermentation are the major drawbacks of the conventional ethanol production process. The use of extractive alcoholic fermentation with CO2 ...
Influência da concentração de H2O2 na síntese de Nb2O5 com atividade fotocatalítica sob luz visível
(Universidade Federal de São Carlos, 2019-02-22)
Heterogeneous photocatalysis is a technology that can be used for the treatment of wastewater and one of the interesting aspects of this technique is the possibility of using visible light (solar) to activate the photocatalyst. ...
Estudo cinético da hidrólise de xilooligômeros por xilanases e beta-xilosidase na forma livre e imobilizada
(Universidade Federal de São Carlos, 2018-03-15)
This work aims to contribute to the development of the ethanol production process from xylooligomers (XO) extracted from sugarcane bagasse hemicellulose through the hydrolysis of XO to xylose, xylose isomerization catalyzed ...
Soybean biorefinery with residues exploitation : process assessment
(Universidade Federal de São Carlos, 2016-06-27)
Soybean seed is a renewable feedstock and the production process of soybean meal and
soybean refined oil generates residues that can be exploited, in such a way that the biorefinery
concept can be applied to this production ...