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Transesterificação heterogênea catalisada por sílicas contendo sítios básicos e cátions cetilvinilimidazólio
(Universidade Federal de São Carlos, 2022-05-12)
Homogeneous catalysis is the most used process in the production of biodiesel, although this process has several disadvantages such as: the catalyst cannot be easily reused and requires parallel processes for separation ...
Estudos sobre a produção de nanofibras de PVA via electrospinning e sua aplicação em filtração de nanoaerossóis
(Universidade Federal de São Carlos, 2022-09-30)
Poly(vinyl alcohol) nanofibers for air filtration were produced by electrospinning using citric acid and different concentrations of Triton X-100 surfactant. Filtration tests with nanoparticles (5.94–224.7 nm) and tests ...
Biofertilizantes como reatores em grânulo: sistemas carreadores com Aspergillus niger e Trichoderma asperelloides para ações no controle biológico, promoção do crescimento de plantas e solubilização de fósforo
(Universidade Federal de São Carlos, 2021-10-14)
In recent years, the importance of microorganisms role in maintaining agricultural productivity has been highlighted, being essential in cycling nutrients and production of metabolites to contribute to plant growth and ...
Comparação da eletroxidação de compostos orgânicos usando eletrodos plano e tela considerando a área eletroativa e a transferência de massa
(Universidade Federal de São Carlos, 2022-02-22)
Toxic organic compounds present in industrial effluents have their concentration limits for disposal determined by increasingly strict environmental and sanitary laws, as they can cause serious problems to the environment ...
Estudo de MOFs zeolíticas de imidazolato com Zn(II) e Co(II) e emprego na condensação de Knoevenagel
(Universidade Federal de São Carlos, 2021-05-26)
A new segment of porous materials has emerged last years: metal organic frameworks (MOFs). Zeolitic imidazolate frameworks (ZIFs), a subclass of MOFs, are formed by metallic cations and imidazolates presenting similar ...
Catalisadores de Au/ZrO2 e Au/In2O3/ZrO2: Efeito das propriedades eletrônicas e estruturais na atividade para desidrogenação do etanol e hidrogenação de CO2
(Universidade Federal de São Carlos, 2022-10-28)
Au/ZrO2 and Au/In2O3/ZrO2 catalysts were developed for CO2 hydrogenation reaction and Au/ZrO2 for ethanol dehydrogenation. The monometallic gold catalysts supported on ZrO2 with different contents (0.3 to 5.0%w/w) were ...
Estudo do processo integrado de fermentação alcoólica extrativa com CO2 com desidratação por adsorção e recuperação por absorção
(Universidade Federal de São Carlos, 2022-06-30)
To minimize the effects of ethanol inhibition, increase productivity, and reduce energy and environmental footprint, different strategies of ethanol removal by gas stripping with CO2 during alcoholic fermentation have been ...
Influência da costura na performance de meios filtrantes aplicados em filtro de mangas
(Universidade Federal de São Carlos, 2022-08-30)
There is a variety of filter bags available in the market for cleaning gases, composed of different materials, of various sizes, with several surface treatments, high efficiency, and different finishes, which enables the ...
Formação do carbonato de glicerol por transesterificação catalítica heterogênea
(Universidade Federal de São Carlos, 2022-04-29)
The industrial production of biodiesel has generated large amounts of glycerol, transforming this co-product into raw material for other processes. Notably, glycerol carbonate has emerged as a promising substance for the ...
Produção de coquetel enzimático rico em endoglucanase termoestável em biorreator de leito empacotado e sua aplicação na obtenção de nanocelulose
(Universidade Federal de São Carlos, 2021-10-21)
Nanocellulose is a bioproduct with high added value obtained through the conversion of lignocellulosic biomass. Due to characteristics such as high aspect ratio, low toxicity, thermal stability and high crystallinity, ...