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Comportamento do desgaste e posterior corrosão do sistema duplex AISI 4140 nitretado/CrN em bioetanol combustível
(2014-06-24)
This work shows a study of the tribological and corrosive behaviour of AISI
4140 steel previously quenched and tempered, plasma nitrided and then coated with
CrN thin film, in contact with hydrated ethanol fuel. The ...
Capim-elefante pré-tratado por explosão a vapor como matéria-prima para produção de enzimas, hidrólise enzimática e fermentação alcoólica
(2015-06-02)
With the growing demand for sources of renewable energy as alternatives to petroleum, the use of lignocellulosic biomasses, such as Pennisetum purpureum (elephant grass), may provide a viable alternative to second generation ...
Preparação e caracterização de membranas cerâmicas compostas tubulares para aplicação na separação de gases
(2015-02-23)
Within this context, this work aims to prepare membranes composed of α-alumina coated with palladium using the electroless plating technique associated with the sol-gel method. To achieve the objectives of the paper, ...
Isolamento e identificação de microrganismos produtores de hidrogênio a partir do glicerol residual
(2015-02-12)
One of the major challenges for the coming years is to develop alternative forms of production for sustainable energy. The biodiesel is positioning itself as an option for the replacement of fossil fuels. Its production ...
Produção de celulases e xilanases pelo fungo Penicillium echinulatum empregando resíduos da extração de lipídios de nabo forrageiro
(2015-02-23)
The lignocellulosic biomass can be considered as an inexhaustible source of raw material of low cost for the production of biofuels, which are alternatives to fossil fuels. However, the availability of efficient and low ...
Avaliação da corrosão no aço AISI 4140 nitrocarbonetado e pós-oxidado a plasma em etanol hidratado combustível
(2014-06-24)
Environmental and energy sustainability issues have promoted the search for biofuels
produced from renewable sources, such as ethanol obtained from sugarcane processing.
However, this new generation of biofuels can cause ...
Emprego do glicerol como fonte de carbono na produção fermentativa de 2,3-Butanodiol por Enterobacter aerogenes ATCC 13048
(2015-02-24)
In this work, the use of glycerol as carbon source for cell growth and 2,3-butanediol/acetoin production in the in cultivation of Enterobacter aerogenes ATTT 13048 was studied. The influence of initial substrate concentration ...
Produção de 2,3-Butanodiol a partir de glicerol por klebsiella oxytoca ATCC 8724
(2015-02-24)
Glycerol is a by-product of biodiesel production, which accounts for approximately 10% of the biofuel. Since a large volume of it is formed in industry, glycerol could be used as a substrate to obtain other compounds, such ...
Conversão termoquímica de Bagaço de Semente de Nabo Forrageiro (BSNF) em um reator rotativo
(2017-01-30)
The fodder radish has extensive use in agriculture and the oil from its seed is an important feedstock in biodiesel production. However, the extraction of the oil from the seed by pressing generates a residue (fodder radish ...