Airlift Bioreactor
Mostrando 1-7 de 7 artigos, teses e dissertações.
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1. Estudos preliminares de produção de ácido glucônico a partir de sacarose invertida em biorreator airlift
The use of sucrose for the production of industrial inputs with higher added value has a great industrial interest, especially glucose and fructose which present many advantages over sucrose in industrial processes. Gluconic acid and its derived salts can be mentioned as second generation products also having wide industrial applicability. This study aimed t
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 22/12/2011
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2. Avaliação de parâmetros de desempenho de três modelos de biorreatores pneumáticos de bancada
Due to the large number of functional advantages, pneumatic bioreactors have drawn attention in the biotechnology field, being more promising than stirred and aerated tank bioreactors. Parameters such as global gas hold-up (G), volumetric oxygen transfer coefficient (kLa) and average shear rate (Ym) must be considered as performance criteria of these
Publicado em: 2010
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3. Produção de celulases e xilanases por Penicillium echinulatum em processo submerso utilizando biorreatores com agitação mecânica e airlift de circulação interna
Cellulolytic enzymes have many uses, particularly in the food, textile, and paper industries. However, their major potential use is in the hydrolysis of cellulose a component of lignocellulosic residues for ethanol fuel production. Among the cellulase-producing microorganisms, mutants of the Trichoderma genus are the most studied and most widely used in the
Publicado em: 2009
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4. Hidrodinâmica e transferência de oxigênio em três biorreatores Airlift de circulação interna geometricamente semelhantes
Internal-loop airlift reactors (ALR) are a special class of pneumatic reactors. The use of this type of reactor has been attractive for chemical and biological reactions because of their simple construction without moving parts and low energy costs when compared with stirred tank reactors. In the present work, a study related to hydrodynamic and oxygen trans
Publicado em: 2009
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5. Production, purification and characterization of lipase from Geotricum candidum obtained using industrial mediums. / Produção, purificação e caracterização da lipase de Geotrichum candidum obtida a partir de meios industriais.
Lipases are most commonly found in nature, they can be obtained from animals, vegetables and microorganisms and it can be used on different industries. The industrial lipase production increased considerably in past few years, such as they have innumerous application on different industrial processing. Nowadays, lipases studies analyzed some steps of product
Publicado em: 2006
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6. The effects of geometry and operational conditions on gas holdup, liquid circulation and mass transfer in an airlift reactor
In airlift reactors transport phenomena are achieved by pneumatic agitation and circulation occurs in a defined cyclic pattern through a loop. In the present work, the effect of geometrical relations on gas holdup and liquid velocity, and consequently on the gas-liquid mass transfer coefficient, was studied in a 6-liter airlift bioreactor with A D/A R = 0.63
Brazilian Journal of Chemical Engineering. Publicado em: 2003-10
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7. A Gas Lift Bioreactor for Removal of Contaminants from the Vapor Phase
The cometabolic degradation of trichloroethylene (TCE) as a vapor by two aromatic-metabolizing pseudomonads was evaluated in an airlift reactor. These microorganisms were able to degrade 90 to 95% of TCE in air at concentrations at the reactor inlet of 300 to 4,000 μg/liter. Although exposure of the cells to high inlet concentrations of TCE (4 mg/liter) cau