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Stoichiometry of sulfite oxidation by oxygen during the determination of the volumetric mass transfer coefficient
(American Chemical Society, 2008-12)
The aim of this work was to study the effect of the initial sulfite concentration on the stoichiometric coefficient of sulfite oxidation. A combined method based on the oxidation of sulfite by oxygen in the presence of ...
Automated algorithm to determine k(L)a considering system delay
(Wiley-Blackwell, 2017-07-01)
BACKGROUNDQuantification of the volumetric oxygen transfer coefficient (k(L)a) is essential to characterize and optimize the oxygen transfer capacity of bioreactors. First order methodologies are commonly used to estimate ...
Oxygen mass transfer studies on batch cultivation of P. aeruginosa in a biocalorimeter
(Pontificia Universidad Católica de Valparaíso, 2008)
Estimation of the volumetric oxygen tranfer coefficient (KLa) from the gas balance and using a neural network technique
(Brazilian Society of Chemical Engineering, 1999-06-01)
This paper reports on the use of the gas balance and dynamic methods to obtain an estimate of the volumetric oxygen transfer coefficient (kLa) in a conventional reactor during the growth phase of the microorganism ...
Estimation of the volumetric oxygen tranfer coefficient (KLa) from the gas balance and using a neural network technique
(Brazilian Society of Chemical Engineering, 1999-06-01)
This paper reports on the use of the gas balance and dynamic methods to obtain an estimate of the volumetric oxygen transfer coefficient (kLa) in a conventional reactor during the growth phase of the microorganism ...
Fermentation medium and oxygen transfer conditions that maximize the xylose conversion to ethanol by Pichia stipitis
(PERGAMON-ELSEVIER SCIENCE LTDOXFORD, 2012)
The xylose conversion to ethanol by Pichia stipitis was studied. In a first step, the necessity of supplementing the fermentation medium with urea. MgSO(4) x 7H(2)O, and/or yeast extract was evaluated through a 2(3) full ...
Avaliação de parâmetros globais de desempenho de biorreatores pneumáticos através de fluidodinâmica computacional
(Universidade Federal de São CarlosUFSCarPrograma de Pós-Graduação em Engenharia Química - PPGEQCâmpus São Carlos, 2015-03-25)
Pneumatic bioreactors are devices free of moving parts which have the purpose
of converting raw materials in bio-products of commercial interest by the action of enzymes
or cells. They are promising in the biochemical ...
Impact of oxygen supply on surfactin biosynthesis using brewery waste as substrate
(Elsevier, 2021-03-15)
This work reports surfactin production by B. subtilis ATCC 6051 in a stirred tank bioreactor, where trub was used as a carbon source. Trub is a residue from the brewing industry mainly composed of high-molar-mass proteins ...
Estimation of the volumetric oxygen tranfer coefficient (KLa) from the gas balance and using a neural network technique
(Brazilian Society of Chemical Engineering, 2014)
Profiles of xylose reductase, xylitol dehydrogenase and xylitol production under different oxygen transfer volumetric coefficient values
(JOHN WILEY & SONS LTD, 2009)
BACKGROUND: Xylitol is a sugar alcohol (polyalcohol) with many interesting properties for pharmaceutical and food products. It is currently produced by a chemical process, which has some disadvantages such as high energy ...