ISSN:
0006-3592
Keywords:
acetic acid fermentation
;
liquid-gas equilibrium
;
evaporation losses
;
mathematical model
;
open fermentation system
;
semiclosed fermentation system
;
closed fermentation system
;
laboratory scale
;
pilot plant scale
;
industrial plant scale
;
Chemistry
;
Biochemistry and Biotechnology
Source:
Wiley InterScience Backfile Collection 1832-2000
Topics:
Biology
,
Process Engineering, Biotechnology, Nutrition Technology
Notes:
An experimental study was conducted to propose an adequate mathematical model for liquid-gas equilibrium in acetic acid fermentations. Three operation scales (laboratory, pilot plant, and industrial plant) were employed to obtain the sets of experimental data. The proposed model, based in the UNIFAC method for the estimation of activity coefficients of a solution consisting of several components, takes into account the effect of temperature. However, in the set of equations, it has been necessary to put in the degree of equilibrium (∊). This coefficient adequately reflects the physical conditions of fermentation equipment. The experimental and numerical results help to define the fundamental mechanisms for liquid-gas equilibrium in these systems and demonstrate the model validity in the three tested scales. It was also found that in an industrial setting, closed systems are those with lowest evaporation losses. © 1998 John Wiley & Sons, Inc. Biotechnol Bioeng 59:310-317, 1998.
Additional Material:
12 Ill.
Type of Medium:
Electronic Resource
