Title :
Mathematical modeling and parameters estimation of anaerobic fermentation processes
Author_Institution :
Res. Group “Math. Modeling & Comput. Sci.”, Inst. of Microbiol., Sofia, Bulgaria
fDate :
Aug. 31 1999-Sept. 3 1999
Abstract :
In the paper some problems of the mathematical modeling of anaerobic (methane) fermentation of animal waste in stirred tank bioreactors are considered. Laboratory experiments are carried out with highly concentrated organic pollutants and transient step responses of the control output for continuous methane fermentation are obtained. The dynamic behavior of this process is described by sets of deterministic nonlinear differential equations from 2nd order with different structures. Static characteristics are obtained with these models analytically. Investigations by computer simulation of the methane fermentation are performed with the aim to chose appropriate models for automatic control system design of this process.
Keywords :
bioreactors; control system synthesis; fermentation; nonlinear differential equations; parameter estimation; transient response; anaerobic methane fermentation processes; animal waste fermentation; automatic control system design; continuous methane fermentation; deterministic nonlinear differential equations; highly concentrated organic pollutants; mathematical modeling; parameter estimation; stirred tank bioreactors; transient step responses; Biological system modeling; Computational modeling; Data models; Kinetic theory; Mathematical model; Process control; Production; μ — specific growth-rate of the methane producing bacteria (1/day); D — dilution rate (1/day); Q — biogas flow rate (liter biogas for liter of the medium per day); S — concentration of the soluble organic (mg/l); S0i — influent organic pollutant concentration [g/l]; X — biomass concentration (mg/l); k1; k2 — yield coefficients;
Conference_Titel :
Control Conference (ECC), 1999 European
Conference_Location :
Karlsruhe
Print_ISBN :
978-3-9524173-5-5
