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DOI : 10.17640/KSWST.2019.27.1.3 ,    Vol.27, No.1, 3 ~ 11, 2019
Title
Sensitivity Analysis of the Model Parameters for an Anaerobic Fluidized Bed Bioreactor
석종혁 Jong Hyuk Seok
Abstract
Sensitivity analysis for the model parameters determined from the experimental data of the propylene glycol biomethanization process was presented. The mathematical model developed was assumed as a completely mixed stirred tank reactor(CMSTR) and composed of 13 differential equations associated with 18 parameters. Basic model parameters determined from an initial experimental data set using one bioreactor were then verified with the results from a second bioreactor. Unknown parameters were then estimated in a sequential manner by means of an optimization technique. The computational effort can be significantly reduced by obtaining the most sensitive parameter combinations, where the eigenvector corresponding to the largest eigenvalue indicates the most sensitive direction. This parameter combination technique was successfully applied to the sensitivity analysis of the CMSTR model parameters and the results were verified using the novel technique developed for this purpose. The result indicates that parameters related to the propionate significantly influence the model behavior. In general, any decay coefficients are shown to be insignificant.
Key Words
Anaerobic Treatment, Fluidized bed bioreactor, Model parameters, Perturbation, Sensitivity analysis
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