Analysis and application of ADM1 for anaerobic methane production |
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Authors: | Hyeong-Seok Jeong Chang-Won Suh Jae-Lim Lim Sang-Hyung Lee Hang-Sik Shin |
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Institution: | (1) Department of Civil and Environmental Engineering, Korea Advanced Institute of Science, Daejeon, Republic of Korea;(2) Korea Institute of Water and Environment (KIWE), Korea Water Resources Corporation, 462-1 Jeonmin-dong, Yuseoung-gu, Daejeon, 305-730, Republic of Korea |
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Abstract: | An anaerobic model for the serum bottle test was developed and analyzed with sensitivities of stoichiometric and kinetic parameters
to the components in order to establish a basis for appropriate application of the model. Anaerobic glucose degradation in
a serum bottle was selected as an example. The anaerobic model was developed based on the anaerobic digestion model no. 1
(ADM1), which had five processes with 17 kinetic and stoichiometric parameters. Sensitivity analysis showed that the yield
of product on the substrate (f) has high sensitivities to model components, and that the methane concentration was the most sensitive component. Important
parameters including yield of product on the substrate (f), yield of biomass on the substrate (Y), and half-saturation values (K) were estimated using genetic algorithms, which optimized the parameters with experimental results. The Monod maximum specific
uptake rate (k) was, however, so strongly associated with the concentration of biomass, that values could not be estimated individually.
Simulation with estimated parameters showed good agreement with experimental results in the case of methane production. However,
there were some differences in acetate and propionate concentrations. |
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Keywords: | ADM1 Sensitivity analysis Genetic algorithms Parameter estimation |
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