Details
| Original language | English |
|---|---|
| Pages (from-to) | 535-549 |
| Number of pages | 15 |
| Journal | Nonlinear dynamics |
| Volume | 73 |
| Issue number | 1-2 |
| Publication status | Published - Jul 2013 |
| Externally published | Yes |
Abstract
The steady-state behavior of the Anaerobic Digestion Model No. 1 (ADM1) with respect to dilution rate and substrate concentration is analyzed in this study. Thereby, up to ten coexisting steady-state solutions are observed under the same operating conditions. The parameter region of a methane producing operation is limited regarding high dilution rates as well as low or high substrate concentrations. The underlying mechanisms causing those limits are investigated in detail, and the common core is identified, namely a positive feedback loop between growth of acetate degraders and acetate itself. The difference lies in the activation mechanisms of this feedback loop, which differs in the three investigated cases. The comparison of the present results with literature studies of simpler two-step models reveals qualitative differences regarding the substrate concentration. Therefore, an alternative simplified model is suggested, which shows qualitatively the same bifurcation behavior as the ADM1 considering variation of the substrate concentration.
Keywords
- ADM1, Anaerobic digestion, Bifurcation, Biogas production, Steady-state multiplicity
ASJC Scopus subject areas
- Engineering(all)
- Control and Systems Engineering
- Engineering(all)
- Aerospace Engineering
- Engineering(all)
- Ocean Engineering
- Engineering(all)
- Mechanical Engineering
- Mathematics(all)
- Applied Mathematics
- Engineering(all)
- Electrical and Electronic Engineering
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In: Nonlinear dynamics, Vol. 73, No. 1-2, 07.2013, p. 535-549.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Steady-state analysis of the Anaerobic Digestion Model No. 1 (ADM1)
AU - Bornhöft, Astrid
AU - Hanke-Rauschenbach, Richard
AU - Sundmacher, Kai
N1 - Funding information: This work was funded by the Federal State of Saxony-Anhalt under the grant Green-FC (6003398800).
PY - 2013/7
Y1 - 2013/7
N2 - The steady-state behavior of the Anaerobic Digestion Model No. 1 (ADM1) with respect to dilution rate and substrate concentration is analyzed in this study. Thereby, up to ten coexisting steady-state solutions are observed under the same operating conditions. The parameter region of a methane producing operation is limited regarding high dilution rates as well as low or high substrate concentrations. The underlying mechanisms causing those limits are investigated in detail, and the common core is identified, namely a positive feedback loop between growth of acetate degraders and acetate itself. The difference lies in the activation mechanisms of this feedback loop, which differs in the three investigated cases. The comparison of the present results with literature studies of simpler two-step models reveals qualitative differences regarding the substrate concentration. Therefore, an alternative simplified model is suggested, which shows qualitatively the same bifurcation behavior as the ADM1 considering variation of the substrate concentration.
AB - The steady-state behavior of the Anaerobic Digestion Model No. 1 (ADM1) with respect to dilution rate and substrate concentration is analyzed in this study. Thereby, up to ten coexisting steady-state solutions are observed under the same operating conditions. The parameter region of a methane producing operation is limited regarding high dilution rates as well as low or high substrate concentrations. The underlying mechanisms causing those limits are investigated in detail, and the common core is identified, namely a positive feedback loop between growth of acetate degraders and acetate itself. The difference lies in the activation mechanisms of this feedback loop, which differs in the three investigated cases. The comparison of the present results with literature studies of simpler two-step models reveals qualitative differences regarding the substrate concentration. Therefore, an alternative simplified model is suggested, which shows qualitatively the same bifurcation behavior as the ADM1 considering variation of the substrate concentration.
KW - ADM1
KW - Anaerobic digestion
KW - Bifurcation
KW - Biogas production
KW - Steady-state multiplicity
KW - ADM1
KW - Anaerobic digestion
KW - Bifurcation
KW - Biogas production
KW - Steady-state multiplicity
UR - http://www.scopus.com/inward/record.url?scp=84879783541&partnerID=8YFLogxK
U2 - 10.1007/s11071-013-0807-x
DO - 10.1007/s11071-013-0807-x
M3 - Article
AN - SCOPUS:84879783541
VL - 73
SP - 535
EP - 549
JO - Nonlinear dynamics
JF - Nonlinear dynamics
SN - 0924-090X
IS - 1-2
ER -