Journal
JOURNAL OF PROCESS CONTROL
Volume 22, Issue 6, Pages 1008-1019Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.jprocont.2012.04.012
Keywords
Anaerobic digestion; Biotechnology; Steady state analysis; Equilibrium; Model approximation; Risk analysis
Funding
- AiresSud [7015]
- Coadvise [230833]
- Treasure
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This paper deals with the equilibria and stability analysis of the two step anaerobic model initially proposed by [12] to describe the dynamical behavior of an anaerobic fixed-bed wastewater treatment process. In a first part, the model is analyzed: its equilibria and their stability are established considering qualitative properties of the kinetics. In a second part, it is shown that the overloading tolerance (denoted herein OT), a parameter proposed in [9] to monitor anaerobic processes on-line, may not be suitable for monitoring the system and even causes serious problems under certain functioning conditions. Based on the analysis results established in the first part, a modified OT is proposed and evaluated in simulation. (C) 2012 Elsevier Ltd. All rights reserved.
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