Best Operating Conditions for Biogas Production in Some Simple Anaerobic Digestion Models
Author:
Open Access
Abstract
We consider one-step and two-step simple models of anaerobic digestion that are able to adequately capture the main dynamical behaviour of the full anaerobic digestion model ADM1. We do not consider specific growth functions. We only require them to satisfy certain qualitative assumptions. These assumptions are satisfied for concave growth functions, but they are also satisfied for a large class of growth functions found in many applications. We consider the maximisation of the biogas production with respect to the operating parameters of the model, which are the dilution rate and the substrate input concentration. We give the best operating conditions and we describe them as a subset of the set of operating parameters. Our models incorporate biomass decay terms, corresponding to maintenance. Numerical plots with specified growth functions and biological parameters illustrate the obtained results.Keywords
This publication has 62 references indexed in Scilit:
- An optimizing start-up strategy for a bio-methanatorBioprocess and Biosystems Engineering, 2011
- Model selection, identification and validation in anaerobic digestion: A reviewWater Research, 2011
- Maintenance affects the stability of a two-tiered microbial ‘food chain’?Journal of Theoretical Biology, 2011
- A mathematical study of a syntrophic relationship of a model of anaerobic digestion processMathematical Biosciences and Engineering, 2010
- Dynamical model development and parameter identification for an anaerobic wastewater treatment processBiotechnology and Bioengineering, 2001
- Adaptive control of anaerobic digestion processes—a pilot‐scale applicationBiotechnology and Bioengineering, 1988
- Adaptive identification and control algorithms for nonlinear bacterial growth systemsAutomatica, 1984
- The dynamics of commensalismBiotechnology and Bioengineering, 1981
- Stability of commensalistic systemsBiotechnology and Bioengineering, 1974
- The Continuous Culture of Bacteria; a Theoretical and Experimental StudyJournal of General Microbiology, 1956