Title:
Mathematical Modeling of Process Liquor Flow and Acetoclastic Methanogenesis under Mesophilic Conditions in a Two-Stage Biogas Reactor - Optimal Retention Time depending on Acetate Concentration
Author(s):
Muha, I., Schneider, J., Wittum, G.
Document(s):
Paper
Abstract:
In [11] a general model for biogas plants was developed. The model couples the ADM1, modeling the anaerobic digestion processes, with a two-phase model for seepage flow, modeling the process liquor flow within the reactor. In this approach the biogas reactor is spatially resolved within the mathematical model and, therefore, the spatial variations of all considered quantities can be computed. This aim of this work is to investigate the newly introduced inhibition factor from [11]. This factor is introduced in order to account for the limited number of plastic tower packing within the reactor. It decreases uptake and growth of microorganisms if the plastic tower packing is being overpopulated. With the new inhibition factor an optimal total mass of microorganisms can be computed. By comparing the total steady state mass of microorganisms with the obtained optimal value an optimal retention time depending on acetate concentration within the inflowing process liquor can be derived.
Keywords:
anaerobic digestion, biogas, modelling, modeling
Topic:
R&D on Biomass Conversion Technologies for Heating, Electricity and Chemicals
Subtopic:
Anaerobic digestion for biogas production
Event:
21st European Biomass Conference and Exhibition
Session:
2DO.4.2
Pages:
696 - 700
ISBN:
978-88-89407-53-0
Paper DOI:
10.5071/21stEUBCE2013-2DO.4.2
Price:
FREE
