A mathematical investigation for the simulation and forecasting of a biodigester operations

Chiara Curletto, Lorenza Bulla, Loris Canovi, Fiorenza Demicheli and Ezio Venturino

Mathematics and Computers in Simulation (MATCOM), 2023, vol. 209, issue C, 118-152

Abstract: In this paper we formulate various mathematical models to describe the processes of anaerobic digestion of an organic waste treatment plant, based on its chemical kinetics, stoichiometry and on the biological aspects that influence the chemical reactions of anaerobic digestion. The latter is a process of degradation of the organic substance by microorganisms in the absence of oxygen, used in plants that have the purpose of producing biomethane and compost. This type of process is very complex and for its realization different chemical phases are involved as well as the presence of different bacterial families. The chemical reaction reagent represents the digester substrate; the products are biogas (methane and carbon dioxide) and digestate (degraded organic substances, from which compost is obtained). The populations modeled here are the reactants of chemical reactions and their products, as well as microorganisms. The latter play an important role as they carry the reactions inside the anaerobic reactor in which they live.

Keywords: Bioreactor modeling; Organic waste treatment; Dynamical systems; Chemostat (search for similar items in EconPapers)
Date: 2023
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Persistent link: https://EconPapers.repec.org/RePEc:eee:matcom:v:209:y:2023:i:c:p:118-152

DOI: 10.1016/j.matcom.2023.02.002

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