Development and validation of a dynamic first order kinetics model of a periodically operated well-mixed vessel for anaerobic digestion

Patterns in the Course of Gas Production Rates in Anaerobic Digestion—Prediction of Gas Production Rates Based on Deconvolution and Linear Regression

“…The coefficient of determination was calculated to be 82.9% on average over 6 iterations. This value is in a similarly good range as the results of the model presented by Lafratta [3], which were in the range of 72 and 87% within 24 h or the results by Poggio [34] using the ADM1 simulating gas production from food and green wastes (74.0-93.3%). The deep learning models introduced by Jeong et al [11] achieved a coefficient of determination of 38 to 76%.…”

“…In anaerobic degradation, the individual process steps are usually linked by a chain of zero-, first-and second-order kinetics. An overview of developed deterministic models is given in [3,4]. With the Anaerobic Digestion Model 1 (ADM1) [5] a mature deterministic dynamic model is available, able to describe the anaerobic processes in detail, allowing predictions on biogas volumes and conclusions on process stability.…”

“…He reduced the model to 4 process steps that were only described with first-order kinetics [8]. Lafratta introduced a model which is based only on 3 sequential first-order reactions and reduced necessary analysis of the substrate to the parameter VS, VFA, and acetic acid concentration [3]. While there are other models which require a smaller amount of analytical work (e.g., [3,8,9]), still chemical analysis remains a limiting factor, especially taking into account the changing substrate characteristics.…”

“…Lafratta introduced a model which is based only on 3 sequential first-order reactions and reduced necessary analysis of the substrate to the parameter VS, VFA, and acetic acid concentration [3]. While there are other models which require a smaller amount of analytical work (e.g., [3,8,9]), still chemical analysis remains a limiting factor, especially taking into account the changing substrate characteristics. The implementation of the ADM1 with the intention of actively controlling the digester is currently unknown.…”

Kinetic Modelling of Anaerobic Co-Digestion of Sewage Sludge and Sherry-Wine Distillery Wastewater: Effect of Substrate Composition in Batch Bioreactor

“…In this sense, only few researchers have developed complex kinetic modelling of AD considering the relationship between enzymatic hydrolysis, acidogenesis, acetogenesis and methane production. Most of them included first-order kinetic and Monod-type equations to describe the degradation of different wastes, such as livestock manure [22,23], olive pomace [13], orange rind [24], organic fraction of municipal solid waste [25], microalgae [14], cow manure [26] and SS [27].…”