## 3 Results
### Overview of Classified Models
\begin{table}
\begin{tabular}{c c c c c c c c} \hline \hline
**Ref.** & \begin{tabular}{c} **View on** \\ **Biogas Plants** \\ \end{tabular} & **AD Model** & **Coding/Software** & **Feedstock** & \
\begin{tabular}{c} **Energy** \\ **Production** \\ \end{tabular} & **Region** &
\begin{tabular}{c} **Additional** \\ **Models** \\ \end{tabular} \\ \hline
[82] & AD process & ADM1 & MATLAB\({}^{\cancel{B}}\)-code & - & - & - & - \\ \hline
[90] & AD process & ADM1 & BioOptim [9] & bio waste & - & - & - \\ \hline
[8] & AD process & \begin{tabular}{c} modified \\ ADM1 \\ \end{tabular} & \
\begin{tabular}{c} MATLAB\({}^{\cancel{B}}\) \\ Simulink \\ \end{tabular} &
\begin{tabular}{c} pig manure \& \\ glycerin \\ \end{tabular} & - & - & - \\ \hline
[95] & AD process & \
\begin{tabular}{c} 2 species, \\ 2 reactions \\ \end{tabular} &
\begin{tabular}{c} MATLAB\({}^{\cancel{B}}\) \\ Simulink \\ \end{tabular} & maize silage & - & - & - \\ \hline
[103] & AD process & 1 reaction & not known & manure & - & - & - \\ \hline
[105] & AD process & \
\begin{tabular}{c} 13 species, \\ 10 reactions \\ \end{tabular} & MATLAB\({}^{\cancel{B}}\) &
\begin{tabular}{c} fictive waste \\ composition \\ \end{tabular} & - & - & - \\ \hline
[109] & AD process & \
\begin{tabular}{c} ANN: \\ one specific \\ digester \\ \end{tabular} & MATLAB\({}^{\cancel{B}}\) &
\begin{tabular}{c} agricultural \\ waste \\ (landfill) \\ \end{tabular} & - & - & - \\ \hline
[110] & AD process & \
\begin{tabular}{c} ANN: \\ 25 digesers \\ \end{tabular} & NeuroSolutions\({}^{\cancel{B}}\) &
\begin{tabular}{c} manure, \\ banana stem, \\ sawdust \\ \end{tabular} & - & - & - \\ \hline
[111] & AD process & \begin{tabular}{c} ANN of \\ ADM1 \\ \end{tabular} & \
\begin{tabular}{c} MATLAB\({}^{\cancel{B}}\): \\ ADM1 and \\ Python: ANN \\ \end{tabular} &
\begin{tabular}{c} fictive \\ (result of \\ ADM1) \\ \end{tabular} & - & - & - \\ \hline
[84] & \begin{tabular}{c} energy \\ production \\ \end{tabular} & ADM1 & \begin{tabular}{c} MATLAB\({}^{\cancel{B}}\) \\ Simulink \\ \end{tabular} & manure & \
\begin{tabular}{c} electricity \\ (micro gas \\ turbine) \\ \end{tabular} & - &
\begin{tabular}{c} power \\ electronics of \\ micro \\ gas turbine \\ \end{tabular} \\ \hline
[86] & \begin{tabular}{c} energy \\ production \\ \end{tabular} & ADM1 & \begin{tabular}{c} MATLAB\({}^{\cancel{B}}\) \\ Simulink \\ \end{tabular} & Multiple & \
\begin{tabular}{c} electricity \\ (CHP) \\ \end{tabular} &
\begin{tabular}{c} thermodynamics \\ of digester \\ \end{tabular} \\ \hline
[101] & \begin{tabular}{c} energy \\ production \\ \end{tabular} & \begin{tabular}{c} 4 species, \\ 4 reactions \\ \end{tabular} & \begin{tabular}{c} MATLAB\({}^{\cancel{B}}\) \\ Simulink \\ \end{tabular} & manure & \
\begin{tabular}{c} electricity \\ (micro gas \\ turbine) \\ \end{tabular} & - &
\begin{tabular}{c} synchronous \\ electrical \\ generator of \\ micro gas \\ turbine, gas \\ storage, thermodynamics \\ of digester \\ \end{tabular} \\ \hline
[104] & \begin{tabular}{c} energy \\ production \\ \end{tabular} & \begin{tabular}{c} 1 reaction \\ \end{tabular} & \begin{tabular}{c} MATLAB\({}^{\cancel{B}}\) \\ Simulink \\ \end{tabular} & \begin{tabular}{c} household \\ garbage \\ \end{tabular} & \begin{tabular}{c} electricity \\ (CHP), \\ heat \\ \end{tabular} & \
\begin{tabular}{c} domestic \\ use \\ profile (China) \\ \end{tabular} &
\begin{tabular}{c} heat storage \\ (water tank), \\ electrical gas \\ compressor, \\ gas storage, \\ battery (buffer) \\ \end{tabular} \\ \hline
[99] & \begin{tabular}{c} energy \\ production \\ \end{tabular} & \begin{tabular}{c} 1 time- \\ dependent \\ function \\ \end{tabular} & \
\begin{tabular}{c} MATLAB\({}^{\cancel{B}}\) \\ Simulink \\ \end{tabular} & manure &
\begin{tabular}{c} electricity \\ (CHP) \\ \end{tabular} & - & gas storage \\ \hline
[10] & \begin{tabular}{c} biogas control \\ \end{tabular} & ADM1 & \begin{tabular}{c} BioOptim: \\ MATLAB\({}^{\cancel{B}}\) \\ Simulink \\ \end{tabular} & - & \
\begin{tabular}{c} electricity \\ (CHP) \\ \end{tabular} & - &
\begin{tabular}{c} digestate \\ pumps, heating \\ system, \\ energy sinks \\ and sources \\ \end{tabular} \\ \hline \hline \end{tabular}
\end{table}