TY  - JOUR
A1  - Körber, Matthias
A1  - Weinrich, Sören
A1  - Span, Roland
A1  - Gerber, Mandy
T1  - Demand-oriented biogas production to cover residual load of an electricity self-sufficient community using a simple kinetic model
JF  - Bioresource Technology
N2  - Flexible biogas production can enable demand-oriented energy supply without the need for expensive gas storage expansions, but poses challenges to the stability of the anaerobic digestion (AD) process. In this work, biogas production of laboratory-scale AD of maize silage and sugar beets was optimized to cover the residual load of an electricity self-sufficient community using a simple process model based on first-order kinetics. Experiments show a good agreement between biogas demand, predicted, and measured biogas production. By optimizing biogas conversion schedules based on the measured gas production, a gas storage capacity of 7-8 h was identified for maximum flexibility, which corresponds to typical gas storage sizes at industrial biogas plants in Germany. Various stability indicators were continuously monitored and proved resilient process conditions. These results demonstrate that demand-oriented biogas production using model predictive control is a promising approach to enable existing biogas plants to provide balancing energy.
Y1  - 2022
U6  - http://dx.doi.org/10.1016/j.biortech.2022.127664
SN  - 0960-8524
VL  - 361
ER  -