Simple modelling approach using Modelica for microbial electrosynthesis
Peer reviewed, Journal article
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Original versionSamarakoon, G., Winkler, D., Sivalingam, V., Dinamarca, C., & Bakke, R. (2021). Simple modelling approach using Modelica for microbial electrosynthesis. In Proceedings of The 61st SIMS Conference on Simulation and Modelling SIMS - Linköping Electronic Conference Proceedings, 176(43). https://doi.org/10.3384/ecp20176306
This study intends to develop a simple mathematical model that contributes to the integration of Microbial Electrosynthesis (MES) in AD to reduce CO2 to CH4. Open-source modelling language Modelica was used to build the model. The MES internal resistances are important parameters for the model and an Electrochemical Impedance Spectroscopy (EIS) experiment was employed to estimate the resistances and distinguish the contribution from each resistance element. The model preliminary simulations show that it is possible to determine the voltage required to keep the potential difference across the cathode biofilm within optimal conditions. The system is sensitive to effects of biofilm development on electron transfer at both electrodes, which implies effects on the electrons from anode to cathode (i.e. electric current). The model will be a useful tool for extrapolating experimental results and to enhance our understanding of MES.