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Butler-Volmer-Monod model for describing bio-anode polarization curves |
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| Authors: | Hubertus V.M. Hamelers,Annemiek ter Heijne,Nienke Stein,René A. RozendalCees J.N. Buisman |
| Affiliation: | a Sub-Department of Environmental Technology, Wageningen University, Bomenweg 2, P.O. Box 8129, 6700 EV Wageningen, The Netherlands b Wetsus, Centre of Excellence for Sustainable Water Technology, Agora 1, P.O. Box 1113, 8900 CC Leeuwarden, The Netherlands c Advanced Water Management Centre, The University of Queensland, St. Lucia, QLD 4072, Australia |
| Abstract: | A kinetic model of the bio-anode was developed based on a simple representation of the underlying biochemical conversions as described by enzyme kinetics, and electron transfer reactions as described by the Butler-Volmer electron transfer kinetics. This Butler-Volmer-Monod model was well able to describe the measured bio-anode polarization curves. The Butler-Volmer-Monod model was compared to the Nernst-Monod model described the experimental data significantly better. The Butler-Volmer-Monod model has the Nernst-Monod model as its full electrochemically reversible limit. Contrary to the Nernst-Monod model, the Butler-Volmer-Monod model predicts zero current at equilibrium potential. Besides, the Butler-Volmer-Monod model predicts that the apparent Monod constant is dependent on anode potential, which was supported by experimental results. |
| Keywords: | Bioelectrochemical system Microbial Fuel Cell Anode Butler-Volmer Monod |
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