A comprehensive model of simultaneous denitrification and methanogenic fermentation processes
Article first published online: 15 JUN 2009
Copyright © 2009 Wiley Periodicals, Inc.
Biotechnology and Bioengineering
Volume 105, Issue 1, pages 98–108, 1 January 2010
How to Cite
Tugtas, A. E., Tezel, U. and Pavlostathis, S. G. (2010), A comprehensive model of simultaneous denitrification and methanogenic fermentation processes. Biotechnol. Bioeng., 105: 98–108. doi: 10.1002/bit.22443
- Issue published online: 19 NOV 2009
- Article first published online: 15 JUN 2009
- Accepted manuscript online: 15 JUN 2009 12:00AM EST
- Manuscript Accepted: 8 JUN 2009
- Manuscript Revised: 2 JUN 2009
- Manuscript Received: 22 MAR 2009
- mathematical model;
The denitrification process was incorporated into the IWA Anaerobic Digestion Model No. 1 (ADM1) in order to account for the effect of denitrification on the methanogenic fermentation process. The model was calibrated and optimized using previously published experimental data and kinetic parameter values obtained with a mixed, mesophilic (35°C) methanogenic culture. Model simulations were used to predict the effect of nitrate reduction on the methanogenic fermentation process in batch, semi-continuous, and continuous flow reactors experiencing operational changes and/or system disturbances. The extended model clearly revealed the importance of substrate competition between denitrifiers and non-denitrifiers as well as the impact of N-oxide inhibition on process interactions between fermentation, methanogenesis, and denitrification. Biotechnol. Bioeng. 2010;105: 98–108. © 2009 Wiley Periodicals, Inc.