Journal article
Sensitivity analysis of autotrophic N removal by a granule based bioreactor: Influence of mass transfer versus microbial kinetics
Department of Chemical and Biochemical Engineering, Technical University of Denmark1
Computer Aided Process Engineering Center, Department of Chemical and Biochemical Engineering, Technical University of Denmark2
Center for Process Engineering and Technology, Department of Chemical and Biochemical Engineering, Technical University of Denmark3
Department of Environmental Engineering, Technical University of Denmark4
Environmental Chemistry, Department of Environmental Engineering, Technical University of Denmark5
A comprehensive and global sensitivity analysis was conducted under a range of operating conditions. The relative importance of mass transfer resistance versus kinetic parameters was studied and found to depend on the operating regime as follows: Operating under the optimal loading ratio of 1.90 (gO2/m3/d)/(gN/m3/d), the system was influenced by mass transfer (10% impact on nitrogen removal) and performance was limited by AOB activity (75% impact on nitrogen removal), while operating above, AnAOB activity was limiting (68% impact on nitrogen removal).
The negative effect of oxygen mass transfer had an impact of 15% on nitrogen removal. Summarizing such quantitative analyses led to formulation of an optimal operation window, which serves a valuable tool for diagnosis of performance problems and identification of optimal solutions in nitritation/anammox applications.
| Language: | English |
|---|---|
| Year: | 2012 |
| Pages: | 230-241 |
| ISSN: | 18732976 and 09608524 |
| Types: | Journal article |
| DOI: | 10.1016/j.biortech.2012.07.087 |
| ORCIDs: | Gernaey, Krist , Smets, Barth F. and Sin, Gürkan |
