TY - JOUR
T1 - Sensitivity analysis of autotrophic N removal by a granule based bioreactor: Influence of mass transfer versus microbial kinetics
AU - Vangsgaard, Anna Katrine
AU - Mauricio Iglesias, Miguel
AU - Gernaey, Krist
AU - Smets, Barth F.
AU - Sin, Gürkan
PY - 2012
Y1 - 2012
N2 - 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.
AB - 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.
KW - Autotrophic nitrogen removal
KW - Anammox
KW - Granular sludge
KW - Uncertainty and sensitivity analysis
KW - Modeling
U2 - 10.1016/j.biortech.2012.07.087
DO - 10.1016/j.biortech.2012.07.087
M3 - Journal article
C2 - 22940324
SN - 0960-8524
VL - 123
SP - 230
EP - 241
JO - Bioresource Technology
JF - Bioresource Technology
ER -