TY - JOUR

T1 - Sensitivity analysis of autotrophic N removal by a granule based bioreactor: Influence of mass transfer versus microbial kinetics

A1 - Vangsgaard,Anna Katrine

A1 - Mauricio Iglesias,Miguel

A1 - Gernaey,Krist

A1 - Smets,Barth F.

A1 - Sin,Gürkan

AU - Vangsgaard,Anna Katrine

AU - Mauricio Iglesias,Miguel

AU - Gernaey,Krist

AU - Smets,Barth F.

AU - Sin,Gürkan

PB - Elsevier BV

PY - 2012

Y1 - 2012

N2 - <p>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<br/> 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.</p>

AB - <p>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<br/> 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.</p>

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

JO - Bioresource Technology

JF - Bioresource Technology

SN - 0960-8524

VL - 123

SP - 230

EP - 241

ER -