title: Sensitivity analysis of autotrophic N removal by a granule based bioreactor: Influence of mass transfer versus microbial kinetics.
abstract: 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(gO(2)/m(3)/d)/(gN/m(3)/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.
authors.affiliation: Computer Aided Process Engineering Center (CAPEC), Department of Chemical and Biochemical Engineering, Technical University of Denmark, Building 229, Søltofts Plads, 2800 Lyngby, Denmark.
authors.forename: Anna Katrine
authors.initials: AK
authors.lastname: Vangsgaard
authors.forename: Miguel
authors.initials: M
authors.lastname: Mauricio-Iglesias
authors.forename: Krist V
authors.initials: KV
authors.lastname: Gernaey
authors.forename: Barth F
authors.initials: BF
authors.lastname: Smets
authors.forename: Gürkan
authors.initials: G
authors.lastname: Sin
mesh_terms: D052818:Autotrophic Processes / Q000187:drug effects; D001419:Bacteria / Q000187:drug effects / Q000378:metabolism*; D001673:Biodegradation, Environmental / Q000187:drug effects; D018441:Biofilms / Q000187:drug effects; D018533:Biomass; D019149:Bioreactors / Q000382:microbiology*; D003198:Computer Simulation; D007700:Kinetics; D016014:Linear Models; D009584:Nitrogen / Q000302:isolation & purification*; D010100:Oxygen / Q000494:pharmacology; D010316:Particle Size; D012722:Sewage / Q000382:microbiology; D012995:Solubility; D035501:Uncertainty
chemical_list: D012722:Sewage; D009584:Nitrogen; D010100:Oxygen