title: Kinetic models for nitrogen inhibition in ANAMMOX and nitrification process on deammonification system at room temperature.
abstract: In this study were fitted the best kinetic model for nitrogen removal inhibition by ammonium and/or nitrite in three different nitrogen removal systems operated at 25 °C: a nitrifying system (NF) containing only ammonia oxidizing bacteria (AOB), an ANAMMOX system (AMX) containing only ANAMMOX bacteria, and a deammonification system (DMX) containing both AOB and ANAMMOX bacteria. NF system showed inhibition by ammonium and was best described by Andrews model. The AMX system showed a strong inhibition by nitrite and Edwards model presented a best system representation. For DMX system, the increased substrate concentration (until 1060 mg NH3-N/L) tested was not limiting for the ammonia consumption rate and the Monod model was the best model to describe this process. The AOB and ANAMMOX sludges combined in the DMX system displayed a better activity, substrate affinity and excellent substrate tolerance than in nitrifying and ANAMMOX process.
authors.affiliation: Department of Chemical Engineering, Federal University of Santa Catarina, UFSC, Florianópolis, SC, Brazil. Electronic address: marinacdepra@gmail.com.
authors.forename: Marina C
authors.initials: MC
authors.lastname: De Prá
authors.affiliation: Embrapa Swine and Poultry, Concórdia, SC, Brazil; Department of Agricultural Engineering, PGEAGRI/CCET-UNIOESTE, Cascavel, PR, Brazil.
authors.forename: Airton
authors.initials: A
authors.lastname: Kunz
authors.affiliation: Department of Environmental Engineering, Federal Technological University of Paraná, Francisco Beltrão, PR, Brazil.
authors.forename: Marcelo
authors.initials: M
authors.lastname: Bortoli
authors.affiliation: Department of Agricultural Engineering, PGEAGRI/CCET-UNIOESTE, Cascavel, PR, Brazil.
authors.forename: Lucas A
authors.initials: LA
authors.lastname: Scussiato
authors.affiliation: Embrapa Swine and Poultry, Concórdia, SC, Brazil.
authors.forename: Arlei
authors.initials: A
authors.lastname: Coldebella
authors.affiliation: USDA-ARS, Coastal Plains Soil, Water and Plant Research Center, 29501 Florence, SC, USA.
authors.forename: Matias
authors.initials: M
authors.lastname: Vanotti
authors.affiliation: Department of Chemical Engineering, Federal University of Santa Catarina, UFSC, Florianópolis, SC, Brazil.
authors.forename: Hugo M
authors.initials: HM
authors.lastname: Soares
mesh_terms: D000641:Ammonia / Q000378:metabolism*; D064751:Ammonium Compounds / Q000378:metabolism; D000693:Anaerobiosis / Q000187:drug effects; D007700:Kinetics; D008962:Models, Theoretical; D058465:Nitrification / Q000187:drug effects*; D009573:Nitrites / Q000494:pharmacology; D009584:Nitrogen / Q000494:pharmacology*; D017711:Nonlinear Dynamics; D010084:Oxidation-Reduction / Q000187:drug effects; D012044:Regression Analysis; D013696:Temperature
chemical_list: D064751:Ammonium Compounds; D009573:Nitrites; D000641:Ammonia; D009584:Nitrogen
keywords: ANAMMOX; Deammonification; Kinetic models; Partial nitritation; Specific nitrogen removal rate