Abstract：
:The inclusion of S0 hydrolysis in a kinetic model of autotrophic denitrification has been recently proposed; however the model has not been calibrated or validated yet. Thus, a new methodology was developed and applied to calibrate and validate this kinetic model for the first time. An inoculum adapted from a poultry wastewater treatment plant at stoichiometric S0/NO3- ratio was used. The model was calibrated with batch data (initial nitrate concentrations of 50 and 6.25 mg NO3--N/L) at an S0/N ratio = 2.29 mg S/mg N and validated with seven different batch data. The sensitivity analysis showed that the most sensitive parameters are related to S0 hydrolysis. The kinetic model was successfully calibrated with the new methodology and validated, with Theil inequality coefficient values lower than 0.21. Thus, the proposed model and methodology were proved to be well suited for the simulation of elemental sulfur-based autotrophic denitrification in batch systems.
journal_name
Bioresour Technoljournal_title
Bioresource technologyauthors
Huiliñir C,Acosta L,Yanez D,Montalvo S,Esposito G,Retamales G,Levicán G,Guerrero Ldoi
10.1016/j.biortech.2020.123229subject
Has Abstractpub_date
2020-07-01 00:00:00pages
123229eissn
0960-8524issn
1873-2976pii
S0960-8524(20)30500-9journal_volume
307pub_type
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