A local sensitivity analysis was performed for a chemically synthesized elemental sulfur (S0)-based two-step denitrification model, accounting for nitrite (NO2-) accumulation, biomass growth and S0 hydrolysis. The sensitivity analysis was aimed at verifying the model stability, understanding the model structure and individuating the model parameters to be further optimized. The mass specific area of the sulfur particles (a*) and hydrolysis kinetic constant (k1) were identified as the dominant parameters on the model outputs, i.e. nitrate (NO3-), NO2- and sulfate (SO42-) concentrations, confirming that the microbially catalyzed S0 hydrolysis is the rate-limiting step during S0-driven denitrification. Additionally, the maximum growth rates of the denitrifying biomass on NO3- and NO2- were detected as the most sensitive kinetic parameters.

Sensitivity analysis for an elemental sulfur-based two-step denitrification model / Kostrytsia, A.; Papirio, S.; Mattei, M. R.; Frunzo, L.; Lens, P. N. L.; Esposito, G.. - In: WATER SCIENCE AND TECHNOLOGY. - ISSN 0273-1223. - 78:6(2018), pp. 1296-1303. [10.2166/wst.2018.398]

Sensitivity analysis for an elemental sulfur-based two-step denitrification model

Papirio, S.;Mattei, M. R.;Frunzo, L.;Esposito, G.
2018

Abstract

A local sensitivity analysis was performed for a chemically synthesized elemental sulfur (S0)-based two-step denitrification model, accounting for nitrite (NO2-) accumulation, biomass growth and S0 hydrolysis. The sensitivity analysis was aimed at verifying the model stability, understanding the model structure and individuating the model parameters to be further optimized. The mass specific area of the sulfur particles (a*) and hydrolysis kinetic constant (k1) were identified as the dominant parameters on the model outputs, i.e. nitrate (NO3-), NO2- and sulfate (SO42-) concentrations, confirming that the microbially catalyzed S0 hydrolysis is the rate-limiting step during S0-driven denitrification. Additionally, the maximum growth rates of the denitrifying biomass on NO3- and NO2- were detected as the most sensitive kinetic parameters.
2018
Sensitivity analysis for an elemental sulfur-based two-step denitrification model / Kostrytsia, A.; Papirio, S.; Mattei, M. R.; Frunzo, L.; Lens, P. N. L.; Esposito, G.. - In: WATER SCIENCE AND TECHNOLOGY. - ISSN 0273-1223. - 78:6(2018), pp. 1296-1303. [10.2166/wst.2018.398]
File in questo prodotto:
File Dimensione Formato  
2018 - Kostrytsia et al. - Water Science & Technology - Sensitivity analysis for S0-based denitrification model.pdf

accesso aperto

Tipologia: Documento in Post-print
Licenza: Dominio pubblico
Dimensione 424.21 kB
Formato Adobe PDF
424.21 kB Adobe PDF Visualizza/Apri

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11588/724909
Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 7
  • ???jsp.display-item.citation.isi??? 6
social impact