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Integrating Thermodynamics and Mathematical Modelling to Investigate the Stoichiometry and Kinetics of Sulphide Oxidation-nitrate Reduction with a Special Focus on Partial Autotrophic Denitrification by Eric Valdés; David Gabriel; Daniel González; Giulio Munz; Cecilia Polizzi is a Environmental Science article available to read on EtoBox.

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In the present study, the stoichiometry of the Sulphur Oxidizing-Nitrate Reducing (SO-NR) process, with a focus on Partial Autotrophic Denitrification (PAD), has been evaluated through a thermodynamic-based study whereas a model-based approach has been adopted to assess process kinetics. Experimental data on process performance and biomass yields were available from a previous work achieving efficient PAD, where a biomass yield of 0.113 gVSS/gS was estimated. First, the free Gibbs energy dissipation method has been implemented, in order to provide a theoretical framework exploring the boundaries for sulphur oxidizing biomass yields. Second, a screening of available mathematical models describing SO-NR process was conducted and five published models were selected, in order to assess the most suitable model structure for describing the observed PAD kinetics. To the best of our knowledge, none of reported biomass yields are estimated in systems operating PAD as the main process and, analogously, none of the proposed models have been applied to case studies aiming at partial denitrification only. The work showed that the very low biomass yield of 0.117 ± 0.007 gVSS/gS, observed in a PA

Who reads Integrating Thermodynamics and Mathematical Modelling to Investigate the Stoichiometry and Kinetics of Sulphide Oxidation-nitrate Reduction with a Special Focus on Partial Autotrophic Denitrification?

Author

Eric Valdés; David Gabriel; Daniel González; Giulio Munz; Cecilia Polizzi

Publisher

Elsevier BV

Published

2023

Language

EN

Field

Environmental Science (Physical Sciences)