Table 2 Used model parameters for all simulations33,34.
From: Experimental and numerical study of steady state stability in a toluene biodegrading biofilter
Used model parameters | 2 steady sates experiment | Steady increase of inlet concentration | Biofilter experiment | Units |
|---|---|---|---|---|
Collocation points (biofilm) | 10 | 10 | 10 | – |
Henry's constant (H) | 0.25 | 0.25 | 0.25 | – |
Initial biomass (X0) | 0.003 | 0.003 | 0.003 | gbiomass kgcompost−1 |
Specific surface area of biofilm (A) | 0.95 | 1.1 | 0.2375 | m2 kg−1 |
Yield (Y) | 0.5 | 0.5 | 0.5 | g g−1 |
µmax | 0.1 | 0.1 | 0.1 | h−1 |
Vmax | 0.3 | 0.3 | 0.3 | g g−1 h−1 |
Decay rate (a) | 0.0014 | 0.0014 | 0.0014 | h−1 |
Superficial velocity (υs) | 3.63 | 3.63 | 3.63 | m h−1 |
Organic nitrogen content (Norg) | 14.98 | 14.98 | 14.98 | gN gcompost |
Half-saturation constant Km | 0.05 | 0.05 | 0.05 | g m−3 |
Inhibition constant KI | 2.7 | 2.7 | 2.7 | g m−3 |
Nitrogen uptake rate constant (kuptake) | 0.0022 | 0.0022 | 0.0022 | h−1 |
Nitrogen mineralization constant (kmin) | 0.00007 | 0.00007 | 0.00007 | h−1 |
Michaelis–Menten constant for nitrogen (KN) | 0.5 | 0.5 | 0.5 | gN kgcompostdw−1 |
Mass fraction of nitrogen in toluene degrading biomass (fN) | 0.126 | 0.126 | 0.126 | gN gbiomass−1 |
Porosity of the biofilter (ε) | 0.55 | 0.55 | 0.55 | – |
Diffusivity in biofilm (D) | 1.5E−10 | 1.5E−11 | 1.5E−12 | m2 s−1 |
Density of bulk (ρbulk) | 555 | 555 | 306 | kgcompost mbiofilter−3 |
Density of biofilm (ρbio) | 1.00E+05 | 1.00E+05 | 1.00E+05 | g m−3 |
