Modeling de novo granulation of anaerobic sludge

BMC Systems Biology

Table 1 Parameters used in model and their correspondent values

Parameter summary
Model parameter	Symbol	Value	Unit	References
Solutes
Diffusion of glucose in liquid	D _g	5.8×10⁻⁶	m ² /day	[59]
Diffusion of acetate in liquid	D _a	1.05×10⁻⁴	m ² /day	[59]
Diffusion of methane in liquid	D _m	1.29×10⁻⁴	m ² /day	[60]
Biofilm Diffusivity	γ	30	%	[42]
Acidogens
Cell mass	B _a	300	fg	[61]
Division radius		3	μm	[62]
Maximum growth rate	\(\hat {\mu _{a}}\)	0.208	h ⁻¹	[61], [56, 63]
Substrate saturation constant	Ks	0.26	g/L	[35, 56]
Product inhibition constant	Ki	0.1	g/L	[56, 63]
Biomass conversion rate	α _bg	0.3	\(\frac {g_{biomass}}{g_{glucose}}\)	[56, 57]
Substrate conversion rate	α _ag	0.82	\(\frac {g_{acetate}}{g_{glucose}}\)	[56, 63]
Death delay		48	h	Estimated
Death threshold		0.02	g/L	Estimated
Methanogens
Cell mass	B _m	1500	fg	[62]
Mass of EPS capsule		10	fg	[54]
Division radius		3	μm	[62]
Maximum growth rate	\(\hat {\mu _{m}}\)	0.1	h ⁻¹	[33, 54]
Substrate saturation constant	Ks	0.005	g/L	[54]
Biomass conversion rate	α _ba	0.15	\( \frac {g_{biomass}}{g_{acetate}}\)	[33, 35]
Substrate conversion rate	α _ma	0.26	\(\frac {g_{methane}}{g_{acetate}}\)	[33]
Death delay		48	h	Estimated
Death threshold		0.00001	g/L	Estimated

ISSN: 1752-0509