Biogas Production Optimization in the Anaerobic Codigestion Process: A Critical Review on Process Parameters Modeling and Simulation Tools

Table 1

Optimum ranges of operational parameters for the optimization of the anaerobic codigestion process.

Operational parameter	Optimal values	References
ISR	>2 : 1	[33]
C/N ratio	20–30 : 1	[34]
pH	6–8.50	[30, 35]
OLR	1–6 g VS or COD/l.d	[32, 36]
Temperature	Cryophilic (15–25°C), mesophilic (35–40°C), and thermophilic (50–60°C)	[37]
VFA/TA ratio	0.20–0.40	[14]
TA	1000–5000 mg CaCO3/l	[27]

d, day; TA, alkalinity; l, litter; mg, milligram; g, gram.