A fast linear predictive adaptive model of packed bed coupled with UASB reactor treating onion waste to produce biofuel

Table 3 Comparison between various model applications for anaerobic digestion

Reactor	Model	System	Number of data	Constant supposed	Independent variables	Reference
UASB	ANFIS	Continuous	85	No	pH, COD, VFA	[31]
CSTR	ANFIS	Continuous	165	No	pH, influent VS concentration, temperature	[55]
CSTR	ADM1	Continuous	20	Yes	AGV, yield	[56]
CSTR	AMD1	Continuous	140	Yes	pH, inorganic nitrogen, gas flow rate, COD	[57]
CSTR - UASB	AMD1	Continuous	120	Yes	COD, pH, VFA	[58]
LBAR	AMD1	Batch	81	Yes	VFA, biogas volume, methane concentration, pH	[59]
CSTR - CSTR	‘‘Adaptive’’ discrete state space model	Continuous	85	No	VFA, total COD, soluble COD, total solids, pH, methane volume	[32]
HPR2-UASB	LPAM	Semi-continuous	30	No	VFA, COD, total nitrogen, ammonium nitrogen, alkalinity, methane volume	This study

ISSN: 1475-2859