[Retracted] Microbial Ecology of Anaerobic Digesters: The Key Players of Anaerobiosis

Table 4

Various inocula along various substrates and their potential for biogas production.

Inocula	Pretreatment	Substrate	𝑆/𝐼 ratio	Biogas production	Methane production	Reference
Cow manure	NG	Sea wrack (dislodged sea grasses and sea weeds)	NG	551±126 mL	396.9 mLCH4 g^−1 (volatile solid)	[125]
Marine sediments	NG	Sea wrack	NG	2172±156 mL		[125]
Sea wrack associated microflora	NG	Sea wrack	NG	1223±308 mL		[125]
Municipal Sludge	NG	Food waste	NG	NG	0.49 L CH4/g VS.	[126]
Municipal wastewater sludge		Food waste	1; 0.5; 0.25	NG	660 mL CH4/g VSSsub; 790 mL CH4/g VSSsub; 490 mL CH4/g VSSsub	[127]
Inocula from food waste		Food waste	1; 0.5; 0.25	NG	1000 mL CH4/g VSSsub; 940 mL CH4/g VSSsub; 1400 mL CH4/g VSSsub	[127]
Inocola from WWTP	Preincubated	Primary; sludge	0.5; 1; 2; 4	NG	241 mL CH4/g VSSsub; 221 mL CH4/g VSSsub; 235 mL CH4/g VSSsub; 273 mL CH4/g VSSsub	[127]
	Nonincubated		0.5; 1; 2; 4		283 mL CH4/g VSSSub; 231 mL CH4/g VSSSub; 230 mL CH4/g VSSSub; 235 mL CH4/g VSSSub
Digester sludge	NG	Bulrush	NG	NG	464.3 g COD/g total solids	[162]
Digester sludge	Steam explosion	Bulrush	NG	NG	14.5%	[162]
Rumen fluid	NG	Bulrush	NG	NG	362.8 g COD/g TS	[162]
Rumen fluid	Steam Explosion	Bulrush	NG	NG	18.5%	[162]
Mesophilic anaerobic digester	Ensiling	Fish waste	NG	671–763 mL/g VS	441–482 mL/g VS	[128]
Thermophilic anaerobic sludge	Mixing with distillery wastewater	Cassava residues	NG	NG	259.46 mL/g VS	[131]
Mesophilic activated sludge	Biological; thermal; ultrasound	Microalgae	0.5	Negligible; 46–62%; 6–24%	NG	[163]
Mesophilic activated sludge		Microalgae	0.5	188–395 mL	NG	[163]
Rumen fluids	NG	Cattle manure	17.64; 23.51; 35.27; 70.54	NG	191 mL/g VS; 162 mL/g VS; 144 mL/g VS; 112 mL/g VS	[164]
Sludge digester	NG	Municipal solid waste	2 g VMinoculum/; g VMwaste	NG	150 mL g DM^−1	[165]