Table 2.

Final methane potential (mL CH₄/g VS) and time taken to reach 100%, 80%, and 50% of this potential with cellulose, grass–manure mixture, and milled feed wheat (MFW) substrates for the two different inocula (GB, GC) in the biomethane potential (BMP) test. The methane values were standardized to normal atmospheric pressure (273.15 K, 1 bar).

		Cellulose				Grass-manure mixture				MFW
		Days to Reach % of Final Potential			Final Potential	Days to Reach % of Final Potential			Final Potential	Days to Reach % of Final Potential			Final Potential
Test	Inoculum	100%	80%	50%		100%	80%	50%		100%	80%	50%
I	GB0_0	28	14	9	261 ± 33	52	16	5	329 ± 27	28	14	4	282 ± 24
	GC0_0	28	14	9	281 ± 17	52	17	7	382 ± 71	28	13	5	307 ± 53
II	GB1_231	119	56	21	350 ± 43	47	17	9	252 ± 29	65	27	15	278 ± 13
	GB2_231	119	61	35	270 ± 72	119	55	8	289 ± 11	119	54	19	322 ± 51
	GC1_231	119	61	35	308 ± 4	119	45	17	327 ± 46	119	54	25	333 ± 43
	GC2_231	119	61	38	274 ± 30	119	37	15	379 ± 73	119	39	25	307 ± 14