Table 2. Experimental Data and the Kinetic Parameters Obtained with the Evaluated Models.

	experimental		modified Gompertz model				first-order kinetics
	M	Rmax	M0	Rmax	Λ	R2	M0	kh	R2
substrate	mL CH4/g VSin	mL CH4/g VSin·d	mL CH4/g VSin	mL CH4/g VSin·d	D		mL CH4/g VSin	d–1
raw sludge	197	13.6	194	9.03	0.01	0.985	259	0.04	0.990
TPS	310	45.8	293	27.43	0.00	0.974	305	0.14	0.996
64%TPS-36%FW	485	59.9	463	51.97	0.64	0.988	479	0.16	0.995
37%TPS-64%FW	621	64.8	601	56.94	1.13	0.995	619	0.14	0.995
17%TPS-83%FW	731	69.2	711	61.12	1.24	0.997	742	0.12	0.997
FW	819	56.7	846	50.69	1.86	0.999	1195	0.04	0.974