Table 2. Langmuir and Freundlich adsorption isotherm parameters of raw materials and pretreated biomass

Biomass	Langmuir				Freundlich
	Qmax(mg/g)	KL(mL/mg)	RL	R2	KF(mg/g(L/mg)1/n)	1/n	R2
M	25.13	0.0047	0.18	0.98	1.12	2.30	0.99
M-HT	26.39	0.0050	0.17	0.98	1.28	2.35	0.99
M-SCHT	45.81	0.0049	0.17	0.95	1.79	2.16	0.87
M-OCHT	57.80	0.0068	0.13	0.99	2.63	2.19	0.95
M-SCHT/BM	60.24	0.0069	0.13	0.99	2.92	2.25	0.93
M-OCHT/BM	67.57	0.0150	0.06	0.94	3.55	2.01	0.98
O	25.44	0.0055	0.15	0.97	1.44	2.46	0.99
O-HT	28.57	0.0046	0.18	0.97	1.59	2.45	0.99
O-SCHT	45.45	0.0047	0.17	0.95	1.69	2.14	0.93
O-OCHT	47.62	0.0064	0.13	0.97	2.26	2.26	0.93
O-SCHT/BM	58.82	0.0123	0.08	0.87	2.59	1.94	0.87
O-OCHT/BM	66.67	0.0138	0.07	0.89	2.83	1.85	0.87
S	29.67	0.0049	0.17	0.93	1.08	2.10	0.98
S-HT	31.45	0.0049	0.17	0.95	1.15	2.11	0.99
S-SCHT	36.76	0.0045	0.18	0.99	1.35	2.14	0.98
S-OCHT	45.79	0.0048	0.17	0.95	1.72	2.14	0.88
S-SCHT/BM	53.76	0.0058	0.15	0.99	2.03	2.08	0.98
S-OCHT/BM	62.50	0.0073	0.12	0.99	3.13	2.29	0.94

M, miscanthus; O, oak; S, sweet sorghum bagasse; HT, hydrothermal pretreatment; BM, ball-milling pretreatment; SC, condensate of sweet sorghum bagasse; OC, condensate of oat bran.