Application of Wasted Oolong Tea as a Biosorbent for the Adsorption of Methylene Blue

Table 3

Adsorption kinetic fitting results for the MB adsorption onto wasted tea powder.

Initial MB concentration	Qexp (mg·g^−1)	Pseudo-first-order			Pseudo-second-order
		Qcal (mg·g^−1)	K1 (min^−1)	R^2	Qcal (mg·g^−1)	K2 (min^−1)	R^2
100	92.94	29.78	0.039	0.974	92.34	0.0044	0.999
400	288.36	92.55	0.032	0.981	294.10	0.0012	0.999
1000	367.64	144.82	0.033	0.813	370.37	0.0006	0.999
1200	374. 11	76.63	0.024	0.868	370.37	0.0014	0.998
1500	404.76	72.67	0.027	0.703	400.00	0.0018	0.999