Tea Stem as a Sorbent for Removal of Methylene Blue from Aqueous Phase

Table 2

Adsorption isotherm fittings for the MB adsorption onto tea stem powder (RM = 4 g/L; pH = 5.00).

Temperature (K)	Qexp (mg/g)	Langmuir			Freundlich			Temkin			D-R
		Qmax (mg/g)	b (L/mg)	R^2	1/n	Kf (mg/g)	R^2	A (L/mg)	b (J/mol)	R^2	QD-R (mg/g)	β	E (kJ/mol)	R^2
298	99.80	103.09	0.06	0.99	0.29	19.31	0.96	1.70	159.41	0.99	85.53	2.48	0.64	0.93