Investigating Methylene Blue Removal from Aqueous Solution by Cysteine-Functionalized Mesoporous Silica

Table 3

Linear isotherm parameters for MB removal by MSN-Cys at 150 ppm and 25°C.

Isotherms	Parameters	pH
		1.5	7	8.5
Langmuir	qm (mg/g)	61.35	250	384
	KL (L/mg)	0.03	0.01	0.05
	R^2	0.87	0.70	0.85
Freundlich	KF ((mg/g)/(mg/L)^1/n)	0.05	2.10	3.90
	N	0.60	1.75	3.66
	R^2	0.98	0.97	0.98
Temkin	bT	34.70	56.19	37.69
	KT (L/g)	0.04	0.15	0.99
	R^2	0.93	0.90	0.96