Table 2.

Parameter values of the isotherm models in the adsorption of dyes by the PAC adsorbent.

Models	Parameter	CR		MB
		RSS	RS	RSS	RS
Freundlich	k (mg g−1)	0.57	0.32	0.48	0.28
	1/n	0.46	0.53	2.14	0.18
	R2	0.89	0.67	0.76	0.91
Langmuir	R1	0.99	0.79	0.79	0.51
	Qmax (mg g−1)	659.35	227.27	458.43	769.23
	R2	0.98	0.51	0.64	0.87
Dubinin-Radushkevich	Qmax (mg g−1)	471.77	93.61	479.81	63.37
	E (kJ/mol)	1.65	2.34	1.84	2.67
	R2	0.81	0.76	0.67	0.54