Table 1.

Parameter equilibrium obtained using Langmuir, Freundlich, Sips, and Toth models

[AC-SC] (g L−1)	Langmuir			Freundlich			Sips		Toth
	Qmax (mg g−1)	KL (L mg−1)	RL	KF ((mg g−1)(mg L−1)−1/n)	n	Qs (mg g−1)	Ks (L mg−1)	ns	Qto (mg g−1)	Bto (L mg−1)	nto
2	0.141	0.027	0.479	0.154	1.94	0.272	0.135	− 8.205	0.021	1.961	0.193
5	0.673	1.234	0.168	0.383	3.351	0.519	0.393	− 5.749	3031	19.87	2.902
7.5	0.744	0.041	0.849	1.9 × 10−4	0.191	0.769	4.985	− 5.337	3008	9250	0.731