Table 2.

Isotherm parameters of Langmuir and Sips models for metals and dyes adsorption.

Pollutants	q m,exp (mmol g−1)	Langmuir model			Sips model
		q m (mmol g−1)	k L (L mmol−1)	R 2	q m (mmol g−1)	K S (L mmol−1)	n S	R 2
Pb(II)	0.803	0.817	47.252	0.9893	0.793	50.832	1.099	0.9885
Cd(II)	1.258	1.269	20.219	0.9956	1.247	23.487	1.285	0.9758
BPS	0.177	0.196	108.847	0.9335	0.177	162.623	2.241	0.9965
CIP	0.142	0.161	112.195	0.8629	0.141	180.750	3.501	0.9968
Procaine	0.203	0.199	600.716	0.9809	0.210	484.098	0.750	0.9936
Imipramine	0.149	0.158	214.528	0.9821	0.150	252.313	1.409	0.9994