Table 10.

The Langmuir and Freundlich isotherms of P (AA/Kry23-DM) SAP and the poly(AA-co-Kry22-DM) SAP for the heavy metal ions.

Ion	Langmuir Isotherm			Freundlich Isotherm
	Kb	As	R2	k	n	1/n	R2
Cr3+	0.7583	0.0439	0.9599	0.0563	10.8342	0.0504	0.0504
Ni2+	−0.4554	−0.1425	0.4138	11.6547	0.8163	0.9448	0.9448
Mn2	0.4259	0.1101	0.3716	0.6046	1.5152	0.7922	0.7922
Zn2+	0.0070	0.0439	0.8257	0.0479	1.6745	0.9485	0.9485
Cd2+	0.0041	0.0086	0.9863	0.0093	9.3985	0.6939	0.6939
Pb2+	1.7774	0.0121	0.9013	0.0249	8.3542	0.3465	0.3465
Cu2+	0.6626	0.0737	0.6999	0.4560	1.8982	0.8698	0.8698
Co3+	0.9605	0.0663	0.9459	0.3029	2.41255	0.9285	0.9285
Fe3+	0.5979	0.0558	0.5211	0.1313	3.6738	0.0926	0.0926