Table 1: Isotherm parameters for the removal of Ni(II) by CH at different temperatures.

Isotherm ParameterTemperature (K)
298308318

Langmuir (mgg−1)10.2310.5711.24
(Lmg−1)0.05740.41880.4134
0.67810.92300.9516

Freundlich (L  g−1 mg )0.85132.91873.059
1.64251.9921.9286
0.9445 0.99210.9581

D-R (mgg−1)4.856.417.122
(mol2KJ−2)−1.4508−0.1024−0.1181
(KJmol−1)0.5872.2092.058
0.76700.84880.9171