Metal ions qm(mgg-1) K1(Lg-1) R2 Sf
Ni(II) 0.09 4.303 0.997 0.023
Cu(II) 0.08 6.617 0.999 0.015
Zn(II) 0.09 4.914 0.998 0.020
Table 5: Linear Langmuir Isotherm Parameters.