Metal ions
K
1
q
e
(mgg
-1
)
R
2
Ni(II)
0.031
0.002
0.406
Cu(II)
0.019
0.002
0.268
Zn(II)
0.024
0.001
0.325
Table 7:
Kinetic parameter values for the pseudo-first order rate for the sorption of the three metal-ions.