From: Adsorption of aqueous Cd(II) and Pb(II) on activated carbon nanopores prepared by chemical activation of doum palm shell
Adsorbent
Metal
q e (mg/g)
Pseudo-second order
k 2 (g/mg min)
R2
KOH-AC
Cd2+
0.992
3.83
0.999
Pb2+
0.985
12.61
1.000
NaOH-AC
0.993
1.82