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Table 6 Kinetic parameters for Cd2+ and Pb2+ removal using the home-prepared porous carbons

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

KOH-AC

Pb2+

0.985

12.61

1.000

NaOH-AC

Pb2+

0.993

1.82

0.999