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Table 7 Thermodynamic functions of the removal of Pb2+ over the chemically activated carbons

From: Adsorption of aqueous Cd(II) and Pb(II) on activated carbon nanopores prepared by chemical activation of doum palm shell

Temperature

Functions

KOH-AC

NaOH-AC

ZnCl2-AC

303

G o

−3.885

−0.7878

−6.89

308

 

−4.151

−0.9116

−7.74

313

 

−4.663

−1.332

−8.17

318

 

-6.274

−4.0873

−8.58

323

 

−7.737

−4.7771

−9

 

S o

199.5

230.1

100.8

 

H o

57.0

69.6

7.0