Table 2 Thermodynamic parameters of Cd(II) and Pb(II) ions adsorption on SR–PAA.

From: High and fast adsorption of Cd(II) and Pb(II) ions from aqueous solutions by a waste biomass based hydrogel

Ions

T

(K)

ΔG

(kJ mol−1)

ΔH

(kJ mol−1)

ΔS

(J mol−1K−1)

R2

Pb(II)

298

−2.16

−8.11

−20.31

0.9376

308

−1.96

318

−1.75

Cd(II)

298

−0.17

−2.04

−6.38

0.9992

308

−0.11

318

−0.04

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