Table 3 Thermodynamic parameters computed according to Zhou and Zhou68 and Milonjic67.

From: Equilibrium and thermodynamic investigation of biosorption of nickel from water by activated carbon made from palm kernel chaff

T

CPKC (pH 9)

UPKC (pH 9)

CPKC (pH 3)

UPKC (pH 3)

∆G (kJ/mol)

∆S (J/mol/K)

∆H (kJ/mol)

∆G (kJ/mol)

∆S (J/mol/K)

∆H (kJ/mol)

∆G (kJ/mol)

∆S (J/mol/K)

∆H (kJ/mol)

∆G (kJ/mol)

∆S (J/mol/K)

∆H (kJ/mol)

After Milonjic64

30

−30.7

265.9

−49.7

−27.6

530.8

−133.5

−23.4

189.3

−33.8

−24.1

20.8

17.4

35

−32.7

  

−29.4

  

−24.9

  

−23.0

  

40

−33.4

  

−33.0

  

−25.2

  

−24.4

  

T

CPKC (pH 9)

UPKC (pH 9)

CPKC (pH 3)

UPKC (pH 3)

∆G (kJ/mol)

∆S (J/mol/K)

∆H (kJ/mol)

∆G (kJ/mol)

∆S (J/mol/K)

∆H (kJ/mol)

∆G (kJ/mol)

∆S (J/mol/K)

∆H (kJ/mol)

∆G kJ/mol)

∆S (J/mol/K)

∆H (kJ/mol)

After Zhou and Zhou65

30

−33.69

275.72

−49.65

−30.60

540.66

−133.5

−26.33

199.07

−33.81

−27.12

30.58

17.44

35

−35.69

  

−32.41

  

−27.89

  

−26.03

  

40

−36.43

  

−36.03

  

−28.30

  

−27.45