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Journal of Analytical Science and Technology

Table 4 Kinetic parameters obtained for the ACs studied using three different models

From: Performance assessment of activated carbon thermally modified with iron in the desulfurization of biogas in a static batch system supported by headspace gas chromatography

Sample ID

PFO model

PSO model

Bangham’s model

 

qexp

qcalc

k1 (× 10–2)

R2

qcalc

k2 (× 10–4)

R2

qcalc

kb (× 10–2)

R2

AC

38.1

41.2

1.65

0.999

55.4

2.63

0.999

42.7

2.05

0.999

AC3

40.0

36.9

2.88

0.999

42.8

8.83

0.999

46.0

11.8

0.999

AC3Fe

66.3

68.5

3.04

0.999

78.8

5.27

0.999

68.5

3.20

0.999

AC5Fe

52.1

56.4

2.16

0.999

68.5

3.53

0.999

56.2

2.00

0.999

AC7Fe

37.0

40.5

1.58

0.999

55.0

2.46

0.999

42.4

2.04

0.999

  1. qexp = experimental adsorption capacity (mg g−1)
  2. qcalc = calculated adsorption capacity (mg g−1)
  3. k1 and kb = rate constant for PFO and Bangham’s models, respectively, (min−1)
  4. k2 = rate constant for PSO model (mg g−1 min−1)
  5. PFO pseudo-first-order model, PSO pseudo-second-order model
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