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Table 4 Relative fractions of the C and O contributions derived from peak fitting of high-resolution C 1 s and O 1 s XPS spectra

From: Overcoming biomass recalcitrance by synergistic pretreatment of mechanical activation and metal salt for enhancing enzymatic conversion of lignocellulose

Sample

Relative fraction of C (%)

Relative fraction of O (%)

C1

C2

C3

O1

O2

Untreated lignin

66.99

31.12

1.89

5.66

93.34

MA-pretreated lignin

60.55

36.33

3.12

8.09

91.91

MA + AlCl3 pretreated lignin

60.61

33.94

5.45

14.16

85.84

MA + FeCl3 pretreated lignin

60.94

34.98

4.08

10.15

89.85

MA + Al(NO3)3 pretreated lignin

60.45

35.31

4.24

10.87

89.13

MA + Fe(NO3)3 pretreated lignin

59.98

35.12

4.90

12.28

87.72

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Biotechnology for Biofuels and Bioproducts

ISSN: 2731-3654

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