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Table 4 List of identified compounds, their relative %-area, and similarity index during the analytical pyrolysis (using Py-GC–MS) of B-BM

From: Biochar synthesis from mineral and ash-rich waste biomass, part 2: characterization of biochar and co-pyrolysis mechanism for carbon sequestration

Peak

#

For the biochar B001

For the biochar B010

For the biochar B100

Area

%

Similarity index

Compound

Area

%

Similarity index

Compound

Area

%

Similarity index

Compound

1

64.96

97

Carbon dioxide

68.62

97

Carbon dioxide

85.07

95

Carbon dioxide

2

16.38

97

Benzene

6.94

97

Benzene

1.00

98

o-Xylene

3

0.62

95

Cyclobutene, 2-propenylidene-

0.50

94

Phenol, 4-[2-(methylamino)ethyl]-

1.76

98

Styrene

4

4.31

96

Toluene

3.08

97

Toluene

1.30

95

Phenol

5

0.34

96

Ethylbenzene

1.58

95

Cyclobutene, 2-propenylidene-

1.12

98

Benzonitrile

6

0.65

98

o-Xylene

0.25

96

2-Acetyl-2-methyltetrahydrofuran

0.38

92

Azetidine, 3-methyl-3-phenyl-

7

1.45

98

Styrene

0.35

94

Pyridine, 3-methyl-

0.46

97

Benzene, 1-ethynyl-4-methyl-

8

0.79

95

Phenol

1.12

97

Ethylbenzene

2.27

99

Naphthalene

9

0.80

98

Benzonitrile

1.06

98

o-Xylene

0.23

97

Cyclopenta[c]thiapyran

10

0.26

94

Benzene, 1-ethenyl-4-methyl-

0.48

95

p-Xylene

0.53

98

Isoquinoline

11

0.32

91

Benzofuran

0.16

99

Nitrous Oxide

0.26

99

Quinoline

12

0.41

97

Benzene, 1-ethynyl-4-methyl-

0.31

91

1-Nonene

0.28

95

Indole

13

2.72

98

Naphthalene

1.30

98

Styrene

0.64

98

Naphthalene, 2-methyl-

14

0.32

98

Isoquinoline

0.51

94

Benzene, 1-ethyl-3-methyl-

0.43

98

Naphthalene, 1-methyl-

15

0.13

98

Quinoline

0.69

95

Phenol

0.55

98

Biphenyl

16

0.23

96

Indole

0.41

94

Benzoic acid, 2-fluoro-, 2-oxo-2-phenylethyl ester

0.14

95

Biphenyl

17

0.52

98

Naphthalene, 2-methyl-

0.80

93

Benzonitrile

0.31

97

Acenaphthylene

18

0.34

98

Naphthalene, 1-methyl-

0.67

93

Ethanone, 2-(formyloxy)-1-phenyl-

0.12

97

Naphtho[2,1-b]furan

19

0.46

97

Biphenyl

1.04

92

Indene

0.16

98

2-Naphthalenecarbonitrile

20

0.26

98

Acenaphthylene

2.87

92

m-Cresol

0.37

95

Dibenzofuran

21

0.29

96

Dibenzofuran

0.55

94

1H-Indene, 3-methyl-

0.35

96

Fluorene

22

0.25

95

Fluorene

0.26

94

1-Dodecene

0.12

97

Dibenzothiophene

23

0.86

98

Phenanthrene

0.35

96

Dodecane

0.75

98

Phenanthrene

24

0.18

96

9H-Fluorene, 9-methylene-

1.27

98

Azulene

0.29

98

9H-Carbazole, 9-nitroso-

25

0.22

98

9H-Carbazole, 9-nitroso-

0.13

90

1H-Indene, 1-ethylidene-

0.12

97

Phenanthrene, 2-methyl-

26

0.10

97

Anthracene, 1-methyl-

0.35

95

Tetradecane

0.17

98

2-Phenylnaphthalene

27

0.17

97

2-Phenylnaphthalene

0.46

95

Indole

0.22

97

Fluoranthene

28

0.33

97

Fluoranthene

0.58

97

Naphthalene, 2-methyl-

0.24

97

Pyrene

29

0.35

97

Pyrene

0.33

98

Naphthalene, 1-methyl-

0.11

97

7H-Benzo[c]fluorene

30

0.41

97

Benz[a]anthracene

0.78

96

Biphenyl

0.24

97

Benz[a]anthracene

31

0.36

97

Benzo[j]fluoranthene

0.21

97

Acenaphthylene

   

32

0.21

96

Perylene

0.13

96

Pentadecane

   

33

   

0.36

96

Fluorene

   

34

   

0.17

95

1-Heptadecene

   

35

   

0.19

95

Tetratriacontane

   

36

   

0.40

96

9H-Fluorene, 4-methyl-

   

37

   

0.13

95

Eicosane

   

38

   

0.16

95

Anthracene

   

39

   

0.12

97

Fluoranthene

   

40

   

0.17

96

Pyrene

   

41

   

0.17

95

Benz[a]anthracene