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Table 1 Physicochemical properties of cotton byproduct-derived biochar at different pyrolysis temperatures

From: Utilization of cotton byproduct-derived biochar: a review on soil remediation and carbon sequestration

Biochar type

Pyrolysis temperature (°C)

Yield (%)

Elemental analysis (%)

Atomic ration (%)

SBET (m2/g)

References

[C]

[H]

[O]

[N]

[S]

H/C

O/C

Cottonseed Hull Biochar

200

83.4 ± 0.8

51.9 ± 0.5

6.0 ± 0.1

40.5 ± 0.4

0.60 ± 0.04

0.99 ± 0.01

1.38 ± 0.02

0.59 ± 0.01

n.d

[65]

Cottonseed Hull Biochar

350

36.8 ± 0.1

77 ± 1

4.53 ± 0.05

15.70 ± 0.04

1.9 ± 0.4

0.8 ± 0.1

0.70 ± 0.01

0.153 ± 0.001

4.7 ± 0.8

Cottonseed Hull Biochar

500

28.9 ± 0.1

87.5 ± 0.1

2.82 ± 0.02

7.6 ± 0.2

1.5 ± 0.1

0.50 ± 0.01

0.385 ± 0.003

0.065 ± 0.002

0

Cottonseed Hull Biochar

650

25.4 ± 0.2

91.0 ± 0.4

1.26 ± 0.02

5.9 ± 0.3

1.6 ± 0.1

0.26 ± 0.03

0.166 ± 0.002

0.049 ± 0.003

34 ± 3

Cottonseed Hull Biochar

800

24.2 ± 0.6

90 ± 1

0.6 ± 0.1

7 ± 1

1.9 ± 0.1

0.16 ± 0.03

0.08 ± 0.01

0.06 ± 0.01

322 ± 1

Cotton Stalk Biochar

250

71.17 ± 0.49

50.93

5.29

33.00

1.29

0.18

10.39

64.79

4.19

[66]

Cotton Stalk Biochar

350

42.75 ± 0.63

60.33

4.17

19.15

1.56

0.24

6.91

31.74

4.37

Cotton Stalk Biochar

450

35.62 ± 0.53

64.52

3.27

12.65

1.51

0.29

5.07

19.61

4.57

Cotton Stalk Biochar

550

33.21 ± 0.11

66.70

2.54

10.77

1.33

0.26

3.81

16.15

6.04

Cotton Stalk Biochar

650

31.39 ± 0.29

67.77

1.89

9.07

1.24

0.30

2.79

13.38

4.43