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Table 2 The properties of co-pyrolysis biochars

From: Bioavailability and speciation of Cadmium in contaminated paddy soil as alleviated by biochar from co-pyrolysis of peanut shells and maize straw

Samples

Yield [%]

Ash content%

N [%]

C [%]

H [%]

0 [%]

O/C ratio

H/C ratio

BET [m2/g]

P

30.44 ± 1.04

25.32 ± 0.05

0.58 ± 0.08

59.82 ± 2.37

1.77 ± 0.09

12.35 ± 0.19

20.64

2.96

2.24

M

34.32 ± 0.72

31.26 ± 0.07

1.44 ± 0.09

58.49 ± 1.43

1.79 ± 0.06

15.00 ± 0.45

25.64

3.06

2.78

1P1M

31.74 ± 1.49

27.72 ± 0.14

1.12 ± 0.11

60.30 ± 0.46

1.82 ± 0.20

12.70 ± 0.18

21.06

3.02

2.46

1P2M

32.76 ± 0.75

28.52 ± 0.08

1.32 ± 0.14

58.67 ± 1.05

1.79 ± 0.02

14.85 ± 0.31

25.31

3.05

2.37

2P1M

32.89 ± 1.08

29.69 ± 0.11

1.05 ± 0.14

59.23 ± 1.68

1.69 ± 0.06

13.75 ± 0.30

23.21

2.85

1.35

1P3M

34.12 ± 1.07

30.27 ± 0.17

0.61 ± 0.06

60.31 ± 0.85

1.77 ± 0.05

17.90 ± 0.14

29.68

2.93

3.53

3P1M

33.46 ± 0.93

27.54 ± 0.09

0.90 ± 0.12

55.61 ± 0.92

1.80 ± 0.02

12.85 ± 0.06

23.11

3.23

1.19