Material

Element

Weight (%)

Atomic (%)

Material

Element

Weight (%)

Atomic (%)

Biochar

C

31.26

52.37

Biochar/Fe₃O₄

C

52.61

66.58

O

15.19

19.10

O

27.75

26.36

Mg

0.44

0.36

Fe

13.02

3.54

Al

0.48

0.36

Al

0.17

0.09

Si

1.16

0.83

Si

0.39

0.21

P

1.44

0.94

P

0.47

0.23

Cl

5.62

3.19

Cl

1.02

0.44

K

44.41

22.85

Ca

1.70

0.64

N

0

0

N

2.88

1.90

Total

100

100

Total

100

100