Elements

Rice husk (RH)

Rice husk char (RHC)

Soil

Proximate analysis (%)

Moisture content

3.51

4.25

-

Volatile matter

67.64

15.64

-

Ash

17.11

44.87

-

Fixed carbon

11.74

35.24

-

Ultimate analysis (%)

C

38.30

40.10

2.00

H

5.60

1.70

0.80

N

0.30

0.50

0.20

C/N ratio

136.60

87.20

11.60

pH

6.80

10.50

5.90

EC (µs/cm)

-

1.67

1.42

CEC (cmol∙kg⁻¹)

-

37.4

26.7

(BET) surface area (m²∙g⁻¹)

2.60

97.20

11.20

Total Nitrogen (g/Kg)

2.93

4.28

1.34

Total Phosphorus (g/Kg)

0.49

2.01

1.96

Bulk density (g/cm³)

0.10

0.17

1.19