Table 2 Total elemental contents of rice straw and its derived biochar.

From: Transformations in physicochemical properties and pore structure of biochar derived from rice straw revealed by synchrotron techniques

Elemental content (mg kg− 1)

Organic material

RS

RSBC

Total P

361.5 ± 6.0b

1281.6 ± 8.6a

Total K

5190.2 ± 37.1b

15775.1 ± 145.8a

Total Ca

2641.5 ± 27.6b

7981.2 ± 286.3a

Total Mg

1421.9 ± 5.7b

3273.1 ± 68.5a

Total S

538.1 ± 2.3a

94.5 ± 9.5b

Total Na

41.8 ± 20.7b

560.5 ± 20.7a

Total Fe

201.4 ± 4.0b

445.8 ± 10.6a

Total Mn

430.9 ± 2.1b

999.9 ± 6.6a

Total Cu

11.9 ± 0.7a

6.6 ± 0.6b

Total Zn

72.0 ± 1.4b

112.5 ± 2.1a

  1. Results are expressed as mean values ± standard deviation (n = 3). The letters (a and b) indicate significant differences between tested properties on rice straw and its derived Biochar (p < 0.05).
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