Table 1 The physicochemical properties of RBC, KMBC and different proportions of HAs/KMBC.

From: Effect of dissolved humic acids and coated humic acids on tetracycline adsorption by K2CO3-activated magnetic biochar

Sample

Surface atomic content (%)

SBET (m2/g)

Vtot (cm3/g)

Dp (nm)

C

N

O

Fe

(O + N)/C

RBC

53.22

08.74

27.15

00.40

67.44

89.40

0.098

4.39

KMBC

15.07

01.90

34.40

19.30

240.88

426.15

0.402

3.77

1% HAs/KMBC

19.28

02.61

36.30

16.11

201.82

364.98

0.308

3.38

10% HAs/KMBC

15.90

02.10

44.89

12.70

295.53

503.64

0.497

3.95

  1. Vtot is total pore volume; Dp is average pore diameter.
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