Table 1 Structural properties of the adsorbents.

From: Enhanced removal of heavy metal ions from aqueous solution using manganese dioxide-loaded biochar: Behavior and mechanism

Sorbents

MnO2 contenta (wt.%)

Mn(IV) contentb (wt.%)

SBET (m2 g−1)

Vpc (cm3 g−1)

dpd (nm)

BC

0.6

0.5

3.5

0.01

4.1

BC@MnO2-12.3

12.3

6.9

135.9

0.19

3.7

BC@MnO2-18.4

18.4

10.7

181.9

0.25

3.7

BC@MnO2-26.3

26.6

16.0

120.2

0.14

3.5

BC@MnO2-30.2

30.2

17.8

12.5

0.03

2.0

  1. aDetermined by X-ray fluorescence.
  2. bDetermined by using oxalic acid-permanganate back-titration method.
  3. cTotal pore volume, determined at P/P0 = 0.97.
  4. dMost probable pore diameter, determined by BJH pore size distribution.
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