Table 3 Fitting parameters of heavy metal ions adsorption kinetics using Weber-Morris model.

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

Ion

C0 mg L−1

Weber-Morris model

k1 mg g−1 min−1/2

I1

R2

k2 mg g−1 min−1/2

I2

R2

Pb(II)

250

48.7

3.5

0.993

11.6

137.2

0.956

Cd(II)

100

32.3

5.4

0.965

40.7

1.2

0.987

Cu(II)

250

32.5

6.4

0.997

4.8

38.5

0.925

Zn(II)

250

19.1

6.2

0.956

3.6

23.5

0.993

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