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Ecological Processes

Table 3 Isotherm parameters for Cd2+adsorption on rBC, Sep, and rBC + Sep

From: Passivation remediation of weakly alkaline Cd-contaminated soils using combined treatments of biochar and sepiolite

Samples

Langmuir model

Freundlich model

Qm (mg·g–1)

KL (L·mg–1)

R2

KF [mg·g−1(L·mg−1)1/n]

n

R2

rBC

34.86

0.02

0.96

4.15

0.37

0.96

Sep

28.40

0.01

0.98

6.90

0.56

0.96

rBC + Sep

52.56

0.02

0.97

5.26

0.40

0.94

  1. Saturated adsorption capacity (Qm; mg·g−1), Langmuir adsorption constant (KL; L·mg−1), Freundlich adsorption constant [KF; mg·g−1·(L·mg−1)1/n], Constant of adsorption strength (n)
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