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Table 3 Kinetic parameters and correlation coefficients of the two kinetic equations on c-MCM-41(40)

From: Investigating the Heavy Metal Adsorption of Mesoporous Silica Materials Prepared by Microwave Synthesis

Metal ions

q e.exp (mg/g)

First-order kinetic model

Second-order kinetic model

a e,cal (mg/g)

K 1

R 2

q e,cal (mg/g)

K 2

R 2

Cu2+

11.57

2

0.2758

0.6427

11.61

0.5733

0.9975

Pb2+

18.7

5.74

0.2401

0.8839

19.4

0.1467

0.9998

Cd2+

9.25

1.83

0.199

0.6231

9.44

0.291

0.9909

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