Table 2 Comparison of leaching effect indicators for Pb-Contaminated soil using leaching agents at different concentrations.

From: Enhanced remediation of Pb(II)-Contaminated Fine-Grained soil using citric acid ex situ leaching coupled with electrochemical treatment

 

Pb2+ removal rate (%)

pH

Conductivity

Citric acid (0.01 mol)

8.76

7.19

1295 µS·cm−1

Citric acid (0.02 mol)

9.43

6.92

1321µS·cm−1

Citric acid (0.05 mol)

10.54

6.13

1372 µS·cm−1

HCl (0.01 mol)

10.52

4.27

3086 µS·cm−1

HCl (0.02 mol)

11.86

4.11

3299 µS·cm−1

HCl (0.05 mol)

15.95

3.25

3853 µS·cm−1

FeCl3(0.01 mol)

6.15

7.05

1895 µS·cm−1

FeCl3(0.02 mol)

7.29

6.53

2125 µS·cm−1

FeCl3(0.05 mol)

10.52

5.62

2532 µS·cm−1

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