Conditioning method

pH

Add amount

Reaction time

references

Fenton

4

Fe²⁺ 0.9 g/L; H₂O₂: 5.0 g/L

30 min

[22]

CPAM method

7.6

70 mg/L

5 min

[23]

${\text{Fe}}^{\text{2}+}/{\text{S}}_{\text{2}}{\text{O}}_8^{2-}$ composite CaO

7.6

Fe²⁺ 18.9 mg/gDS; ${\text{S}}_{\text{2}}{\text{O}}_8^{2-}$ 81 mg/gDS; CaO 200 mg/g

20 min

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