Fig 1.
Remediation mechanism of sodium persulfate.
Fig 2.
A schematic representation of the sampling locations at the contaminated site.
Table 1.
Physical, chemical indexes and pollutant content of contaminated soil.
Table 2.
Test design details.
Fig 3.
Process flow diagram for remediation of contaminated soil with modified sodium persulfate.
Table 3.
Instrument calibration parameters.
Fig 4.
Effect of different FNS and Na2S2O8 additions on soil pH values.
Fig 5.
Effect of the number of FNS additions on soil pH.
Fig 6.
Effect of calcium oxide dosing on pH.
Fig 7.
Effect of different FNS and Na2S2O8 additions on TPH content.
Fig 8.
Effect of the number of FNS additions on soil TPH content.
Fig 9.
Effect of calcium oxide dosing on TPH content.
Fig 10.
Effect of different FNS and Na2S2O8 additions on the leaching concentration of SO42-.
Fig 11.
Effect of the number of FNS additions on the leaching concentration of soil SO42-.
Fig 12.
Effect of calcium oxide dosage on the leaching concentration of SO42-.