Experimental Study on the Effect of Surfactants on Petroleum Hydrocarbon Contaminated Soil Remediation by CaO2
The synthesized nanoscale calcium peroxide was used for the remediation of petroleum hydrocarbons contaminated soil.The influences of calcium peroxide and citric acid chelated ferrous iron dosages on the removal performance of petroleum hydrocarbons were studied,and the oxidation of petroleum hydrocarbons in the presence of different surfactants were also compared.The results show that,the petroleum hydrocarbons removal rates increased first and then decreased with the increase of calcium peroxide or citric acid chelated ferrous iron dosages.The petroleum hydrocarbon removal effect was the best when the molar ratio of calcium peroxide:ferrous iron:citric acid was 4∶1∶1.Sodium dodecyl sulfate and Triton X-100 had better solubilization effect on the petroleum hydrocarbons in soil.3 g/L sodium dodecyl sulfate promoted the degradation of petroleum hydrocarbons,while Triton X-100 was not conducive to the degradation of petroleum hydrocarbons.
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