2011 · 11 citations · 14 references
Natural SciencesChemical EngineeringEnvironmental EngineeringEnvironmental ChemistrySoil ChemistrySoil ScienceChemical OxidationIron OxidesRedox ChemistryRedox ProcessesSoil Decomposition ProcessesSoil PollutionChemical Oxidation Of ContaminantsFenton ReactionHydrogen Peroxide TreatmentIron-catalyzed OxidationNanoscale Zero-valent IronOxidationZero-valent IronZero-valent Iron Treatment
5000 gKg -1 of crude oil by using nano zero-valent iron as catalyst. Due to high buffering capacity of soil samples all experiments had been performed in neutral pH. From results, it was found that optimum molar ratio of H 2 O 2 :Fe0 was 33.7:1 with maximum TPH removal, 91%. Optimum reaction time was 4 hours. After 4 hours no H 2 O 2 was detected in the slurry. Moreover, it was found that hydrogen peroxide was heterogeneously decomposed by the soil (due to its organic and/or inorganic components) and its decomposition rate decreases when the iron was previously precipitated– impregnated into the soil.
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