Abstract
The ability of three chemical oxidants(Fenton’s reagent, Potassium permanganate and Potassium persulfate) to degrade one of the recalcitrant non-hydrocarbon components of crude oil- the porphyrins at three different pH media was investigated in this work and the results showed that the oxidants removed less than 10% of the porphyrins on the average, after two months of treatment. The porphyrins were found to experience degradation of 5%,7% and 4% on the average for the acidic, neutral and basic soils respectively for the vanadyl (VO 2+ ) porphyrins and a reduction of 7%,15% and 7% on the average for the acidic ,neutral and basic soils respectively for the Nickel (Ni 2+ ) porphyrins. This highlighted the recalcitrant nature of porphyrins, but also showed that they are not perfectly so in the presence of chemical oxidants.
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