scholarly works in Crop Protection & Environmental Biology
Permanent URI for this collectionhttps://repository.ui.edu.ng/handle/123456789/491
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Item Total Petroleum Hydrocarbon and Heavy Metal Remediation with Jatropha curcas L. Seedlings Grown on Spent Oil Polluted Soil(2016) Idowu, O. D.; Fayinminnu, O. O.Soil contamination by Spent Lubricating Oil (SLO) has adverse environmental effect because of its highly toxic constituents including heavy metals and complex mixtures of heavy Polycyclic Aromatic Hydrocarbons (PAHs). The presence of this wide range of toxic metals and compounds is responsible for its perceived adverse effect on flora and fauna in particular and the environment in general. This study employed Jatropha curcas seedlings in phytoremediating organically amended and unamended soil contaminated with 0, 3 and 6% (w/w) SLO for 84 days. Total Petroleum Hydrocarbon (TPH) and heavy metal concentration of the phytoremediated soil were assessed every 28 days and at the beginning and the end of the experiment respectively. Phytoremediation with J. curcas seedlings was effective in the breakdown of TPH content of the polluted soil. At the end of the study, TPH reduction was higher in phytoremediated soil with up to 91.54% in amended soil and 84.81% in unamended soil at 3% level of pollution. For the three heavy metals investigated, there was a general reduction in their concentration at the end of the phytoremediation process in the order Pb>Cd>Fe. This study has shown that J. curcas seedlings together with organic soil amendment is a veritable tool for phytoremediation of SLO polluted soils.