PHYTOREMEDIATION POTENTIAL OF KENAF (Hibiscus cannabinus L.) IN LEAD (Pb) CONTAMINATED SANDY LOAM

In a laboratory, a pot experiment was carried out to investigate the potential of Kenaf (Hibiscus cannabinus L.) as a phytoaccumulator of (Lead) Pb at various levels of fake contamination. Pb was applied in the form of lead nitrate [Pb(NO3)2] at concentrations of 0, 100, 200, and 300 mgkg-1 Pb. Kenaf was planted for ten (10) weeks in each of the treatment pots, after which leaves, stems, and roots samples were collected and Pb levels were determined. Before treatment/contamination, the soil was tested for physical and chemical qualities, as well as after 10 weeks of growth. pH, Electrical Conductivity, percent Organic Carbon, Exchangeable Acidity, Exchangeable Bases/cations (Ca2+, Mg2+, Na+, K+), extractable and total Pb concentrations were among the parameters examined. Kenaf tolerated Pb-treated (contaminated) soils at all levels (0 mgkg-1 to 300 mgkg-1 Pb) and showed no poisoning signs, according to the study. The characteristics of soil treated with Pb at various doses did not change considerably. For the cleanup of soil Pb contamination, Kenaf could be recommended as a phytoaccumulator. As a result, additional rounds of growth are required for the kenaf plant to adequately remediate these metal pollutants in soils.

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