EVALUATION OF THE ENVIRONMENTAL REMEDIATION POTENTIAL OF Chromolaena odorata AND Helianthus annuus..

Two common plants, Chromolaena odorata (siam weed) and Helianthus annuus, were used to examine phytoremediation as a non-destructive and cost-effective in-situ technique for the clean-up of wasted oil polluted soils (sunflower). The experimental setup consisted of a strategy of treating polluted sites with Chromolaena odorata, Helianthus annuus, and a separate control in three locations. The randomised full block design was used to evaluate the concentrations of heavy metals such as Cu, Mn, Zn, Pb, Cd, and Fe in plant and soil samples (RCBD). The data was subjected to a one-way analysis of variance (ANOVA) and the Duncan's Multiple Range Test was employed to separate the means. In all of the experimental plots, the two plants thrived. However, Zn, Cu, Cd, Mn, Pb, and Fe levels in the soil were significantly reduced, and Chromolaena odorata absorbed substantial amounts of Pb, Cd, Cu, and Zn. There was also a large absorption of Fe and Mn by Helianthus annuus, but no matching absorption of Pb, Cd, Cu, or Zn. Chromolaena odorata absorbed significantly more heavy metal pollutants than Helianthus annuus (P = 0.05). The capacity of the two plants to absorb heavy metal pollutants in the soil was determined in this investigation. As a result, they are suitable for use in the cleanup of wasted oil-polluted soils.

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