PHYTOREMEDIATION OF COPPER, ZINC, LEAD AND MANGANES FROM CONTAMINATED SOIL USING HIBISCUS SABDARIFA PLANT

S.T.Magili¹  C.George¹ Y.K.Musa¹ D.Y.Shingu¹

Department of Chemistry, Adamawa State University, Mubi, Nigeria.

email:smagilli@yahoo.com.

ABSTRACT

Bioaccumulation of heavy metals was studied using Hibiscus sabdarifa plant in a green house to investigate the absorption of copper (Cu), Lead (Pb) Zinc (Zn) and manganese (Mn) on a contaminated soil. Garden healthy soil samples were contaminated with various concentrations of these metals and H.Sabdarifa plant were grown on it in a pot for a period of 60 days. The roots and shoots organ of the plants were harvested and the samples were prepared and analyzed using Atomic Absorption spectrophotometer (AAS) in order to find out their phytoremediation potential. Result showed that heavy metal content in the plant tissue; roots stem and leaves were as follows: Cu1.00, 0.70, 0.60, (mg/kg), Zn, 5.2, 4.2, 2.00 (mg/kg),Pb  0.9,0.6, 0.5, (mg/kg),and Mn 1.50, 0.20 0.10 ( mg/kg) respectively. All the metals tend to accumulate mostly on the roots, stems and leaves and therefore decrease transfer probability to secondary consumers. Also the concentrations of heavy metals in the control samples were analyzed and compared. The results suggest that H. Sabdarifa plant could be used for the phytoremediation of copper, zinc, lead and manganese.

Keywords: Hibiscus sabdarifa,heavy metals,bioaccumulation phytoremediation