In this study, the ability of J. curcas in the
extraction of Lead (Pb) and Copper (Cu) from soils
irrigated with municipal waste water was investigated.
The seeds of J. curcas were planted in pots containing
soil (1kg) obtained from vegetable garden irrigated with
municipal waste water. Due to the limited availability of
some metals to plants, chelating agents such as ethylene
diamine tetra acetic acid (EDTA) was applied to the soil
to facilitate the solubilisation and transport of these
metals to the plant roots. EDTA (5ml, 0.1mmol) was
added on the 10th, 11th and 12th week. In the control,
EDTA was not added and all the plants were harvested
after 13 weeks of planting. The average number of leaves
and shoot heights of the plants were recorded. Pb and
Cu contents in the roots and shoots of the plants in
EDTA treated soil and control were analyzed using
Microwave plasma atomic emission spectrophotometer
(MP- AES). The results obtained showed that the
application of EDTA increased (P < 0.05) the average
number of leaves and shoot heights of J. curcas when
compared to control. The results obtained also showed
that EDTA increased (P < 0.05) the uptake of metals in
the tissues of the plant when compared to control.
Phytoextraction ability was assessed in terms of bio
concentration factor (BCF) and transfer factor (TF).
Based on the TF and BCF values, J. curcas can be used
as a good candidate for the removal of Pb and Cu in the
Keywords : Phytoremediation, Municipal Waste Water, Vegetable Garden, Edta.