Phytoremediation of cadmium-contaminated soil by Brassica species
2001
Ahmed, K.S. | Panwar, B.S. | Gupta, S.P.
Phytoremediation is a green technology for the sustainable remediation of surface soils contaminated with toxic heavy metals. When added to soils the chelating agent ethylenediamine tetraacetic acid (EDTA) increased the solubility of heavy elements for plant uptake during phytoremediation. A greenhouse experiment was carried out with two Brassica species (Brassica juncea and Brassica carinata) grown on artificially contaminated soil with EDTA added at a rate of 1 g/kg soil. With increasing Cd contamination the biomass of both the Brassica species decreased. However, Brassica juncea was more tolerant of high levels of Cd in the soil in comparison to B.carinata. The results indicated that EDTA made the cadmium more available to the plants and lowered the Cd content of soil.
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