Decontamination of the soil polluted with Cadmium and Chromium by phytoremediation in Lepidum Sativum

The soil polluted with the heavy metals is a serious problem for the ecosystem and human health. Phytoremediation is an effective and economic strategy for removing toxic metals from the soil. The present experiment was conducted in pot culture using completely randomized design with different levels of Cadmium (CdCl2.H2O) concentrations including 0, 5, 50, 100 mg kg-1 and also chromium (CrCl3) concentrations (i.e. 0, 50, 100, 150 mg kg-1) with three replications. The results indicated that an increase in Cadmium and Chrome concentrations of the soil increases the concentration of Cadmium in Lepidum Sativum shoots and Chrome concentration was reduced (P<0.01). Hence, Lepidum Sativum species is appropriate for Cadmium and Chromium absorption in phytoremediation strategy, but it is not recommended for high soil Chrome concentrations.