Investigating the efficiency of Phytoremediation method in agricultural lands irrigated with Wastewater in the south of Tehran

to investigate the efficiency of Phytoremediation with sunflower corn and turnip, a study was conducted in 2016-2017 in agricultural lands in the south of Tehran using a complete randomized block design. Cadmium was present in all three parts of the leaves stems and sunflower seeds. the highest concentrations were observed in the leaves (0.54 mg / kg dry matter). The highest levels of iron uptake were in all three sunflower corn and turnip plants in the root zone, and its concentration in the root was significantly higher than in other parts of the plant. Cadmium biomass in sunflower and corn was 0.59 and 0.12, respectively. The manganese transfer factor in sunflower, corn and turnip was 1.88, 1.30 and 2.30, respectively. Among the three studied plants, the transfer of zinc, manganese and copper elements in the sunflower plant was 4.99, 1.88 and 2.21 respectively, which indicates the strength of its Phytoremediation . In most cases, the concentration of elements in the aerial parts of the studied plants was sufficient, but the use of plants with high adsorption capacity at the same time with wastewater consumption prevents the accumulation of these elements in the soil and the product will be usable.