Abstract
Heavy metal polluted water is a great threat to sustainable marine, agriculture and environment. Plants can have the naturalability to absorb essential metals in its tissues from water solution, and this ability of plants can be advantage to extract trace metals from the polluted water. In this study, Cd(II) accumulation and distribution in the Tradescantia fluminensis were investigated, with a focus on the role of ethylenediaminetetracetic acid (EDTA) as a chelating agent in hydroponics. The results showed that in plant, EDTA, addition to media produced the highest major increase in Cd(II) accumulation but significantly decreased biomass of the plant. Also the Enrichment Coefficient (EC) and Translocation Factor (TF) values were calculated to evaluate the removal efficiency of the EDTA. Based on higher BCF (9.95±0.54-12.06±0.40) and TF (1.03±0.11-1.27±0.10) values, the high Cd(II) accumulation in the stems and leaves indicated that Tradescantia fluminensis has the potential of hyperaccumulation under EDTA enhanced treatments in removal for Cd(II) contaminated water.
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