The Role of the Plants for the Removal of Heavy Metals around Industrial Plant

Due to increasing population and increasing organic and inorganic contaminants, it is essential to provide a reliable, low cost, and relatively quick method for removing contamination without any undesirable side effects for the environment. Phytoremediation is an appropriate way in this regard. This study aimed to determine the heavy metal accumulation capacity around the Iralko aluminum factory, located in Markazi (Iran) using plant Artemisia sieberi. This study employs a "factorial experiment” with completely randomized design under greenhouse conditions. It conducted four treatment plants, 3Repeat and 4 treatments of heavy metals (zinc, nickel and chromium) in control, which were 2.5,5 and 10 times more than average concentration of elements in soil to evaluate the phytoremediation methods and compare the estimated absorption in refining metals-contaminated soils. In this study the average concentration of Zink in soil is 107 mg/kg and the bioavailability is 0.4mg/kg which is more than other two metals. After analysis of plant tissues, results shows that the Zink has the highest concentration with 37.05% in leaves and then 37% in the stem of the plant. Considering the morphology terms and resistance to water shortages this plant is more efficient in absorption of zinc than absorption of Cr and Ni from the soil around the Iralko factory.