Phytoremediation capabilities of eight wild plants in absorption of three heavy metals (Al, Pb and Zn) in Meyghan Wetland

Abstract

Abstract Phytoremediation plant is one of the proposed methods that by accumulating heavy metals in the aerial parts of plants, it is possible to remove these elements from contaminated soils. The aim of this study was to investigate the situation of removal of three heavy metals, Al, Pb and Zn in the soil based on 8 plant species in Meyghan wetland in Markazi province, Iran. One-way analysis of variance (ANOVA) was used to investigate the difference between of heavy elements in the aerial parts, roots of plant species and soil. The results showed that there were significant difference in the contaminants of Al, Pb and Zn in the aerial, root organs of plant and soil. The results of the study of Al changes in the soil and the studied species showed that the amount of this element in the soil is very high and the studied plants do not have the high adsorption capacity of this element. The results of a study of the amount of Pb in aerial parts and roots of plant species showed that the amount of this metal in aerial parts is higher than the root and Halocenemum Strobilaceum has the highest rate of Pb contaminants (0.82 mg/cm3) among the studied species. The results of Zn change in aerial and root limbs showed that the amount of Zn metal contaminants in aerial organs was higher than the root, and Scirpus lacustris (2.14 mg/cm3) had the highest total absorption rate among the species studied.