Phytoremediation of polluted soils in Songun copper mine

Mohammadhosein Lotfi¹ Omid Fathizadeh²

1) MSc student
2) Assistant Professor

IOI Code : AZAA-AZDKAK
Publication : 1ST International Congress of Nature-based Ecological Restoration (Emphasizing the Conservation of Bactrian Camels)(neruma.ir)
Abstract :
    Abstract Mining is one of the potential sources of metals entering the environment. One of the most important adverse environmental effects caused by mining is the destruction of the mining area resulting from extractive activities and the impact on the region s ecosystem. The extent of lands affected by mining activities, especially the waste accumulation places, is increasing day by day. which, in case of lack of proper management or accumulation in the open space, are easily affected by wind or water erosion, and as a result, they introduce metallic and even non-metallic pollutants into the surrounding environment. Environmental pollution with heavy metals is one of the concerns of today s era. The toxicity of heavy metals and their accumulation in food chains is one of the main environmental and health problems of modern societies. Although it is possible to remediate soils contaminated with heavy metals using chemical, physical, or biological techniques, physical and chemical methods of remediating areas contaminated with heavy metals are costly, time-consuming, and destructive to the environment. Therefore, in recent years, scientists and engineers tried to design and develop biological techniques that can clean and modify places contaminated with heavy metals without having adverse effects on soil fertility and biological diversity. Today, identification of pollution-resistant plants is very important because one of its applications is planting in polluted and industrial places to clean the environment. The field of phytoremediation technology is a stable, inexpensive and environmentally friendly process that provides the combined use of plants and microorganisms for the remediation of contaminated substrates. phytoremediation is very pleasant due to the use of plants in terms of beauty. Among the various methods of phytoremediation, three methods of plant stabilization, extraction and sublimation are used to purify soils contaminated with heavy metals. In the Phytoextracton method, the bioaccumulation index is used, which is obtained by dividing the heavy metal concentration in the leaves of the tree by the concentration of the same metal in the soil under the tree. If the resulting number is above one, it indicates that the tree is Hyperaccumulator.

Keywords : arasbaran forest heavy metals phytoremediation songun copper mine