Introduction: Natural and human activities lead to soil degradation and soil salinization. In the last two centuries, world metal pollution level has increased extremely. The presence of some heavy metals in aquatic ecosystems is a constant threat to the health of human societies. The decrease of farmlands threatens food security. There are approximately one billion ha salt-affected soils all over of world, which can be utilizable after chemical, physical and biological remediation. Many mines in the world and also in Iran exist and as a result, soil erosion and dust release from waste dams is a matter of concern. Bioremediation using biological agents to detoxify and degradation of environmental pollutants provides a suitable alternative method for substitution of current heavy metals removal strategies. Material and methods:As a result of extraction operations by cyanidation in Mouteh gold mining complex, wastewater and waste soil sediment are widely achieved. In this study soil samples were collected from Mouteh Goldmine tailing dam soil in September 2018. The collected soil samples were cultured in BG11 medium and incubated for microalgae identification and biomass production. Also, 5 g soil was inoculated with 0.5 g biomass of cyanobacteria and the physicochemical characteristics of the soil including pH, Na, K, Pb, and Cd, before and after the inoculation of soil with cyanobacteria were determined. Results and discussion:In this study, cyanobacteria Phormidium tenue Gomont, Osillatoria tenuis C.Agardh ex Gomont, Lyngbya aestuarii Liebman ex Gomont and the green alga, Scenedesmus obliquus (Turpin) Kützing were identified. Culture results of filamentous cyanobacteria on goldmine tailing dam soil showed that
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