Abstract

A large family of bacteria is Cyanobacteria which have a large variety of types and have been found in various habitats. Heavy metals such as copper, lead and zinc-as a large group of elements are considered as toxic factors present in such environment as wastewater and soil. Some bacteria, Cyanobacteria for example, have the ability to remove heavy metals. The purpose of this study is isolation and identification of new species of thermophilic Cyanobacteria and investigating its ability to remove heavy metals. First, the collected samples were inoculated into BG11 broth medium. Then the masses were transferred to the BG11 agar medium and were incubated for 8-10 days. Finally, molecular diagnosis 16s RNA was developed on the colonies. Thermophilic Cyanobacteria were inoculated in medium containing copper, lead and zinc; results were calculated by atomic adsorption. In this study, we succeeded in isolating unculturable of thermophilic Cyanobacteria EBLI1 (89.2) that was morphologically similar to oscillatoria and lyngbia. Cyanobacteri have also been identified as capable of elimination of 2.5 zinc, 13.5 copper and 27 lead from the media. This paper studies the bioremediation of copper (Cu), plumb (Pb) and Zinc (Zn) at different concentrations and under different conditions by Bacteria. The study has proved that heavy metals such as zinc, copper and lead are not toxic for Cyanobacteria, but they can reduce GT time bacteria.