Abstract

 

Accepted 2nd March, 2019

 

Heavy metals are generally toxic to microorganisms, especially if they exist at high concentrations. Environmental pollution particularly in soil with heavy metals can stem from industrial activities or sewage discharges. In this study, Five different bacterial species Bacillus megaterium EMCC 1013, Rhizobium rhizogenes EMCC 1743, Rhizobium leguminosarum EMCC 1130, Azotobacter vinelandii and Nocardiopsis Dassenvillei were evaluated their potential activity in bioremediation of zinc ion. Our results showed that five bacterial species have great variation potential for zinc bioremediation. The aim of our study was to evaluation the bioremediation capacity of zinc as heavy metals by five different bacterial species with glucose and ammonium oxalate as carbon and nitrogen energy sources to use them in further study in removal of Zn(II) from plating waste water. This results is important  to be well understand the bioremediation  mechanism of Bacillus megaterium EMCC, and is significant for its pilot test and future practical application. In addition Bacillus megaterium EMCC as the most potent Zn (II) resistant microorganisms will very useful in biotechnology for the remediation of metal contaminated environments with Zn (II)and can also be used in the construction of biomarkers for the detection of zinc ions.

 

Keywords:Bioremediation, Bacillus megaterium, heavy metal, Zinc