Recombinant bacterium capable of removing mercury (II) species, cadmium (II) and copper (II) in presence of other heavy metals from polluted sites, product for the bioremediation, process of obtaining the product and method of bioremediation

A method for bioremediation of a mercury (II) species-contaminated environment, comprising:

• a) adding a bacterial inoculum comprising Cupriavidus metallidurans strain MSR33, deposited under accession number NRRL B-502099, to said mercury (II) species-contaminated environment in presence of sodium or potassium thioglycolate, wherein said Cupriavidus metallidurans strain MSR33, NRRL B-50299 is capable of removing mercury (II) species from said contaminated environment and said bacterial inoculum comprises an effective amount of said Cupriavidus metallidurans strain MSR33, NRRL B-502 for removing mercury (II) species from said contaminated environment, and
• b) incubating said bacterial inoculum in said contaminated environment for a period of time ranging from 1 hour to 4 weeks remove mercury (II) species from said contaminated environment.

A method for bioremediation of a cadmium-contaminated environments, comprising:

• a) adding a bacterial inoculum comprising Cupriavidus metallidurans strain MSR33, deposited under accession number NRRL B-502099, to the to the cadmium-contaminated environments wherein said Cupriavidus metallidurans strain MSR33, NRRL B-50299 is capable of removing cadmium from said contaminated environment and said bacterial inoculum comprises an effective amount of said Cupriavidus metallidurans strain MSR33, NRRL B-502 for removing cadmium from said contaminated environment, and
• b) incubating said bacterial inoculum in said contaminated environment for a period of time ranged from 1 hour to 4 weeks to remove cadmium from said contaminated environment.

A method for bioremediation of a copper-contaminated environments, comprising:

• a) adding a bacterial inoculum comprising Cupriavidus metallidurans strain MSR33, deposited under accession number NRRL B-502099, to said copper-contaminated environment, wherein said Cupriavidus metallidurans strain MSR33, NRRL B-50299 is capable of removing copper from said contaminated environment and said bacterial inoculum comprises an effective amount of said Cupriavidus metallidurans strain MSR33, NRRL B-502 for removing copper from said contaminated environment, and
• b) incubating said bacterial inoculum in said contaminated environment for a period of time ranging from 1 hour to 4 weeks to remove copper from said contaminated environment.