A bacteria found deep under the Pacific Ocean can prove to be highly effective in cleaning up heavy metal pollution, scientists have revealed.
The bacteria, a particular strain of Brachybacterium, strain Mn32, was described by Professor Gejiao Wang and his colleagues from Huazhong Agricultural University in Wuhan, China.
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Not only did the bacterium directly oxidize the manganese, but the resulting oxides themselves also absorbed the metal from the culture solution, making Brachybacterium sp Mn32 a potentially useful candidate for use in bioremediation and cleaning up pollution.
As well as removing manganese from its environment, the Brachybacterium also absorbed significant amounts of zinc and nickel.
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Manganese oxides can be manufactured chemically and are known to absorb zinc and nickel; but the oxides produced by this bacterium absorbed two- to three- times more metal.
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According to Professor Wang, "The next stage of our research is to immobilize this bacterial strain into a bioreactor to test its ability to remove manganese and other heavy metals in such a system. If successful, it could provide a more efficient way to clean up heavy metal pollutants."
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