biotech
Biomineralization of Gold By Bacteria
Filed in archive Energy, Environment and Ecology , Microbiology by ruth on August 3, 2006
Biomineralization of Gold By Bacteria
Using DNA profiling on gold grains collected from two gold mines in Australia, scientists have been able to single out a bacteria, Ralstonia metallidurans, that is capable of precipitating dissolved gold.
"By placing a culture of the R. metallidurans in the presence of dissolved gold, which is highly toxic to microorgansims, I observed active gold precipitation.

"A unique attribute of R. metallidurans is that it is able to survive in concentrations of gold that would kill most other micro-organisms."

As the scientists say, this present great potential in gold mining using bio-precipitation as a method to retirieve gold from solution. Their discoveries were published last month in Science.

[Photo: Bacterioform-gold1: Coloured scanning electron image of bacterioform gold on a gold grain from the Hit or Miss Mine in northern Queensland. courtesy of CSIRO]


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Tags: gold  mining  biotech  bacteria  biomineralization  biomineralization+gold  gold+bacteria  life+sciences 
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