Bacteria Want Vitamin B-12 Before They Eat Their Toxics
Environment News Service, June, 2007
ITHACA, New York (ENS) — --> Bacteria discovered in Ithaca sewage sludge by Cornell university professors 10 years ago are now in wide use to detoxify such carcinogenic chemicals as perchloroethylene (PCE) and trichloroethylene (TCE).
They do this by removing chlorine atoms from molecules and leaving less toxic compounds behind.
But the bacteria, Dehalococcoides ethenogenes, are picky about where they work - performing well at some sites and not so well at others - and nobody knows exactly why.
Cornell researchers are now attempting to improve conditions for the organisms to optimize their performance.
Normal laboratory procedures have not provided answers, because the bacteria are hard to grow in a petri dish, said Ruth Richardson, Cornell...
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