They then replace the chlorine with an oxygen and hydrogen group, which destabilises the molecule and makes it more likely for the fluorine bond to break.īreaking down chlorinated PFAS wouldn’t do anything to address the contamination from many other types of PFAS that don’t contain chlorine. Instead, they cleave the weaker bonds between carbon and chlorine. The bacteria don’t break the tough carbon-fluorine bond directly, says Men. Similar microbes could already be breaking down chlorinated PFAS contamination, she says. Their genomes were most similar to Desulfovibrio aminophilus and Sporomusa sphaeroides, bacterial species commonly found in water environments. The researchers isolated the bacteria responsible for breaking down the molecules in anaerobic conditions.
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