How about: Hydrogen fluoride. I know there are acidophiles but a concentrated HF solution in water has a H0 of up to -11, surely no membrane (made of proteins) can survive that?
Of course, the hard part is discovering the exact microbe that eats a given compound and publishing/finding an exact paper on it, not naming compounds.
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Geobacter, Geothrix and Dyella species, as well as a novel—potentially predatory—Bacteroidetes species, and a new member of class Anaerolineae (Chloroflexi). Additionally, a population of methanogenic Methanocella species. [0]
I guess you meant Aqua Regia? Not at all well versed in biology, but that seems less of a challenge than the other materials proposed (heavy metals, etc).
Aqua Regia is a mixture of Nitric Acid and Hydrochloric Acid. At least the first seems easy enough to digest and obtain energy from.
Yes, it is very acidic (ph 0 - 1) but so is your stomache (ph 1.5 - 3.5) and plenty of bacteria survive in that.
Couldn't find a specific species on google though =)
ph is a logarithmic scale so the difference between ph ~0 and ph 3 is of 3 orders of magnitude (or something like that. My maths is rubbish...). it can dissolve noble metals so I doubt anything living can survive it. But once diluted, some extremophiles may be live off it. while googling found this interesting article
Not a biologist. far outside of my expertise.
Random human, there must be a zillion. E. Coli?
I suspect, but do not know, there are tons of human eating bacteria.
Formaldehyde.