Comment by andrewflnr

5 hours ago

That just gives you radioactive bacteria who might crawl around a bit and spread the radioactivity. You can't get rid of a nuclear problem by chemistry.

You are correct, of course, but in a sci-fi scenario maybe you could have a colony of fungi that move nuclear material around internally to keep it 'hot', thus 'burn it off' faster to extract energy. It might collect material from a wide area.