I've given this one some pondering, I don't know if serious is the word for it. Cleaning up catastrophic nuclear and toxic waste sites are not within my realm of
experience.
But...
Some species bio-accumulate more than others right? I mean plants, fungi, animals - all of um right? And certain areas tend to accumulate of than other often times right?
For example
gomphidius glutinosus. according to a Table found on page 106 of Mycellium Running accumulates radioactive cesium at a concentration factor of 10000 times. That's pretty effective. I am not familiar with this
mushroom or what its habitats are. But for the sake of discussion lets say there is likely a primary decomposer out there which concentrates at 100x. Lets also - for the sake of discussion - say that wheatstraw, bracken fern, or some other stupidly easy crop concentrates at 5x. Now we are talking about elements her right? In the case of radiation. And molecules in the case of the 'clean up' gick. So Ideally we could probably crop something, in the case of something succulent like horse tail or bracken fern, puree it, centrifuge the slurry mix with
carbon, a compost with mushroom, slurry/centrifuge. And from there start building a food chain on up - test the ducks livers and whatnot and see how its working.
If you could somehow include hot compost or fermentation in the process at some stage you could likely capture
energy with which to possible offset the use of the centrifuge - which is a total wingnut Idea to begin with.
I'll give the article a look.