Cleaning Chernobyl

The April New Scientist reported that the US company Phytotech and the Ukrainian Academy of Agricultural Sciences continue to grow hemp in radioactive soil around Chernobyl.

After processing the plants, they obtained clean hemp fibre and plant remains rich in radioactive caesium. The contaminated remains are burned in a sealed incinerator that catches all the radioactive ash.

Unfortunately, this method seems only able to remove a small portion of the radioactive caesium, as much of it is tightly bound to soil particles.