A total lie right here. Deuterium/tritium is NOT clean it produces an extra neutron that goes on to transmute all sorts of nasty isotopes in the surrounding structure.
I can't remember off hand, but I think you're right. Its something to do with the lithium neutron-catching outerlininh being turned into poisonous Beryllium. Some Freeper no doubt can chime in here.
Anyway: good luck to the Chinese if they can get this working.
"Li + n 4He + T"
"The lithium absorbs the neutron and generates a tritium while releasing a bit more energy in the process. There is plenty of lithium available in nature.
However, the neutron problem is not totally eliminated through the above solution. Not all neutrons will fuse with the lithium, and instead fuse with other parts of the reactor, possibly inducing radioactivity. Neutron multipliers may be used in a reactor to compensate for this neutron loss, or reactions that yield more neutrons might be implimented, such as 7Li + n 4He + T + n. As for limiting the amount of high-level nuclear waste, careful selection of the materials used are expected to minimize the handling and disposal of such radioactive material. For example, the development of advanced, low-activation materials (like vanadium-based materials), or through the use of neutron-free reactions, could be implimented in future reactors."
http://library.thinkquest.org/17940/texts/fusion_dt/fusion_dt.html
Pinging.
Yeah, but that's STILL relatively clean compared to the amount of radioactives generated by the fission process. Not that that amount of radioactivity (from fission) is an insurmountable problem--I'm all for starting a breeder/burner fission energy cycle ASAP.