Mikmaw said "80 tonnes of hydrogen comes from 250 tonnes of...

Mikmaw said "80 tonnes of hydrogen comes from 250 tonnes of carbon nano fibres which is enough to run 50 buses for a year?"

Sorry to burst the hydrogen bubble but consumption of hydrogen per year in a bus is more likely to be 10-12 tonnes per bus per year.

See for example section 4.4.5 at http://www3.imperial.ac.uk/pls/portallive/docs/1/7305699.PDF It's a 'dated' study (sorry I haven't got time to spend on more references) but it confirms some figures I did a while ago (when I did have time)- that EDE's pyrolysis reactors were producing miniscule amounts of hydrogen. In order to get scale for a modest city fleet of hundreds of buses EDE would be buried in carbon soot with no market.

Believe that the nano-products will revolutionise concrete perhaps,
but be careful about all the hydrogen talk.... - happy to be challenged!