Dear Friends >> RWL: I am sure this IBI guideline refers to everything in the >> "representative" char sample that one has been unable to remove by >> raising a 1 gram sample to 950C for a specified time period. But the >> detail is even more specific than that - including particle size >> distribution for the test.
>Tom Miles has also raised the concern that this may limit what biochar can be made from and then used. >From anything I can find it matters a lot that there is something other than pure carbon and ash in the char. Perhaps the studies of applications will point out what the preferred composition is. Clearly there will be at least some volatiles in it. This may be helpful. https://s3.amazonaws.com/soilquality-production/fact_sheets/4/original/Biol_ -_Labile_Carbon.pdf >Having attended two biochar meetings I have seen the references to these graphene like structure in secondary pyrolysis reactions as temperatures increased ( and means of detecting their presence by nuclear resonance and diffraction). What isn't clear to me yet is how these micro scale particles electrical properties will contribute to the biochar. Very interesting. Perhaps there is a happy mix of chars that brings even greater benefit. Regards Crispin _______________________________________________ Stoves mailing list to Send a Message to the list, use the email address [email protected] to UNSUBSCRIBE or Change your List Settings use the web page http://lists.bioenergylists.org/mailman/listinfo/stoves_lists.bioenergylists.org for more Biomass Cooking Stoves, News and Information see our web site: http://www.bioenergylists.org/
