On Wednesday 26 October 2011 21:54:47 Frank Shields wrote: > Because we 'make' more ash when we > change the cations into carbonates (increasing weight) during the > process. More cations from vegetative matter the more the problem. And > this quantity of ash is not what we are spreading on the field. Also > the carbon trapped in the ash (as CO3) is not included in the fixed > carbon fraction - it should be because it comes from the organic carbon > in the raw sample.
Just picking up on one small point in your post: I infer that you are saying as the sample is heated to higher temperatures in the "ashing" process, to drive off remaining volatiles, carbonates form. In fact I suspect these are also a feature of chars from gasifiers. I don't think this carbon can count as recalcitrant as it will be gassed off as CO2 in acid conditions. AJH _______________________________________________ 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/
