Tom, Thank you very much for your comments. The IBI protocol was one of the issue that took my attention, that's why I tried to compare it with EBC. And as you rightly highlighted, it does not distinguish between gasification and pyrolysis but however, criteria used on both protocol, when evaluating biochar, are significantly the same in most of the items they have into consideration. Thanking you one more time.
Kindest regards. Oscar. -----Mensaje original----- De: Tom Miles [mailto:[email protected]] Enviado el: Friday, December 06, 2013 10:47 AM Para: [email protected]; 'Discussion of biomass pyrolysis and gasification' Asunto: RE: [Gasification] Precising biochar coming from pyrolizers vs gasifiers Oscar, Most of the biochar activity has emphasized pyrolysis char but we find that gasifier char works very well for soil improvement. In some cases it works much better than pyrolysis char. It has slightly different characteristics but in general can be used in the same way. Much of the small scale biochar that people are working with is made in top lit updraft gasifiers (TLUD) which is gasification, not pyrolysis. The IBI protocol does not distinguish between gasification and pyrolysis. The biochar must meet certain product characteristics. Tom -----Original Message----- From: Gasification [mailto:[email protected]] On Behalf Of Oscar Jimenez Sent: Friday, December 06, 2013 6:05 AM To: 'Discussion of biomass pyrolysis and gasification' Subject: Re: [Gasification] Precising biochar coming from pyrolizers vs gasifiers Dear All. I have just recently downloaded the " Guidelines European Biochar Certificate for a sustainable production of biochar" and soon I realized that the mentioned above guideline only recognize biochar, coming from pyrolizers, as the proper product for being used as a soil improver. The product coming from gasification does not seem to be valuable for such task. I tried to precise this issue and I found some general references but not too deeply sustained with testing methods etc, as is the case with European Certificate. So far it is not possible to seriously compare char coming from pyrolizers vs gasifier as a soil improver. Then as far as I understand only pyrolizer biochar is the only soil improver product to consider. Am I right...???. I would deeply appreciate comments guiding me on this issues. Thanking all of you in advance. Kindest regards. Oscar. -----Mensaje original----- De: Gasification [mailto:[email protected]] En nombre de Erin Rasmussen Enviado el: Wednesday, December 04, 2013 1:39 PM Para: 'Discussion of biomass pyrolysis and gasification' Asunto: Re: [Gasification] Bio-Char Hi Doug, I think one of the clearest papers on the soil properties of biochar and how it can work in soil systems is by Bruno Glaser and can be downloaded for free in pdf from the publisher: Daniel Fischer and Bruno Glaser (2012). Synergisms between Compost and Biochar for Sustainable Soil Amelioration, Management of Organic Waste, Dr. Sunil Kumar (Ed.), ISBN: 978-953-307-925-7, InTech, DOI: 10.5772/31200. Available from: http://www.intechopen.com/books/management-of-organic-waste/synergism-betwee n-biochar-and-compost-for-sustainable-soil-amelioration When we're talking about biochar with plants, we are generally talking about using biochar and compost together. Just as you wouldn't try to live on charcoal without food, you wouldn't want to feed your plants charcoal without providing a source of nutrition. So in that sense Tom is right, it does have the potential to tie up nutrients that are needed by plants. Dan is right too, sometimes the whole soil system works in ways that aren't predicted by chemical analysis. But the work done by soil scientists studying biochar in the last couple of years leads me to believe that the scientific community be able to understand these interactions well enough to be able to make reliable application information available to people that are interested in it. kind regards, Erin R. [email protected] -----Original Message----- From: Gasification [mailto:[email protected]] On Behalf Of Doug Sent: Wednesday, December 04, 2013 10:03 AM If what you say is correct, then I'd like to know why some charcoal can survive thousands of years close to the surface and not be totally consumed. Any further explanation regarding this area of interest I'm sure would be appreciated by those of us less informed. Doug Williams, Fluidyne. _______________________________________________ Gasification 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/gasification_lists.bioenerg ylists.org for more Gasifiers, News and Information see our web site: http://gasifiers.bioenergylists.org/ _______________________________________________ Gasification 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/gasification_lists.bioenerg ylists.org for more Gasifiers, News and Information see our web site: http://gasifiers.bioenergylists.org/ _______________________________________________ Gasification 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/gasification_lists.bioenergylists.org for more Gasifiers, News and Information see our web site: http://gasifiers.bioenergylists.org/
