Thanks, Jed. They are doing probably the best work of anybody. Here is a good forum thread, including some questions I asked (I'm "dacroz")http://www.gekgasifier.com/forums/showt ... 5#post1645
Bottom line, the whole topic turns out to be vastly more complicated than I (and, from much of the naive stuff I find on the internet, many others) had realized. After spending half a day with Andy Soria, wood chemistry professor at UAF
, I've put my biochar producing, modified barrel-stove project on hold.
Acccording to Andy, what makes biochar isn't just charcoal per se, but it's chemical composition which depends a lot on feedstock, temperature, pressure and residence time. You can't have a system optimized to produce both fuel gas and