oops, I meant 3 - 10 distillations, and then a couple of filtration steps. I got my protocol by studying whiskey makers and then copying their methods.
-----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of Erin Rasmussen Sent: Thursday, September 20, 2012 5:12 PM To: 'Discussion of biomass cooking stoves' Subject: Re: [Stoves] FW: pot skirt efficiency estimates, scale-up I've used biochar to filter distillate, it works very well at removing impurities from ethanol. :-) It's terrible for regular wine making, as it also tends to remove color and flavor components. I mainly used wood char (biochar) for filtering. Good distillers do between 3- 10 passes through the filters. Particle size matters, but not as much you'd think. cheers, Erin Rasmussen [email protected] -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of Frank Shields Sent: Wednesday, September 19, 2012 1:04 PM To: 'Discussion of biomass cooking stoves' Subject: Re: [Stoves] FW: pot skirt efficiency estimates, scale-up Now I'm wondering about biochar with a high activity level. -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of [email protected] Sent: Wednesday, September 19, 2012 12:16 PM To: Discussion of biomass cooking stoves Subject: Re: [Stoves] FW: pot skirt efficiency estimates, scale-up [Default] On Wed, 19 Sep 2012 09:23:04 -0700,"Frank Shields" <[email protected]> wrote: >Hi All, > > > >I've done this type of test a lot in the past. I don't think you can >get better than 95% ethanol via distilling even with the right >glassware to separate out the fractions. Yes that's what's known as the constant boiling mixture, technically it means the distillate is an azeotrope. >In the past we used sodium metal to remove water from solvents >(benzene) and think it might work for ethanol. Not sure I would try it >as those were the 'exciting' days in the lab. There must be better methods. I've never tried it but the distillate can be dried by passing it through corn grits?? split cereal grains that have been dried at above 100C, they absorb the water and pass most of the alcohol 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/ _______________________________________________ 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/ _______________________________________________ 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/ _______________________________________________ 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/
