Jim, Phosphoric would be used as a wash neutralizer and a precipitator when recovering the base from the glycerin.
I tend to believe that Aleks is correct when he says that phosphoric won't work in the acid stage. My first guess on the matter is that the sulfuric in concentrated form of 95%-98% has less water than the 85% phosphoric which is most common. By introducing less water, there will inevitably be less soap creation, erego higher yields using one over the other. But the thought of precipitating out the caustic prior to composting is of great value, with the water soluble fertilizer being useable in a yard or field environment. Now, if someone would just design a rather cost effective, simple and "Underwriters Laboratories" safe, shadetree thin film evaporation/distillation unit to recover the methanol, homebrew will have closed the loop in the waste stream. Todd Swearingen ----- Original Message ----- From: jmwelter <[EMAIL PROTECTED]> To: <biofuel@yahoogroups.com> Sent: Monday, April 29, 2002 11:39 AM Subject: [biofuel] acid catalyzed ... cont... > I was going to mention it, but the idea of using KOH for a base > catalyst and phosphoric acid as the acid catalyst means that you have > K3PO4 which is fertilizer and since it would be in aqueous form mixed > with the glycerol/water layers, you could make compost with grass > clippings, etc... who knows? > > > Biofuel at Journey to Forever: > http://journeytoforever.org/biofuel.html > Please do NOT send "unsubscribe" messages to the list address. > To unsubscribe, send an email to: > [EMAIL PROTECTED] > > Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service. > > ------------------------ Yahoo! Groups Sponsor ---------------------~--> Buy Stock for $4 and no minimums. FREE Money 2002. http://us.click.yahoo.com/orkH0C/n97DAA/ySSFAA/FGYolB/TM ---------------------------------------------------------------------~-> Biofuel at Journey to Forever: http://journeytoforever.org/biofuel.html Please do NOT send "unsubscribe" messages to the list address. To unsubscribe, send an email to: [EMAIL PROTECTED] Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/
