Hello Ken, Charles et al. Ethanol can be somewhat tricky to deal with when it comes to producing biodiesel. The glycerine drop is related to the amount of ethyl esters that you have created during the process. This is suggesting that you will need a certain qty of ethyl esters produced in order to have a spontaneous glycerol drop. To make sure that you have a sufficient amount, the ethanol stochiometric surplus should be at least 75% or rather 100%. The stochiometric relationships are much more important than increasing of the reaction temperature, say 5 or 10 degrees. But also note that the ethanol inserted has to be anhydrous. Best of luck to you ! Jan Warnqvist AGERATEC AB
+ 46 554 201 89 +46 70 499 38 45 ----- Original Message ----- From: "Ken Provost" <[EMAIL PROTECTED]> To: <biofuel@sustainablelists.org> Sent: Tuesday, August 22, 2006 4:40 AM Subject: Re: [Biofuel] Ethanol use > > On Aug 21, 2006, at 1:57 PM, Charles List wrote: > > > > I would like to know, however, if I can increase the temperature > > of the reaction mixture to cut down the time taken for the reaction > > as ethanol boils at 78C rather than 65C..... > > > You probably could, but the separation of glycerol takes such a > long time with ethanol (hours maybe), and the reactants are all > in solution that whole time (completely clear, single phase), that > you probably don't need more than the usual heating to get the > reaction to go as far as it will. > > -K > > > > > _______________________________________________ > Biofuel mailing list > Biofuel@sustainablelists.org > http://sustainablelists.org/mailman/listinfo/biofuel_sustainablelists.org > > Biofuel at Journey to Forever: > http://journeytoforever.org/biofuel.html > > Search the combined Biofuel and Biofuels-biz list archives (50,000 messages): > http://www.mail-archive.com/biofuel@sustainablelists.org/ > > > _______________________________________________ Biofuel mailing list Biofuel@sustainablelists.org http://sustainablelists.org/mailman/listinfo/biofuel_sustainablelists.org Biofuel at Journey to Forever: http://journeytoforever.org/biofuel.html Search the combined Biofuel and Biofuels-biz list archives (50,000 messages): http://www.mail-archive.com/biofuel@sustainablelists.org/
