Ken, I noticed the 5:1 eth:meth ratio both on JTF and in your postings. Since your doing the "kicker" of meth after the initial reaction, might it just be better to up the meth in meth/eth oxide mix, to something like 3:1? How much meth are you adding in the kicker phase to the whole reaction? Also, are you using WVO or crude oil. I thought I remember a posting just recently that you had various drums of oil in your garage, and something about salad ..... ;-)
James Slayden On Wed, 15 Jan 2003, Ken Provost wrote: > Matt writes: > > >I have just tried to make a 1 litre batch of biodiesel using > >ethanol (200 proof IDAA denatured ) using the instructions > >on Journey to forever. I titrated the oil to 3.7g and used the > >recommended 7 g/l as a start point before titration. > > > Check those instructions again, Matt. Your oil is awfully high in > FFAs -- half your level is about the max I would ever attempt > with ethanol. Also, I'd strongly advise using KOH at 10g/l plus > titr. rather than NaOH at 7, especially for oil with over 1ml > titr. > > > > >I did ask myself why would you use 7 grams, when 3.5 is normal > >and the alcohol should make no real difference. > > > Methanol is more acidic (in alkaline conditions) than ethanol by > quite a bit. More concentrated alkali is required with ethanol in > order to "persuade" the ethanol to give up its H+ ion and form > an ethoxide ion. > > > >Anyway the predicatable happened, with 10.7 grams of Naoh and > >300 ml of ethanol I now have 1 litre of jelly. > > > Yup. Use cleaner oil and KOH. Check the instructions again. Try my > eth/meth mixture idea, as well as the "methanol kicker" after a couple > hours. I have pretty good luck these days starting with 5:1 eth:meth > and tossing in straight methoxide to initiate separation after the > initial partial reaction. It won't let you get away from methanol > entirely, but you use a lot less. -K > > Yahoo! Groups Sponsor > ADVERTISEMENT > HGTV Dream Home Giveaway > > Biofuel at Journey to Forever: > http://journeytoforever.org/biofuel.html > > Biofuels list archives: > http://archive.nnytech.net/ > > 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. > Biofuel at Journey to Forever: http://journeytoforever.org/biofuel.html Biofuels list archives: http://archive.nnytech.net/ 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/
