>--- In biofuel@yahoogroups.com, Keith Addison <[EMAIL PROTECTED] > >Glycerol remix is a University Of Idaho invention I believe.
Hm, you're right, or at least the add-water version is, or might be. I keep forgetting about it, which is odd, considering it's been on our website for three years, ever since the University of Idaho dropped it from their site. It's the ethanol method: http://journeytoforever.org/biofuel_library/ethyl_esters.html Ethyl Ester Process Optimization of a Batch Type Ethyl Ester Process Actually I don't think of it as a "glycerol remix" so much as a water mix. I tested it once a couple of years ago and found it didn't make any difference (in the archives somewhere). It says this: "Upon initial settling, some of the undesirable, emulsion-forming by-products may remain in the ester layer, causing problems in the washing stage. It was discovered (by tracking the process with a glycerol determination) that most of these products could be removed by simply restirring the glycerol into the ester, adding water and letting the mixture settle out again. After draining off the glycerol/water layer, the product (ethyl ester) can be easily water-washed to remove residual alcohol and potassium." I concluded it might be useful if you weren't getting good completion, probably because of the ethanol. I'm not too interested in "easier washing" anyway (nor is Aleks, nor is Todd) - look to your processing if you're having washing problems rather than sticking a band-aid on it. Ken doesn't seem to be looking for "easier washing" though, quicker maybe, and doesn't see it as getting round a completion problem: "... there's practically no alkali, no soap, and no alcohol left in it." Fair enough. Is that with ethyl esters Ken? Mark, how do you square this technique with what you were saying about having severe washing problems if you happened to get some glycerine by-product in the wash tank with the biodiesel? But you did say somewhere the glycerol remix doesn't work for you. Why not? What happens? Best Keith >mark > > > That comes from here: > > > > [... when the processing's finished] > > > > 17. Allow to settle for one hour. > > > > 18. Optional: For easier washing: Drain off the glycerine. >Measure > > off 25% of the total glycerine (including previously drained > > glycerine if you followed step 15) and mix with 10 milliliters of >10% > > phosphoric acid (H3PO4) for each litre of oil/fat processed. The > > mixing can be done with a wooden spoon in a plastic >container. Pour > > the acidified glycerine back into the reactor and stir for 20 > > minutes, unheated. Allow to settle for at least six hours and >then > > drain the glycerine fraction completely. > > > > http://journeytoforever.org/biodiesel_aleksnew.html > > Foolproof biodiesel process: Journey to Forever > > > > It's been there for a long time. > > > > Best > > > > Keith ------------------------ Yahoo! Groups Sponsor ---------------------~--> Buy Ink Cartridges or Refill Kits for your HP, Epson, Canon or Lexmark Printer at MyInks.com. Free s/h on orders $50 or more to the US & Canada. http://www.c1tracking.com/l.asp?cid=5511 http://us.click.yahoo.com/mOAaAA/3exGAA/qnsNAA/FGYolB/TM ---------------------------------------------------------------------~-> Biofuel at Journey to Forever: http://journeytoforever.org/biofuel.html Biofuels list archives: http://infoarchive.net/sgroup/biofuel/ Please do NOT send Unsubscribe messages to the list address. To unsubscribe, send an email to: [EMAIL PROTECTED] Yahoo! Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/biofuel/ <*> To unsubscribe from this group, send an email to: [EMAIL PROTECTED] <*> Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
