Hi Todd, Thanks for the advice. I actually was in error regarding the separation time, it's more like 10 to 15 minutes. Sorry about that, I did not have enough coffee in my system & I made that error. As to the washings, the ones in question were only a couple of hours in duration. The most recent batch only took 4. The first wash was with a little vinegar in the water which I let go for about 6 hours. The last 3 washings last no less than 24 hours each. I got clear water on the 3rd & ran a 4th wash just to be certain. No harm in erring on the side of caution. The current 7 litre batch is questionable, so I would feel better about reprocessing it, but I'm unsure if it needs a full reprocessing or just the 2nd Stage. The "Brunette" stock comes from a Long John Silver's near where I work. The oil / shortening mix is dark amber with a slight tinge of orange & I'm sure it's heavily used. Thanks again. Sincerely, Gregg
Appal Energy <[EMAIL PROTECTED]> wrote: Gregg, Fuel from shortening makes perfectly fine biodiesel. Actually it makes fuel of higher energy content than other less saturated feedstocks. If the water wash test is taking half of one hour to split, you've got an incomplete reaction. Draw off 200 ml of what you believe to be biodiesel and reprocess it to see if more glyc drops.. Also, if it's taking four or five washes before you get a clean rinse, something is amiss. As for the colour of the fuel, that is largely determined by the degree that the parent stock was abused. While the fuel colour will be considerably lighter than the parent stock when finished, you'll never get "blonde" fuel out of "brunette" oil. Todd Swearingen ----- Original Message ----- From: "gregg2560" <[EMAIL PROTECTED]> To: <biofuel@yahoogroups.com> Sent: Friday, August 06, 2004 8:16 AM Subject: [biofuel] Colour of latest batch > Hi All, > > I'm at a bit of a loss regarding the colour of my latest batch of > biodiesel. It is a medium amber rather than pale straw yellow. This > particular batch went through about 8 washes. The water in the first > one or two was quite milky as expected, & washes 3 - 6 got > increasingly clear, the last 2 looked like clean water. I checked > the pH & it was 6.8 to 7.2. I also did the shake test, the BD & > water separated within 30 - 45 minutes. The only thing I can think > of is that this batch was made from vegetable shortening rather than > oil. I'm wondering if maybe I should run it back through the process > (Aleks Kac Method). > > As always, any help, advice, or suggestions are appreciated. > > Sincerely, > Gregg Davidson 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 SponsorADVERTISEMENT --------------------------------- 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 the Yahoo! Terms of Service. --------------------------------- Do you Yahoo!? New and Improved Yahoo! Mail - 100MB free storage! [Non-text portions of this message have been removed] ------------------------ Yahoo! Groups Sponsor --------------------~--> Yahoo! Domains - Claim yours for only $14.70 http://us.click.yahoo.com/Z1wmxD/DREIAA/yQLSAA/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/
