>Don't ya just love these newbie questions? I don't mind, I'm sure nobody minds... Better than not asking them. Feel free.
>Ok, the info on titration >at journeytoforever talks about 1 gr lye in deionized water (1 >liter). See also: Better titration http://journeytoforever.org/biodiesel_make2.html#bettertitrate >One thing I've not seen posted is if the standard 1.4 rule applies >here as well for potassium hydroxide, as in 1.4gr potassium >hydroxide per 1 liter deionized water for titration ? More about lye http://journeytoforever.org/biodiesel_make2.html#lye KOH is not as strong as NaOH -- use 1.4 times as much KOH (actually 1.4025 times). Titration is the same, just use a 0.1% KOH solution instead of NaOH solution, and use 1 gm of KOH for every milliliter of 0.1% solution used in the titration. But instead of the basic 3.5 grams of NaOH lye per liter of oil, use 3.5 x 1.4 = 4.9 grams of KOH. So, if your titration was 5 ml, use 5 + 4.9 = 9.9 gm KOH per liter of oil. One more complication -- check the purity of your KOH, it's generally not as pure as NaOH. Anhydrous grade KOH flake is usually about 92%, sometimes less -- check the label. We use half-pearls assayed at 85%. Adjust the basic quantity accordingly: the basic 4.9 grams would be 5.8 (5.775) grams for 85% KOH, or 5.3 (5.33) grams for 92% KOH. KOH dissolves in methanol much more easily than NaOH does, and doesn't "clump" together as NaOH can do. --- Okay? There are two ways of doing it. You can do a KOH titration as above, or do an NaOH titration and then apply the conversion rate to get the right KOH quantity. I've done it both ways with exactly the same result. >I would think that it would, but not being sure I figured I'd look >silly by ansking rather than looking stupid for not :) :-) I think lots of list members have remarked that the only dumb question is the one you don't ask. >And Keith, thanks again for your heads up about washing the test >batch; that gets done first thing in the Am. >The seperated BD (pre-wash) is quite dark though, nothing near as >clear as the examples you linked to. It is almost as though they >tossed in a bunch of soya sauce at the last moment knowing I was >coming and wanting to play a funny on me :o)! Anyway, I'll give it a >plunge and see what develops. Hm, shouldn't be too dark. Is it brownish of reddish? Reddish could mean not very good completion. But you'll find out with the wash, and the wash test. Best wishes 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/
