on 6/22/03 1:36 PM, Pieter Koole at [EMAIL PROTECTED] wrote: > Hello, > I am still trying to separate glycerin and FFA's, but > it does not work. > Now I used ¸ liter of the bottom layer ( from the very > bottom of the vessel ) and ¸ liter ( not ¸ ml. but ¸ liter ! ) > sulphuric acid ( 98% ) and all that happens : no separation.
Wow! Pi liters! I could never measure that close... :-) > What I see after several hours, is a top layer which > is about ² of the sample. This top layer is slightly > lighter in colour than the bottom layer, which is really > dark / black. I suspect the top layer is FFA and the bottom is glycerine. (The FFA layer might even be sort of "reddish". It's also known as "red oil".) You're using way to much H2SO4. A good way to see the FFA's clearly is to dilute a small amount (maybe 100 l) of the glycerine layer into a liter of water, so the dark color of the glycerine is completely lost. Then add H2SO4 just 10 ml at a time, stirring 5 minutes each time, until a dark red layer of FFA starts separating out in globules. Let it sit a couple hours and all the FFA will be floating on top. Smells weird..... -K ------------------------ Yahoo! Groups Sponsor ---------------------~--> Get A Free Psychic Reading! Your Online Answer To Life's Important Questions. http://us.click.yahoo.com/Lj3uPC/Me7FAA/ySSFAA/FGYolB/TM ---------------------------------------------------------------------~-> 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/
