thanks keith, I'll look at Mikes page - j2forever is a remarkably useful sight... especially the library...
The catalyst, hm. People would say "the lye", and indeed the lye is >recoverable as a true catalyst should be. But it doesn't only act as >the transesterification catalyst, it also serves to neutralize FFAs, >why you need to titrate to calculate FFA levels so you can know how >much lye to use. Also, the methanol replaces the glycerides in the >molecule, and this methanol becomes part of the methyl esters >molecule and is not recoverable. But you also need excess methanol to >push the process towards completion - and this excess methanol is >recoverable and reusable, so in a sense it is also acting as a >catalyst. I think... no, a catalyst reduces the activation energy of a reaction... adding excess shifts the equilibrium point. ########## Paul van den Bergen #### # Gabrielle Harrison # #### # 848 High Street Rd #### # # Glen Waverley VIC 3150 Australia # ###### [EMAIL PROTECTED] # # ph/fax. +613 9886 3160 ##### ------------------------ Yahoo! Groups Sponsor ---------------------~--> Rent DVDs from home. Over 14,500 titles. Free Shipping & No Late Fees. Try Netflix for FREE! http://us.click.yahoo.com/BVVfoB/hP.FAA/uetFAA/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/
