Malcolm said per the subject: "soybean oil press/extractor to process soybeans for bio-diesel": >I saw a web page a little while ago of two guys who claimed to be able to >extract the glycerin as a food quality product. As such it was said to be a >very valuable side product. This was obviously for commercial scale >production and what was involved I don't know.
Do you know what the URL was for that web site? I have recently looked into the process of purifying the crude glycerol, and it appears that the main steps would be 1) filtration, 2) vacuum evaporation/distillation. The equipment required to perform these steps needs to be appropriate per the high viscosity of glycerol, and would likely be much too expensive for the DIY'er. However, it might be practical for even a relatively small commercial biodiesel producer. Installing such equipment would require more capital plus a little more operational expertise, but it would convert process waste/expense into an additional product/profit. Perhaps the economics of this would yield a more favorable price for commercial biodiesel. A number of estimates for the cost of commercially produced biodiesel have been cited on this list. Does anyone know if the disposition of the crude glycerol byproduct was factored into any of these estimates, and what the rational was if so? -- ...Warren Rekow ------------------------ Yahoo! Groups Sponsor ---------------------~-~> Make good on the promise you made at graduation to keep in touch. Classmates.com has over 14 million registered high school alumni--chances are you'll find your friends! http://us.click.yahoo.com/l3joGB/DMUCAA/4ihDAA/FZTVlB/TM ---------------------------------------------------------------------_-> Biofuel at Journey to Forever: http://journeytoforever.org/biofuel.html To unsubscribe, send an email to: [EMAIL PROTECTED] Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/
