Still in regard to FFA, I will be blending in some wvo to bring the levels down to a more managable level.
Would most appreciate any indication of maximum ffa level that could be handled by a 2-stage acid-base reaction, at standard pressure/60 degrees C (to minimise capital/running costs). Thanks, Mike Jureidini --- In [EMAIL PROTECTED], Michael Allen <[EMAIL PROTECTED]> wrote: > Hi David, > > [EMAIL PROTECTED] is running a research project > on transesterification of beef tallow. I'm not sure he > has heaps of results from his enzymatic process yet > but he certainly has references to all the literature > you need. (Mohammed is an Associate Professor of > Chemical Engineering at the University of Auckland in > New Zealand) > > We are making commercial quantities (1 tonne/day)of > biodiesel by transesterifying stearin from palm oil. > Indeed, one of the Thai railways routes from Hadyai to > Sungei Golok is using a B50 blend of our stuff with > petro diesel in their 150km run every day. > > At the moment I have built a 120 litre deep bed unit > for working on a crude palm oil feedstock with the > methoxide introduced at the bottom. We have lots of > stearin and palmitin (lard!) floating in the olein > liquid (and large amounts of free fatty acids) so we > have to run the reactor at 60C. This temperature is > close enough to the boiling point of methanol that we > have to recover the excess methanol to make the > process economic. > > I imagine you would have to do the same with lard. > > Lots of luck > > Michael Allen > Visiting Professor > Prince of Songkla University > Thailand > --- David Teal <[EMAIL PROTECTED]> wrote: > > In Scotland, chip shops use lard (animal fat). Last > > week I took a quantity > > of such material and tried (admittedly without much > > confidence) using the > > same procedure as for WVO (2 stage base). Nothing > > doing, as expected. I > > was hoping Aleks' acid/base method would be the > > answer, but from Todd's > > reply we might need HTP. Any experience with lard > > anyone? > > > > David T. > > > > > > > __________________________________________________ > Do You Yahoo!? > HotJobs - Search Thousands of New Jobs > http://www.hotjobs.com ------------------------ Yahoo! Groups Sponsor ---------------------~--> 4 DVDs Free +s&p Join Now http://us.click.yahoo.com/pt6YBB/NXiEAA/mG3HAA/9bTolB/TM ---------------------------------------------------------------------~-> Biofuels at Journey to Forever http://journeytoforever.org/biofuel.html Biofuel at WebConX http://www.webconx.dns2go.com/2000/biofuel/biofuel.htm List messages are archived at the Info-Archive at NNYTech: http://archive.nnytech.net/ 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/
