><unsnip from previous> > > By using one step simultaneous extraction and > >esterification , the patented process use crushed seeds to make > >four products , the BioD , the glycerol , the protein, carbohydrate > >that seem to deintoxicated for animal feed is now being scaled up > >to big pilot plant. > ></unsnip> > >I interpreted this to mean that the crushed seeds are subjected to the >alkali catalyst/methanol hence the seedcake is exposed to the reaction. > I've seen papers other papers discuss simultaneous extraction/reaction >with soya bean flakes. the problem was that much more methanol is need >to extract the oil during the processing into biodiesel, partly due to >the moisture content of the beans.
I'm sure you're right Bob, I have several of those papers. Good explanation, sorry I didn't get it first time. I was looking at other information to check where the ricin was. Thanks! Keith >Keith Addison wrote: > >> Ricin is a protein which would be denatured by the reaction conditions. > >> Denaturation just means changing the shape of the protein, thus > >> inactivating it. Same as hard boiling an egg more or less. > > > > Thanks Bob. But I think the ricin doesn't get into the oil, it's in > > the husk, and thus in the seedcake. > > > > I see James Duke says: "Although it is highly toxic due to the ricin, > > a method of detoxicating the meal has now been found, so that it can > > safely be fed to livestock." > > Ricinus communis, "Handbook of Energy Crops", James A. Duke, 1983 > > http://www.hort.purdue.edu/newcrop/duke_energy/Ricinus_communis.html > > > > Maybe they just hard-boil the seedcake. > > > > <snip> > > > > Re the high viscosity: > > > >>>> Brazil has 20 years of good research reports about castor oil use > >>>> as biofuel , which we have the acess .One main problem with castor > >>>> oil BioD is the viscosity that can be easily solved. > >>> That seems to be the main problem. Castor oil is 100 times more > >>> viscous than petro-diesel. Castor oil biodiesel is less viscous than > >>> the straight oil, but several references say it is still higher than > >>> the national standards specification limits. If there is an easy way > >>> to make it less viscous or to solve the problem that would be > >>> valuable to know. > >>> > >>> Do you have any further information on this? > >>> > >>> This is quite interesting on how castor oil works as a lubricant and > >>> why it's different to other oils: > >>> http://www.georgiacombat.com/CASTOR_OIL.htm > >>> CASTOR OIL > > > > Castor oil has good lubricity, I wonder if castor oil biodiesel have > > better lubricity than others. Maybe that could offset the viscosity > > problem. More and more places are following the French and specifying > > biodiesel as a lubrication additive in LS diesel fuel. If it had > > better lubricity you'd need to use less, and the high viscosity > > wouldn't matter at such a low percentage. Which is where I grind to a > > halt because the difference between lubricity and viscosity isn't > > that clear, or at least not to me, especially when you add high > > temperatures. Anyone know better? > > > > Best > > > > Keith > > > > <snip> _______________________________________________ Biofuel mailing list Biofuel@sustainablelists.org http://sustainablelists.org/mailman/listinfo/biofuel_sustainablelists.org Biofuel at Journey to Forever: http://journeytoforever.org/biofuel.html Search the combined Biofuel and Biofuels-biz list archives (50,000 messages): http://www.mail-archive.com/biofuel@sustainablelists.org/
