Ken is this because it has a high total alkalinity? Say like we get in a swimming pool as the total alkalinity goes up it is harder to change the Ph?
Jim Ken Provost wrote: >On May 15, 2006, at 1:42 PM, Thomas Kelly wrote: > > > > > >>Do we simply have to neutralize the mix or do we >>have to achieve a particular pH? >>I suspect that many people do not split the mix >>because it's a bit confusing or sounds difficult. >> >> > > >The FFA-soap system is a "buffer", which means >that the combination of ingredients tends to resist >a change in its pH. As you add acid, the pH doesn't >change much -- you add more, it's still pH 10. You >add more, now it's pH 9.5. A little more, suddenly >it's pH 4 and the FFA is floating to the top. > >Typically, you'll tend to overshoot with the acid before >you get a good FFA split. Once you remove the FFA >from off the top, the aqueous phase below loses its >buffering properties, and you can bring it back to >neutrality in a straightforward (linear) fashion with >ammonia or some such base. Confusing? Naah :-) > >-K > > > > > >_______________________________________________ >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/ > > > _______________________________________________ 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/
