Hello Jim, the sensible thing is to spending time and money producing BD from a cheap feedstock, not the other way around. Acid esterifications are often incomplete, and I assume that oils and fats with max 20% FFA are worth while bothering about, unless you are willing to do several acid esterification steps and draining off the produced water after each step.But in order to have a good conversion into BD, you finally have to run the alkaline transesterification step , also for neutralization. Good luck to you ! Jan Warnqvist AGERATEC AB
[EMAIL PROTECTED] + 46 554 201 89 +46 70 499 38 45 ----- Original Message ----- From: "JJJN" <[EMAIL PROTECTED]> To: <Biofuel@sustainablelists.org> Sent: Saturday, January 07, 2006 3:26 AM Subject: Re: [Biofuel] Acid - Base questions > Thanks Jan, > If I had developed a method to separate FFA's from base stock without > using chemicals or water say in the range of 95% separation in WVO > (still a work in progress but hopeful results) so that I could React the > Low FFA's in a Base method then would it be feasible to react the High > FFA's In a separate Acid reaction? Or what problems would I encounter > like the water problem you noted below? Would the FFA's be worth the > trouble? > > Thanks Jim > > Jan Warnqvist wrote: > > >Hello Jim, > >when using the acid esterification, you will have methyl esters, unreacted > >oil, sulphate ions, oxonium ions and - water. > >Proceeding to the base step you will create more methyl esters, potassium or > >sodium soaps, maybe a little unreacted oil or partially reacted oil, > >potassium or sodium sulphates and - even more water. > >This method works fine if the water content can be kept on a reasonable > >level. Please note that the higher the initial FFA level, the more water > >will be produced. > >With best regards > >Jan > >Jan Warnqvist > >AGERATEC AB > > > >[EMAIL PROTECTED] > > > >+ 46 554 201 89 > >+46 70 499 38 45 > >----- Original Message ----- > >From: "JJJN" <[EMAIL PROTECTED]> > >To: "BIO" <Biofuel@sustainablelists.org> > >Sent: Thursday, January 05, 2006 3:01 AM > >Subject: [Biofuel] Acid - Base questions > > > > > > > > > >>I have decided to try the acid/base method in small test batches as I > >>have some High FFA (4ml) oil I would like to process. Since September I > >>have gone to great lengths to get repeatability and accuracy in all my > >>work with Biodiesel. I have read and re-read JtF and I know that I will > >>no doubt read it several more times if I get stumped. I would like to > >>start with fully understanding the process first. > >>Before I start: > >>Can you use KOH with the Acid Base method? It might be obvious, but I > >>did not see it in the recipe as a substitution. > >> > >>When the acid gets done with Estrification properly then the mix that is > >>left is basically an oil (triglycerides) , Methanol, and Sulfur ions ? > >>Or did I miss something? > >> > >>When the Methoxil is added the Sulfur gets combined with the Sodium > >>ions, (right?) how does this affect the reaction? > >> > >>Any good experienced information would be helpful, > >> > >>Jim > >> > >>_______________________________________________ > >>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/ > > > > > > > > > > _______________________________________________ > 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/
