I agree with you Todd. All chemical reactions of this kind carries a number of side reactions, but the amount or appetence of the glycerol cocktail cannot be used for judging the success of the transesterification(unless it is < 10% by mass), but a determination of the content of the glycerol cocktail might give a clue. Jan Jan Warnqvist AGERATEC AB
[EMAIL PROTECTED] + 46 554 201 89 +46 70 499 38 45 ----- Original Message ----- From: "Appal Energy" <[EMAIL PROTECTED]> To: <[EMAIL PROTECTED]> Sent: Wednesday, March 30, 2005 4:55 PM Subject: @SPAM+++++++++ Re: [Biofuel] liquid glycerine > Jan & Paul, > > > It seems to me that you produced some soap that time. > > All base processing creates soap. > > What everyone keeps referring to as "glycerine" settling out of a > transesterification (base) reaction is for the most part soap, diluted with > methanol and glycerol. > > The volume of glycerol per liter of oil processed is ~7.9% (~79 mililiters). > The excess alcohol present in this layer (glycerin cocktail) is ~65ml when > initially using 200 ml per liter. The balance is soap. > > Different oil and fat feedstocks produce different types of soap. If your > feestock was primarily soybean oil on Monday but coconut oil on Tuesday, the > latter would in general yield a more solid glyc cocktail. If the feedstocks > were soybean oil on both days but Tuesday's was extremely degraded (high > FFA) then the latter would yield a harder glyc cocktail. If the feedstock on > Monday had less animal fat in it than that on Tuesday the latter would > generally yield a harder or more viscous glyc cocktail. > > The same happens when using different catalysts. In soap making sodium > hydroxide (lye) is used to produce bar soaps (hard) and potassium hydroxide > is used to produce liquid soaps (solid like thick bread dough but more > soluble). When using potassium hydroxide the glyc cocktail generally never > thickens beyond that of maple syrup. > > Hardened or thinned glyc cocktails don't necessarily indicate "mistakes" or > "correctness" in processing. > > Todd Swearingen > > ----- Original Message ----- > From: "Jan Warnqvist" <[EMAIL PROTECTED]> > To: <[EMAIL PROTECTED]> > Sent: Wednesday, March 30, 2005 3:01 AM > Subject: Re: [Biofuel] liquid glycerine > > > > Hello Paul. > > It seems to me that you produced some soap that time. Did you measure the > > FFA content before starting ? > > Best regards > > Jan Warnqvist > > AGERATEC AB > > > > [EMAIL PROTECTED] > > > > + 46 554 201 89 > > +46 70 499 38 45 > > ----- Original Message ----- > > From: "Paul Tanner" <[EMAIL PROTECTED]> > > To: <[EMAIL PROTECTED]> > > Sent: Wednesday, March 30, 2005 1:00 AM > > Subject: [Biofuel] liquid glycerine > > > > > >> > >> > >> > >> > >> Hi, > >> > >> I've been making Biodiesel (BD) for a few months, now.. using the Mike > >> Pelly method.. and a curious thing happened with the last batch (my > > batches > >> are in approx. 160 - 180 litres).. the glycerine was liquid after the > >> reaction. This is the first time this has occurred for me, all other > >> times > >> the glycerine formed and settle in my tank, and was solid at low > >> temperatures. > >> > >> I had measured accurately, the quantities of methanol, caustic soda and > >> volume of oil...( I had an interested observer, who can testify if > >> required!! :-) ) I watched the colour of the mixture change, as I was > >> agitating, from a light caramel colour to a dark molasses colour... then > >> observed the glycerine start to settle, as expected. At this time the > >> glycerine was quite warm, so was still liquid, however, I let the mixture > >> settle for a 2 week period and the glycerine has not set firm. maybe I > >> should not complain.. 'cos it was easy to drain out of the tank! :-) > >> > >> Did the reaction not go far enough? Any further ideas on what has > >> happened?? > >> > >> regards, > >> > >> Paul. > >> ------------------------------------------- > >> Paul Tanner > >> Software IT Architect > >> Melbourne, Australia > >> > >> _______________________________________________ > >> Biofuel mailing list > >> [EMAIL PROTECTED] > >> http://wwia.org/mailman/listinfo/biofuel > >> > >> Biofuel at Journey to Forever: > >> http://journeytoforever.org/biofuel.html > >> > >> Biofuel archives at Infoarchive.net (searchable): > >> http://infoarchive.net/sgroup/biofuel/ > >> > > > > _______________________________________________ > > Biofuel mailing list > > [EMAIL PROTECTED] > > http://wwia.org/mailman/listinfo/biofuel > > > > Biofuel at Journey to Forever: > > http://journeytoforever.org/biofuel.html > > > > Biofuel archives at Infoarchive.net (searchable): > > http://infoarchive.net/sgroup/biofuel/ > > > > > > > > -- > > No virus found in this incoming message. > > Checked by AVG Anti-Virus. > > Version: 7.0.308 / Virus Database: 266.8.4 - Release Date: 3/27/2005 > > > > > > _______________________________________________ > Biofuel mailing list > [EMAIL PROTECTED] > http://wwia.org/mailman/listinfo/biofuel > > Biofuel at Journey to Forever: > http://journeytoforever.org/biofuel.html > > Biofuel archives at Infoarchive.net (searchable): > http://infoarchive.net/sgroup/biofuel/ > _______________________________________________ Biofuel mailing list [EMAIL PROTECTED] http://wwia.org/mailman/listinfo/biofuel Biofuel at Journey to Forever: http://journeytoforever.org/biofuel.html Biofuel archives at Infoarchive.net (searchable): http://infoarchive.net/sgroup/biofuel/
