Right: I found out my filtering also removed a foamy white stuff, leaving the BD clear.
----- Original Message ----- From: "Paul Gobert" <[EMAIL PROTECTED]> To: <biofuel@yahoogroups.com> Sent: Saturday, April 27, 2002 7:46 PM Subject: Re: [biofuel] murky > > ----- Original Message ----- > From: "Christian" <[EMAIL PROTECTED]> > [snip] > > >Anyway, I don«t > > quite understand how filtering removes cloudiness that comes from liquid > > particles (either water or glycerides). > > Christian, the material that my filtration removes is more of a white soapy > mature than water or glycerides. It looks much the same colour as clean > white tallow but it is more uniform in consistency and does not set at room > temp. > > >My reaction times were, I admit it, > > perhaps too short. I mixed four independent 1 liter batches, and they were > > each left to react for about 30 to 40 minutes. The reaction "seemed" > > complete after 10 minutes or so, and I thought 30-40 min would do. > > In light of what Todd and others have reported I have extended my mixing > times. > This may improve the clarity of the BD but I think my use of conc aqueous > NaOH is a contributing factor. > Strangely enough results from a test using varying levels of NaOH, with a > fixed level of methanol on the same feedstock, gave clearer unwashed BD for > higher levels of NaOH than optimum (titration) or low levels. Viscosity and > SG were also lower for high levels of NaOH. These tests bear repeating as > the mixing was of short duration. I suspect that optimum mixing would level > out the differences. > > Regards, > Paul Gobert. > > > --- > Outgoing mail is certified Virus Free. > Checked by AVG anti-virus system (http://www.grisoft.com). > Version: 6.0.351 / Virus Database: 197 - Release Date: 19/04/02 > > > > Biofuel at Journey to Forever: > http://journeytoforever.org/biofuel.html > Please do NOT send "unsubscribe" messages to the list address. > To unsubscribe, send an email to: > [EMAIL PROTECTED] > > Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/ > > > ______________________________________________________________________________ mensaje enviado desde http://www.iespana.es emails (pop)-paginas web (espacio ilimitado)-agenda-favoritos (bookmarks)-foros -Chat ------------------------ Yahoo! Groups Sponsor ---------------------~--> Buy Stock for $4 and no minimums. FREE Money 2002. http://us.click.yahoo.com/k6cvND/n97DAA/ySSFAA/FGYolB/TM ---------------------------------------------------------------------~-> Biofuel at Journey to Forever: http://journeytoforever.org/biofuel.html Please do NOT send "unsubscribe" messages to the list address. To unsubscribe, send an email to: [EMAIL PROTECTED] Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/
